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



cJ. Antennae with joint 1 strongly curved, sinuously hollowed 

 externally, much widened outwards, and angulate at the outer 

 apical angle; 2 bluntly dilated at about the middle externally, 

 and with a rather stout, long appendage. 



Hah. North America, Arizona, Texas; Mexico 

 (Truqui), Durango, Morelos, Vera Cruz, and Oaxaca. 



The typical form of this species has the antennae and 

 legs wholly testaceous; but if the shape of the basal joint 

 of the male-antenna is to be reUed upon, C. blandus will 

 have to include examples with joints 3-10 of the antennae, 

 and the legs, black. A short series from Misantla, Vera 

 Cruz, includes all these forms, as well as C. histrionicus with 

 rufo-testaceous femora, showing that the colour of the 

 legs and antennae is variable in both insects. The type 

 of C. blandus, Er., was from Mexico, that of C. pulchellus, 

 Horn, from Arizona. The male of the alhed C. femoratus, 

 SchaefE., has the head wholly black and densely punctate, 

 the femora red, the first antennal joint moderately widened 

 outwards and rounded at the tip, and the second joint 

 shaped very much as in C. histrionicus, but with a shorter 

 and more slender appendage. 



19. Collops histrionicus, n. sp. (Plate II, figs. 5, 5a, 

 basal joints of ^-antenna.) 



Collops histrio, Gorh., Biol. Centr.-Am., Coleopt. iii, 2, 

 pp. 114, 315 (part.) {nee Erichson, Horn, Fall). 



Moderately elongate, the head and prothorax shining, the elytra 

 dull; head violaceous or greenish, rufous or testaceous in front in 

 cJ, more narrowly so in $, the palpi and antennae black, the two 

 basal joints of the latter in great part testaceous, the basal joint 

 sometimes immaculate; prothorax rufo-testaceous, immaculate; 

 elytra rufo-testaceous, each with a large basal spot (reaching the 

 suture and outer margin) and a still larger subapical one (reaching 

 the outer margin) blue or bluish-green; legs black, the femora 

 rarely (one specimen from Misantla), and the anterior trochanters 

 frequently, testaceous ; abdomen rufescent, the rest of the under 

 surface in great part black ; clothed with fine cinereous pubescence 

 intermixed with an abundance of long, erect, blackish, bristly 

 hairs. Head closely, minutely, uniformlj'^ punctate. Prothorax 

 transverse, convex, very sparsely, minutely punctulate. Elytra 

 densely, moderately coarsely punctate. 



(J. Antennae with joint 1 strongly curved, moderately widened 



