THE CANADIAN ENTOMOLOGIST. 39 



appears to be near 1.30 inch. The colour of the thorax is uniformly a 

 brilliant fiery copper, with green reflections when seen after night or in 

 certain lights, and is a specific character ; the thorax differs in individuals 

 from being deeply rugous to comparatively smooth, and in the promi- 

 nence of the lateral spines and tuberosities. The elytra in the large 

 majority are deep sericeous green, but in some examples, more or less 

 shot with copper, which in some individuals becomes the prevailing 

 colour, known in some collections as virescens. 



Some time ago I had an opportunity to examine several examples of 

 each of two species of Callichroma taken in Cuba, one of which, labelled 

 columbina, Dej., seems only to differ from splendidum by having the 

 thorax colored coppery bluish or violet ; if other differences exist they 

 escaped observation. 



This species was described very briefly by Dr. Leconte under Dejean's 

 catalogue name splendidum, with Cerambyx elegans. Fab., Oliv., Hald., 

 in synomymy (Jour. Acad. Nat. Sci., Phil., 2d Ser., II., 37). Dr. Asa 

 Fitch, however, states (Rep. 4, 711,) that Linnaeus had previously 

 described it under the name suaveo/ens, from an example sent him from 

 Carolina by Dr. Garden. (Appendix to last Ed. Syst. Nat., III., 224, 

 1770.) At one time this species was considered an inhabitant of the 

 West India Islands, being probably mistaken for coltimbhia or some 

 allied species. In fact, some of the species of Callichroma, of which I 

 have seen nine, are uncomfortably close, and separated by characters 

 which, in many genera, are of little moment. 



C plicatuffi, Lee, is strikingly like splendidum, but the green colour 

 of the head and thorax is constant and devoid of any coppery reflections. 

 The habits of the two species, if I am rightly informed, are more confirma- 

 tory of their being specifically different than anything yet observed in 

 their external structural characters. A friend (not an entomologist), from 

 Hamilton County, Central Texas, says this species breeds in old cactus. 

 While requiring further confirmation, this statement is probably correct, 

 from the fact that there has been no record observed of its having been 

 taken in swamps with splendidum, and from the fact that it occurs only 

 in cactus regions in Texas to Arizona, where it was taken near the south- 

 eastern boundary at Camp Bowie. (Wheeler's Reports on Exp. and 

 Surv., Vol. v., Zoology, p. 821.) 



Eupogoniiis tomentosus, Hald. — Here this species is not common • 



