138 Journal New York Entomological Society. [Voi.vin. 



The single example before me is so frail that I am unable to dis- 

 mount it to better observe the structure of the mouth, the tropin 

 however appear to be in perfect homology with the rest of the family. 



MvRMECHIXENIN.E. 



This subfamily is evidently assigned properly to the TritomidDe by 

 LeConte and Horn, although the facies departs conspicuously by 

 reason of the small prothorax and wide elytra, the latter rather 

 sparsely clothed with an even decumbent vestiture, finer and less con- 

 spicuous than in Tritominse. The single genus is as follows : — 



Myrmechixenus Chev. 



Our single species occurs throughout the more southern parts of the 

 United States, from the Atlantic to the Pacific, and may possibly be 

 identical with some European form ; it may be briefly defined as 

 follows : — 



Body narrowly oblong, convex, rather shining though finely, deeply and very closely 

 punctured throughout, reddish-brown in color, the legs and antennae paler ; 

 head sul (triangular, the eyes well-developed, moderately convex, coarsely faceted 

 as usual ; antenn;v moderate, the club loosely 5-jointed, joints six to eight in- 

 creasing gradually in width ; prothorax distinctly wider than the head, slightly 

 transverse, widest near apical third, the sides parallel, rounded, the base and 

 apex equal and feebly arcuate ; elytra between two and three times as long as 

 the prothorax and about two-fifths wider, the humeri exposed at base ; sides 

 parallel and broadly arcuate, the apex obtusely rounded ; abdominal segments 

 convex, gradually and but slightly decreasing in length, as usual in the Tritom- 

 idic, the last partly exposed dorsally. Length 1. 7-1. 8 mm. ; width 0.75-0. 78 

 mm latridioides Crotch 



This species does not appear to be very common ; the specimens 

 in my cabinet are from South Carolina, El Paso, Texas, and River- 

 side, California, the latter sent to me by Mr. H. C. Fall. The basal 

 joint of the hind tarsi is much elongated, as in normal members of 

 the family, which is an additional reason for believing that it is cor- 

 rectly placed in the Tritomidse. 



DERMESTID.E. 



The Dermestid?e are a small family of clavicorn beetles, which, in 

 their notably varied structural characters, seem to constitute one of 

 the old synthetic types of Coleoptera, having some philogenetic 

 relationship with both the Geodephaga and Serricornia. They have 

 the anterior coxal cavities open behind, the tarsi simple and 5-jointed, 



