20 Mr. G. C. Champion's Revision of the Mexican 



1. CoUops grandis, n. sp. 



$. Broad, black, the olytra wholly blue or bluish-green, the head 

 nigro-caeruleous, the labrum and clypeus, the bases of the mandibles 

 and palpi, the first joint of the antennae, and the outer edge of the 

 next two or throe joints, the abdomen, femora, and coxae (the outer 

 edge of the middle pair sometimes infuscate), rufo-testaceous ; 

 clothed witli fine cinereous pubescence intermixed with long, erect, 

 black, bristly hairs. Head broad, very densely, finely punctate 

 throughout, the dark colour extending to the anterior margin ; anten- 

 nae witli joints 1 and 2 subequal in length, 3-10 moderately serrate. 

 Prothorax strongly transverse, shining, sparsely, minutely punctate. 

 Elytra very densely, finely punctured. 



Length 7-7^, breadth 4 mm. 



Hab. Mexico, Santa Clara in Chihuahua and Chihuahua 

 city (Hoge). 



Four females. This insect is a little larger than the 

 largest examples of the same sex of C. bipunctatus, from all 

 the varieties of which it may be distinguished by the wholly 

 bluish-black head, the immaculate, smoother prothorax, 

 the pallid femora and coxae, and the relatively longer 

 second antennal joint. 



2. CoUops bipunctatus. 



Malachius bipunctatus, Say, Journ. Acad. Phil, iii, p. 185; 



Amer. Ent. iii, and Complete Writings, i, p. 107, t. 48, 



fig. 5. 

 CoUops bipunctatus, Er., Entomographien, p. 55; Horn, 



Trans. Am. Ent. Soc. iii, pp. 80, 82 ; Gorh., Biol. Centr.- 



Am., Coleopt. iii, 2, pp. 113, 313; Fall, Journ. N. York 



Ent. Soc. XX, pp. 252, 263. 

 Malachius xanthostomus, Chevr., in Dej. Cat. 



(J. Antennae with joint 1 very broad, subtriangular, hollowed 

 above, convex beneath, the curved appendage on joint 2 long. 

 Additional locahties for this species, are : — 

 Mexico {Mus. Brit., Truqui ; Coffin, in Mus. Oxon.), 

 Durango city, Mexico city, Irapuato, Jalapa (Hoge), 

 Orizaba, Puebla {Salle), Amecameca {Mus. Oxon.). 



A large form, with the head (a deep triangular excision 

 in the middle in front and the anterior margin excepted) 

 and elytra blue or (rarely) green, the prothorax rufo- 

 testaceous, with two black spots of variable size on the 

 disc ; the elytra somewhat scabrous. The entire antennae, 

 the sides of the head in front of the eyes, and the tarsi are 



