150 Mr. G. C. Champion's Revision of the 



rarely, ochreous ; apices of the femora, the anterior and intermediate 

 tibiae in great part, and the base of the posterior tibiae, testaceous. 



Chauliognathus scapularis, Gorh., loc. cit. p. 77 ($). 



Hab. Mexico {ex coll. Sturm ; Truqui), Zapotlan in 

 Colima, Chilpancingo in Guerrero {Hoge). 



(J. Aedeagus : median lobe long, obliquely bent ; left lateral 

 lobe long, broad and concave to about the middle, and then abruptly 

 narrowed and arcuately bowed to the tip (the apical portion varying 

 in length and breadth in the ten specimens dissected), the tip more 

 or less hooked ; right lateral lobe much shorter than the left, com- 

 pressed, obliquely bent. Plate VI, figs. 22, 22a. 



An abundant insect in Mexico and varying greatly in 

 colour, C. liynhicollis itself being probably yet another form 

 of C pennsylvanicus, De Geer ; but amongst the very large 

 number of specimens before me there are none from 

 Mexico or Guatemala with the elytra marked as in typical 

 examples of the latter, i. e. with an oblong subapical black 

 spot or vitta on the disc. C. sca'pidaris has been received 

 from the same locahties (Zapotlan and Chilpancingo) as 

 C. limhicollis (the latter sometimes having the knees broadly 

 testaceous), and cannot be separated from it. The variety 

 a, with wholly black prothorax, is represented by a series 

 of nine specimens from Morelia. Leconte's type of C. limhi- 

 collis has a triangular scutellar patch and the apex of the 

 elytra broadly black (this form being not uncommon at 

 Orizaba), the dark markings being usually broadly coalescent 

 along the suture in the Central American material examined. 

 The aedeagus varies in the development of the curved 

 apical portion of the longer lobe, but the general structure 

 is similar. The antennae of the male are very long, dis- 

 tinctly widened outwards, with the apical joint a Uttle 

 narrower than the preceding ; but in one Mexican example 

 of this sex (apparently belonging to the same species) 

 they are slender throughout. 



19. Chauliognathus mundus, n. sp. 

 Chauliognathus scutellaris, Gorh., Biol. Centr.-Am., Coleopt. 



iii, 2, p. 283 (wee Lee.) (the Mexican examples from the 



Salle collection only). 

 Chauliognathus mundus, Chevr. in litt. 



Opaque, black; the prothorax rufo-testaceous, sometimes with 

 a transverse or M -shaped black mark on the disc; the elytra ochre- 



