86 ENTOMOLOGICAL NEWS. [Mar., '06 Descriptions of New Genera and Species of the Or-thopterous Tribe Tettigidae. BY DR. JOSEPH L,. HANCOCK, F. E. S. (London). During the preparation of an article on " Tettigidse" for Wytsman's " Genera Insectorum," I have taken the oc-casion to review a large number of specimens of this group, with the result that I have met with a number of new genera and species. I have deemed it expedient to describe some of these here, in advance of the publication of the article above referred to. The most interesting species in the series is Am-phibotettix longipes. It is to be regretted that no actual observa-tions of their habits have been made, yet there is hardly any doubt, that this species is fond of living in the water, similar to Scelhymena* This fact is evidenced by the extraordinary dilatation of the lateral margins of both the tibiae, and the metatarsi of the hind legs. SECTION SCELHYMEN^:. AMPHIBOTETTIX gen. nov. Characters : Allied to Scelhymena. Body granose, indis-tinctly nodulose, barely fossulate. Vertex short, small, strongly narrower than one of the eyes, middle feebly cariuate, the frontal carinse moderately distinct, narrowly convergent forward, formed anteriorly into a nearly hemispherical margin, not advanced so far as the eyes. Face oblique ; frontal costa narrowly sulcate, lightly produced. Eyes globose ; ocelli con-spicuous and placed between and little before the lower third of the eyes. Antennae very slender, reaching the humeral angles, filiform, consisting of fourteen distinct articles, in-serted barely between or just before the ventro-anterior margin of the eyes. Pronotum anteriorly truncate, or little ascendant, produced in a short cylindrical spine, directed upward and for-ward above the occiput, posteriorly lengthily extended back-ward beyond the femoral apices and acute, dorsum distinctly flattened, humeral angles strongly obtuse, often with indis-tinct humero-apical carinae ; median carina of pronotum lightly *Thc correct spelling of Srrlitnena Servillc, is undoubtedly Sct'lliyim-na, as jfivcn by Bolivar, vide Ann. Soc. Ent., France, LXX, p. 581, 1901.