6 CATALOGUE OF 



femorihm apice teslacm tmigutlalis femoribus anluis suhtm tri- 

 denlalis ; al(e anticcB /alee, ex maxima parte coriacecc, villa basuli 

 brevi niyra apice fusca el diffusa, sulco anuli bene delerminato, casta 

 convexa ; posticcE obscure ciuerece, veiiis iestaveis. 



Male. — Testaceous. Head, pectus and legs black. Head with the 

 sockets of the antennre, the two intermediate spots, a band near the mouth, 

 and a spot on eauh side tesiaceous. Eyes as remote from each other as 

 those of B. gigaiilca. Mandibles partly ferru^iinous. Protliorax elliptical, 

 somewhat rounded in front, where it is slightly vaulted, not extending 

 beyond the head ; sides ronnded, hardly truncated along the humeri ; hind 

 border hardly rounded; the black spot with a Ijre-shaped mark, narrower 

 and rounded on the hind side, where it joins the hind border, with an angle 

 on each side and with three angles in front, where the middle angle is 

 much longer and more acute than the other two. Mesothorax with an 

 irre<'ular brown spot on each side. Metathorax with three large irregular 

 nearly connected lirown spots. Abdomen ferruginous above; under side 

 black, with a large testaceous patch near the base, and on each side hind- 

 ward with three tesiaceous spots which successively decrease in size. Cerci 

 blauk. Legs rather stout ; iemora with a testacenus apical dot; tarsi tes- 

 taceous beneath ; fore femura tridenlate beneath. Fore wings broad, 

 mostly coriaceous, with a black stripe which extends along the humeral 

 vein from the base to somewhat beyond one-fourth of the length, and is 

 brown and diffuse towards its tip; anal furrow strongly marked; cosla 

 rounded, especially towards the base. Hind wings dark cinereous, wiih a 

 tesiaceous tinge along the cosla; veins testaceous. Length of the body 

 25 lines ; of the wings 52 lines. 



The shorter wings distinguish this species from B. gigantea and from 

 B. Mexicana. lu the colour of the wings it differs mucli from B. Alropos 

 and from B. minor, and from B. Cubensis. It seems closely allied to 

 B. Brasiliana, but the hind border of ihe proihorax is very sli^'htly rounded 

 and not angular in the middle. The difference in the spot on the pro- 

 thorax is loo uncertain a cliaracter to be relied on. The hind wings are 

 dark cinereous with testaceous veins, and thus unlike those of B. Brasiliana. 

 The prothorax is not angular on each side as is that of B. Sulzerii, but 

 a'^rees in form with that of B.ferruginea, ho\\e\ev the latter species is 

 represented with a very differently shaped discoidal spot. It can hardly be 

 B. trupezoidea, of which the description is very slight. The colour suffi- 

 ciently distinguishes it from B.fralerna, B. Claraziana, B.fumigata and 

 B. dubia. 

 a. British Guiana. Presented by Sir R. Sehomburgck. 



15. Blabera nigripennis. 



Alas. Nigra, fere fusif or mis ; prothorax testaceus, plagis duabus posticis 



luleis ramosis, murgine antico rotundalo, laleribus dilatalis sub- 



angulaiis apiid humeros subtruncatis ; abdomen fuse urn, lamina sub- 



anali lobis duobus angulatis ; pedes breves, robusti, trochanteribus 



teslaceis; alee antica ex maxima parte coriucece ; poslicce nigricantes, 



poslice niyro.cinere(E. 



Male. Black, nearly fusiform. Head with the sockets of the antennae, 



two intermediate spots and a baud near the uiouth luleous. Eyes as far 



