36 Mr. F. P. Pascoe on some new or little-known 



oblong fovea; thighs moderately incrasBate; hinder tibiae below the 

 middle with a stoul -pine, the apex of which is suddenly bent back- 

 wards the inner surface clothed with long whitish hairs ; four anterior 

 tarsi with their basal joints dilated, ovate. 

 Hah. Ega, Upper Amazons. Collected by H. W. Bates, Esq. 



Genus Colasposoma, Laporte. 

 Colasposoma pretiosa. 



C. subquadrato-oblonga, convexa, nitida, metallico-cserulea ; antennis 

 tarsisque nigris; elytria irregulariter subcrebre punctato-striatis, utris- 

 que aureo-roseis, cseruleo anguste marginatis; femoribus subtus dente 

 parvo armatis, anticis incrassatis. — Long. ±\ lin. 



Subquadrate-oblong, convex, shining metallic blue ; antennas and 

 tarsi black ; elytra bright auro-rosaceous, with a slight violet tint, the 

 suture and outer limb narrowly edged with metallic blue. Head flat, 

 closely strigose-punctate, three small smooth spaces placed in a triangle 

 between the eyes metallic green ; front impressed with a longitudinal 

 groove, which terminates below at the central space. Thorax more than 

 twice broader than long ; sides rounded, slightly narrowed in front, 

 notched at their apex, anterior and posterior angles each armed with 

 a small obtuse tooth ; above very convex transversely, slightly convex 

 from base to apex, somewhat closely covered with deep punctures. 

 Scutellum metallic green, impressed at the base with several deep 

 punctures. Elytra scarcely broader than the thorax, about four times 

 its length ; sides parallel ; apex regularly rounded ; surface covered 

 with numerous distinctly impressed subaciculate punctures, irregularly 

 arranged in strife, interstices finely reticulate-strigose. Body beneath 

 deep metallic blue, with a faint green reflexion ; tarsi black ; all the 

 femora armed on their lower edge just beyond the middle with a small 

 acute tooth ; anterior pair of thighs incrassate. 



Hab. Northern India. 



V. — Notices of new or little-Tcnoivn Genera and Species of Coleoptera. 

 By Francis P. Pascoe, F.L.S., &c. 



Part I. 

 It is difficult to form any adequate idea of the number of new forms, 

 to say nothing of new species of insects, which exist in, or are being 

 constantly added to, our cabinets*. Many of these are almost hope- 



* Mr. S. Stevens has just favoured me with the sight of a collection of Coleo- 

 ptera (perhaps about a thousand species) made by Mr. Squire at Petropolis (a 

 sort of Brazilian Cintra, and a short day's journey from Rio), and although 

 the <list riot has been repeatedly worked, and Mr. Squire was there scarcely two 

 months, yet the result of his visit has been the discovery of a vast number of 

 novelties nnd some new. forms of a very interesting character. 



