172 SUPPLEMENT. 



2. Hippomelas sphenicus. 



Buprestis sphenicus, Leconte, Proc. Ac. Phil. 1854, p. 83 1 , & 1858, p. 67. 

 Gyascutus sphenicus, Leconte, Trans. Am. Phil. Soc. xi. p. 190 (1860). 



Hab. North Amekica, Texas (Schott ^.—Mexico, Monclova in Coahuila (Dr. Palmer), 

 Alamos (Buchan- Hepburn), Villa Lerdo in Durango (Hoge). 



This species is so very close to the blue form of H. saginatus that it might easily be 

 mistaken for it. It differs in having the thorax less narrowed in front, with the sides 

 much more rounded, and the posterior angles not or scarcely diverging. The elytra 

 have a conspicuous yellow border at the base, and the abdomen has a row of greyish- 

 yellow pubescent spots at the sides. 



Some of the specimens are of a brassy-black above. 



PSILOPTERA (p. 8). 

 Psiloptera polymita (p. 8). 



To the locality given, add : — Jalapa, Actopan (Hoge), Acaguizotla in Guerrero 3500 

 feet(HH. Smith). 



1 (a). Psiloptera obscura. 



Lampetis obscura, Thorns. Typi Bupr., Append, p. 11 l . 

 Hab. Mexico 1 , Yolos, Oaxaca (Salle). 



l (b). Psiloptera severissima. 



Lampetis severissima, Thorns. Typi Bupr., Append, p. 11 '. 

 Hab. Mexico 1 . 



I have not seen an example of this species. 



l (c). Psiloptera geniculate 



Elongata, elliptica, crassa, fusco-cuprea, nitida ; capite nitido, grosse punctate ; thorace transverso, ante medium 

 oblique angustato, parce grosse punctato, lateribus postice fere parallelis ; elytris sat parallelis ad apicem 

 gradatim acuminatis, fortiter striato-punctatis, interstitiis alternatim plagis parvis rugosis interruptis ; 

 femoribus cupreis apice viridi- et purpureo-tinctis, tibiis cyaneis, tarsis viridibus. 



Long. 6|-lli lin. 



Hab. Mexico, Temax in North Yucatan (Gaumer). 



Closely allied to P. polymita, but a little broader and less convex, with the thorax 

 more angulated at the sides. The head is much less closely punctured and more 

 shining, the punctures larger, leaving smooth raised intervals ; with a line of pubes- 

 cence bordering the eye. The thorax has the punctures large and deep and much less 

 numerous, and not crowded towards the sides except at the extreme lateral margin and 

 at a spot behind each eye. The elytra are punctured in lines, the punctures large and 



