410 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



however, differ from the males in that the anterior lobe of their pro- 

 notum is low and gently convex, not elevated and declivitous. 

 Specimens examined. — 2 males. 



United States: "Ala.?" (HMH). 



West Indies: "Tobago, 1-4, ii, 1931. Capt. A. K. Totton. B.M. 1931-183" 

 (BrM). 



Germs Ectinopus Dallas 



Edinopus Dallas, 1851, p. 121. 



Diagnosis. — The large, blackish membrane which occupies about 

 one-half of the hemelytral length permits read}^ recognition of this 

 genus. 



Description.- — Large (11.3-14.2), elongate-oval, greatest width 

 approximately at midlength; dorsum slightly convex, venter much 

 more strongly so; body surface dorsally and ventrally and corium 

 distinctly alutaceous. 



Head: Length more than half of width, flattened above; clypeus as 

 long as juga; latter with anterior margin nearly or quite semicircular, 

 not or vaguely reflected at edge, without submarginal row of seti- 

 gerous punctures; eyes large, entire, slightly projecting; ocelli well 

 developed, moderate in size, situated on a line connecting hind margins 

 of eyes, separated from eyes by about twice an ocellar width; with 

 two primary setigerous punctures, one near inner angle of eye, one 

 subapically on jugum (fig. 66); antennae 5-segmented, I shortest, V 

 usually longest; bucculae moderately high, reaching almost to base of 

 head; labium reaching between or slightly bey^ond middle coxae, IV 

 shortest, II longest, slightly compressed and without a foliaceous lobe, 

 III longer than I (fig. 22). 



Pronotum: Nearly twice as broad as long, narrowed anteriorly, side 

 margins carinate, slightly coarctate, with submarginal row of 5 to 7 

 setigerous punctures; transverse impression slightly postmedian, 

 weak or obsolete, variously punctured; front margin shallowly and 

 evenly concave; posterior margin slightly and broadly convex; all 

 angles rounded. 



Scuteilum: As wide as or slightly wider than long, strongly tri- 

 angular; apex narrowed, acute, sides flattened; disc more or less punc- 

 tured; width of apex about one-third of membranal suture. 



Hemelytron: Corial areas well defined; membranal suture straight, 

 lateral angle acutely prolonged; corium with rather uniform, scattered 

 punctures, these a little denser on exocorium; costal margin usually 

 with a single subbasal setigerous puncture; membrane about half the 

 hemelytral length, translucent brownish black. 



Propleuron: Depression moderately punctate; prosternal carinae 

 low, rounded; anterior margin of prosternum with a broad, short lobe 

 either side. 



