On the 'Challenger' Amphkpoda. Epicrionops bicolor, sp. n. Teeth small; both rows of mandibular teeth well developed. Snout rounded, scarcely prominent; the width of the head between the eyes does not quite equal the distance of the eye from the end of the snout. Body subcylindrical, slightly de-pressed, with 245 very distinct, complete circular folds. Anal opening longitudinal, elongate. Tail pointed, compressed, as long as the head. Dark brown ; a broad yellow band along each side of the belly, nearly as broad as the interspace, com-mencing from the mouth, uniting in front of the vent, and occupying the lower half of the tail. Total length 225 millim., greatest diameter of body 9 millim. In general physiognomy and colour, this highly inter-esting form resembles Ichtlhyophis glutinosus of the East Indics, from which it is generically distinguished by the structure of the tentacle and the well separated squamosal and parietal bones. It is remarkable in the retention of several of the larval characters of Ichthyophis, viz. the position of the tentacle, the elongate anal clett, and the relatively long and compressed tail. One specimen was collected by Mr. Buckley at Intae, Ecuador. XXX.-The 'Challenger ' Amphipoda. By the Rev. THOMAS R. R. STEBBING. THE following preliminary descriptions are published "by permission." The work of arranging, describing, and figuring the whole group is likely to take some time. In the mean-while it may be of interest to students of this branch of natural history to have a brief account of some of the more striking forms that have been discovered. The details now given are intended to afford some notion of the external ap-pearance of the specimens, and to distinguish them from their congeners previously known. There are naturally many points of interest which do not corne within the limited scopeof this intention. These are reserved for publication in thecompleted work. In the nomenclature here used the classifi-cation of A. Boeck has been followed. Family Gammarids. Subfamily EDICErINS. Acanthostepheia ornata, n. sp. The rostrum is produced beyond the first joint of the upper 14*203
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