KHOICUS.— EHINOTMETUS. 455 



3. Rhoicus rogersi. 



Testaceous ; antenna nearly as long as the body, fulvous ; head and thorax finely and closely punctured ; elytra 

 very finely punctate-striate, clothed with short yellow pubescence ; sides of the abdomen black. 



Length 2| lines. 



Head longer than broad, the vertex extremely finely punctured ; the space between the eyes furnished with a 

 highly raised transverse ridge which limits the frontal tubercles behind ; palpi filiform ; antennae more 

 than two thirds the length of the body, rather robust, the third and fourth joints of equal length, the fifth 

 joint longer; thorax distinctly longer than broad, the sides angulate before the middle, the disc extremely 

 finely and closely punctured, obsoletely and longitudinally depressed at the middle, the surface sparingly 

 clothed with yellow pubescence; elytra finely punctate-striate, densely clothed with short yellowish hairs; 

 posterior tibiae curved, their apices armed with a single spur ; claws appendiculate. 



Eab. Costa Rica, Rio Sucio (Rogers). 



The single specimen before me is of smaller size than most of the other species placed 

 in this genus ; it is easily distinguished by the uniform testaceous colour, with the 

 exception of the sides of the abdomen, which are black and shining. 



RHINOTMETUS. 



Rhinotmetus, Clark, Cat. of Halticidse, p. 33 (1860). 



Rhinotmetus is perhaps one of the best characterized genera in the present group, on 

 account of the produced or elongate head, the more elongate and anteriorly denexed 

 thorax, and the bifid claws, in connection with the filiform palpi ; the shape of the 

 thorax especially gives it a different facies. Twenty species have been described by 

 Clark, all from different parts of Tropical South America; five are now recorded 

 from Central America. 



1. Khmotmetus depressus. 



Rhinotmetus depressus, Clark, Cat. of Halticidse, p. 43 ; Front, f. 5 (I860) 1 . 

 Eab. * Mexico (coW. Jacoby).— Brazil \ 



The only difference I can find between the specimens contained in my collection, 

 received as from Mexico, and the one in that of Mr. Baly, from Brazil, is the fulvous 

 colour of the thorax and legs in my specimen, instead of black as in that of Mr. Baly ; 

 I do not hesitate therefore to look upon it as a variety. Whether the locality " Mexico " 

 is correct I am unable to say, no other specimen from Central America having come 

 under my observation. 



2. Ehinotmetus flavovittatus. 



Dark fulvous, clothed with flavous pubescence; antennae black; head granulate-punctate; thorax thickly 

 clothed with bright yellow pubescence ; elytra narrowed behind, fuscous, fulvous at the sides, a narrow 

 obsolete sutural and lateral stripe on each, pale flavous. 



Length 2 lines. 



Head strongly produced anteriorly, this portion broadly flattened ; the vertex with a smooth central longitudinal 

 carination, closely granulate-punctate at the sides ; antennae half the length of the body, black, the fourth 



