178 Mr. G. C. Champion on the 



Hab. Falklands (Th. Havers, Col. A. M. Reid, C. J. C. 

 Fool), Port Stanley (R. Vallentin). 



Seven specimens. This is another species resembling the 

 insect from Port Famine figured by Blanchard under the 

 name Cylydrorhinus lineaius*, differing from it in the finely 

 punctate proMiorax, with the sides more strongly explanate 

 and biangulate, the much finer seriate punctures on the 

 elytra, and the sides, inferior margin, and suture only of the 

 latter (instead of the alternate interstices) albo-lineate. 

 C. tessellatus, Giier., from Port Famine and Punta Arenas, 

 is another allied form, with the margins of the prothorax less 

 angulate, and the seriate punctures on the elytra coarser and 

 less approximate, than in the present species. The type of 

 the genus Cylydrorhinus, C. lemniscatus, has the sides of the 

 prothorax rounded, and the lateral expansion cannot therefore 

 be used as a character by which to separate it from Listro- 

 deres, as lias been done by Lacordaire. According to a label 

 attached to the specimen of L. biangulatus received from 

 Mr. Rupert Vallentin in 1899, this insect is known in the 

 Falklands as the " Peat-beetle of tlje Malvinas." 



2(5. Listroderes bicaudatus, Enderlein. 



Hab. Falklands (W. E. Wright, Th. Havers, R. Val- 

 lentin, C. J. C. Pool), Port Stanley {Col. A. M. Reid), Port 

 Darwin, Goose Green (Enderlein). 



The fourteen examples of this species before me, including 

 one received by the Museum in 1842, show considerable 

 variation in the elytral markings, some of them having a 

 distinct sutural stripe, and a narrower line down the third 

 and fifth interstices, in addition to various scattered spots, of 

 greyish hair-like scales, such specimens nearly agreeing with 

 the figure of L. (C.) lemniscatus, one only being spotted and 

 non-lineate as shown in Enderlein's plate. The prothorax is 

 almost rounded at the sides in one example, subangulate in 

 others. The elytra are long, convex, oval, rather coarsely, 

 conspicuously, puuctato-striate, with the interstices 3 and 5 

 more or less raised and a little narrower than the others ; the 

 apices are produced into a stouter and blunter tooth in the ? 

 than in the J, as is often the case in this genus. The first 

 ventral segment is excavate down the middle in <$ . 



* lxeuanied C, co7ifuseanus by Berg in 1899. 



