NATURAL SCIENCES OP PHILADELPHIA. 221 nate. By this means, the question of groups having heen reduced to a few which are most closely coincident, doubts which cannot be dispelled by the best synopses, are either confirmed or dissipated at once. This subject I think eminently worthy M. Ghienee's consideration, and that of all systema-tists who may succeed him. I would beg him to think upon it in connection with his subsequent works, and at least tell students why he values less a solid and self-satisfying reputation, built on essential and successful impetus given to his favorite branch of study in all parts of the civilized world, than that ephemeral position of being the temporary authority for the little entomologi-cal world ; and if in addition to synopses of all bis groups, under the next most general in value, he would add to his works delineations of the dis-tinctive parts of structure in every genus, instead of colored representations of a few moths, his works would possess an enduring and permanent value, so long as entomology as a study engages the attention of the student of nature. Homiptera of the North Pacific Exploring Expedition under Com'rs Kodgers and Ringgold. BY P, R. UHLER. The Hemipterous insects, brought home by the Expedition, furnish several new and remarkable species, and much praise is due the indefatigable botanist of this Expedition, Mr. Charles Wright, for displaying such zeal in bringing together so many interesting objects. The insect fauna of many of the countries touched at, particularly that of Japan, being almost entirely unknown, renders every addition of species from those localities exceedingly desirable, and it would be matter of deep interest to have an opportunity of examining full series of them. Considering the importance of the species procured, it is much to be regretted that extensive facilities were not afforded for bringing together a general col-lection ; but, under the existence of contingent circumstances, this was not possible. The absence of any extensive collection of exotic Hemiplera in this country renders it impossible to decide with precision upon a few of the species here included ; but should they hereafter be found to have been previously charac-terized, the proper acknowledgments will be made. As there seems to be no settled opinion in the minds of Entomologists respecting certain groups, par-ticularly with such families as Halydce, Pentatomidce, Rliaphigastridce, &c, and still further on, with Mictidce, Nematopidce, Acanthocoridce, &c, and having met with a genus (Pachycephalus) which violates the characters of the families given, I thought it better to place the included species in two large groups (Pentatomoidea, Coreoidea), corresponding with the genera Pentatoma and Coreus, of Fabricius. SCUTELLERID-iE. Callidea, Burm. C. Stollii, Wolff, Icones Cimicum, 48, tab. 5, fig 45. Hong Kong. Eccorysses, Amyot et Serv. E. superbus 9-Deep orange ; head bluish-black, lateral lobes and the middle one at tip sanguineous, transversely wrinkled, rostrum and antenno black, pubescent, eyes and ocelli brownish ; thorax deep orange, obsoletely punctured, a lunulate, black depression just behind the head densely, coarsely punctured, exterior and anterior edges black, spot upon the disk, one upon each humerus, and a connecting band upon the basal margin also black ; be-hind each anterior angle is an oblong, rounded, shallow impression, blackish ; corium black, punctured ; wings dark-fuliginous ; scutellum finely punctured, with a band at base, an irregular one dilated and projecting medially forward. I860.]
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