18 ADEPHAGA. 
middle; and the clypeal margin is fine. The species is apparently closely allied to 
D. levis, Sharp, but is more than twice the size, and the upper surface is not so 
completely impunctate. I have seen but a single individual, which, from the form of 
the prosternal process, I consider to be a female. 
5. Desmopachria bryanstoni. 
Hydroporus bryanstonii, Clk. Ann. & Mag. Nat. Hist. ser. 3, x. p. 175°. 
Hab. Mexico! (Truqut). | 
Clark’s description indicates a species distinct from any known to me. I formerly 
identified specimens from Bahia as being this species; but in this I see I was wrong, 
for Clark describes his species as being black beneath, whereas the Brazilian individuals 
are entirely pale beneath. Under these circumstances a fresh name must be given to 
the species described by me (Trans. Roy. Dubl. Soc. n. s. ii. p. 342. no. 238) under 
the name of Hydroporus bryanstont; and I will take this opportunity of naming it 
D. mutata. 
6. Desmopachria circularis. 
Brevis, lata, subrotundata, pernitida, testacea, supra subglabra, elytris tantum obsolete punctulatis, versus 
latera omnino levigata. 
Long. 2, lat. % lin. 
Hab. GUATEMALA, Guatemala city, San Gerénimo (Champion). 
Var. Paulo minor, supra vix adeo obsolete punctulata. 
Long. 3, lat. 4 lin. 
Hab. Mexico, Vera Cruz (Sallé). 
This species is extremely similar to D. /evis, Sharp, but has the under surface pale, 
not black, and the upper surface is not so completely destitute of punctuation. The 
under surface at first sight appears smooth; but on careful examination a very few 
distant and obsolete punctures may be detected on the coxe. The elytra show a more 
or less distinct series of punctures along the middle on the basal portion. 
The variety from Mexico may possibly prove to be a distinct species; but as it 
approaches very closely to the Guatemalan specimens, and these vary a little énter se, 
it would be premature to treat the only individual I have seen as sufficient evidence of 
specific division. | 
The prosternal process is extremely minute, and, I think, presents but one form in 
the four individuals before me. 
7. Desmopachria glabricula. 
Brevis, lata, rotundata, convexa, pernitida, testacea, tere levigata, elytris vix perspicue punctatis. 
Long. 2, lat. vix 3 lin. 
Hah. GuaTEMALA, Paso Antonio, 400 feet (Champion). 
