172 Mr. H. W. Bates's additions to the 



Elytroleptus scabricollis, n. sp. (PL VII., fig. 7). 

 E. palUdo (Thorns.) brevior, elytris parum et gradatim dilatatis, 

 apice acuminatim rotuiulato margineque sat longe fimbriate ; 

 subcyaneo-niger, dense erecte pilosus, partibus oris, vertice pedibus- 

 que auticis fulvo-rufis, elytris plus quam dimidio basali fulvo-flavis. 

 Thorax ovatus, grossissime confluenter punctatus callisque tribus 

 laavibus, Scutellum nigrum. Elytra utrinque tricostata, postice 

 abbreviata, interstitiis dense punctatis. Antennae corporis dimi- 

 dium attingentes, articulis 5 — 11 valde serratis, 11 appendiculo 

 parvo couico. Long. 10 millim. 



Hah. Mexico, Iguala in Guerrero (Iloge). Two 

 examples. 



CriojJrosopus gaumeri, n. sp. 

 C. basileo (Bates) proxime affinis ; differt (<?) thorace latiori, 

 lateribusque rotundatis ant minime angulatis nee sublobato-pro- 

 ductis, antennis corpore longioribus femoribusque apice nigris ; J 

 thorace mfo, disco nigro bimaculato. ^. Capite et thorax cas- 

 taneo-fusci, hoc dense punctato, vitta dorsali antice tricuspidata 

 laevi aut sublievi foveisque lateralibus ; elytris splendidissime 

 viridi-auratis, interdum partim fulvo-translucentibus, subtiliter et 

 Bparsissime punctulatis. Subtus cum pedibus rufus, femoribus 

 ad apicem (plerumque cum tibiis et tarsis) nigris. Mesosternum 

 antice planum declive, postice convexum. 5 • C. basileo simillima, 

 differt tantum elytris brevioribus splendidioribusque, et thoracis 

 (aurantiaco-rufi) margine anterior! maculisque duabus discoidali- 

 bus nigris. Long. 34 — 38 millim., ^ ? . 



Hah. Mexico, Temax in North Yucatan (Gaumer). 



This beautiful species is probably not more than an 

 imperfectly segregated local form of C basileus, which is 

 also found in Yucatan (at Merida) ; for the chief struc- 

 tural character, the rounded sides of the thorax, is not 

 constant, some examples being slightly angulated, though 

 not nearly approaching the distinctly lobed form of 

 C. hasileiis. The antennae in the 3' are decidedly longer, 

 passing the apex of the elytra to the length of the two 

 terminal joints. The differences in colour and punctua- 

 tion in both sexes, added to the characters just men- 

 tioned, will justify the separate naming of the two forms. 



The following seems to be a colour variety of either 

 C. basileus or C. gaiuncri : — 



