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



black legs, and the black and ochreous general coloration, 

 the ochreous colour sometimes confined to the basal half 

 of the elytra and a portion of the under surface (the apical 

 half of the abdomen being always black) and sometimes 

 extending to the prothorax and to near the apex of the 

 elytra. The aedeagus has been dissected in the two males 

 available, and it exhibits a remarkable development of 

 both the lateral lobes. 



35. Chauliognatlms dispar, n. sp. 

 Callianthia dispar, Sturm in litt. {^). 



<^. Head, antennae, prothorax, scutellum and legs black, the 

 head with some markings in front, and the prothoracic margins 

 narrowly (completely or incompletely) yellow, the femora some- 

 times testaceous at the base ; the elytra varying in colour from 

 piceous to obscure testaceous, often with an oblique testaceous 

 streak extending from the humeri downwards, the sutural and 

 outer margins and scutellum rarely flavous ; beneath in great part 

 ochreous ; thickly clothed with fine cinereous pubescence, the pro- 

 thorax shining and more sparsely pubescent. Head large, broad, 

 subtriangular, the eyes not prominent; antennae long, filiform, 

 joint 3 much shorter than 4. Prothorax rounded-subquadrate, 

 bicallose on the middle of the disc, and with a short deep oblong 

 groove in the centre. Elytra much wider than the prothorax, 

 strongly subulate. 



$. Head shorter, sometimes wholly testaceous anteriorly, the 

 antennae less elongate; prothorax rufo-testaceous, margined on 

 all sides with yellow, transverse, rounded at the sides; elytra 

 varying in colour from black to fusco-testaceous, usually with a 

 long, oblique, conspicuous, testaceous streak extending downwards 

 from the shoulder, the sutural and outer margins sometimes flaves- 

 cent ; femora sometimes wholly testaceous ; ventral segments often 

 broadly nigro-fasciate. 



(^. Aedeagus: median lobe obliquely bent; left lateral lobe 

 moderately long, sinuate, subangulate near the base, hooked at the 

 tip ; right lateral lobe a little shorter than the left, somewhat 

 acuminate at the apex. Plate VIII, figs. 38, 38a. 



Length (excl. head) 7-9 mm. (cj ?.) 



Hah. Mexico {Truqui, in Mus. Brit. ; ex coll. Sturm), 

 Chilpancingo in Guerrero {Hoge, H. H. Smith), Tonila in 

 Colima {Hoge), Cuernavaca in Morelos [Hoge; Mus. 



Oxon.). 



