126 MALACODERMATA. 
and of a different shape. It is curious that both species have occurred in Mexico, as 
well as in the district of Vera Paz. There are red-legged Listri described by Leconte ; 
but I think it hardly likely these will prove identical with either of them. From 
L. rotundicollis, Lec., the size alone separates the present insect. 
4, Listrus versicolor. 
Oblongus, parum depressus, niger, supra cupreo-nitens ; elytris subceruleis, minus crebre sat distincte punctatis, 
subparallelis, apice subgibbosis, Long. 3-34 millim. 
Hab. GuatEMALA, Ostuncalco (Champion). 
This is a parallel, slightly depressed species, with a broadish head and subquadrate 
thorax, of which the hind angles are broadly rounded. ‘The antenne and legs are 
entirely black. The head and thorax are more coppery and more pubescent than 
the elytra in my type, and in two or three other examples. The elytra are only a little 
depressed at their apex, and therefore only slightly of the form I have called “ gibbous,” 
by which I imply that the curvature, viewed laterally, suddenly changes at that point. 
Five specimens from one locality are attributable to this species. 
5. Listrus canescens. 
Listrus canescens, Mannerheim, Bull. Mosc. ii. p. 248'; Dej. Cat. 8rd ed. p.125” (Dasytes); Leconte, 
Class. Col. N. Am. i. p. 193. 
Hab. UnttEpD States, California !2—Mexico, Alvarez Mountains (Dr. Palmer), Guana- 
juato (Dugés, coll. Sallé); Guatema.a, Capetillo, Duefias, Quiche Mountains, Quezal- 
tenango, Guatemala city (Champion). 
The commonest, apparently, of the genus, and, if I am right in my identification, 
widely distributed over the Pacific region, and possibly extending far inland. I can 
see no difference between it and a specimen sent me by Mr. Belfrage, which was, I 
believe, from California. There was a very considerable series of this sent by Mr. 
Champion and Dr. Palmer. 
The whole genus seem to delight in districts of high elevation. 
6. Listrus punctatus. 
Oblongus, subparallelus, niger, supra eeneus nitidus parcius punctatus, parce pubescens; elytra prothorace vix 
latiora, apice rotundata. Long. 3 millim. 
Hab. Muxtco, Jalapa (Hoge); Guaremana, Santa Rosa, San Gerénimo, Zapote 
(Champion). 
On the average rather larger than L. canescens, and at once to be separated from it 
by its broader, more parallel, and bulkier form, by the coarser punctuation of the elytra 
especially, and by the very sparse depressed pubescence, which with a strong glass is 
easily resolved into separate hairs. 
