138 Journal New York Entomological Society. [voLviii. 



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

 mount it to l)etter observe the structure of the mouth, the trophi 

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



MVRMECHIXENIN.E. 



This subfemily is evidently assigned properly to the Tritomidte by 

 LeConte and Horn, although the facies departs conspicuously by 

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

 si^arsely clothed with an even decumbent vestiture, finer and less con- 

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



Myrmechixenus Cliev. 



Our single species occurs throughout the more southern parts of the 

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

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

 follows : — 



I'lody narrowly oI)long, convex, rather sliining tlioiigh finely, deeply and very closely 

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

 head subtriangular, the eyes well-developed, moderately convex, coarsely faceted 

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

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

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

 apex equal and feebly arcuate ; elytra between t^vo and three times as long as 

 the prothorax and about two-lifihs wider, the humeri exposed at liase ; sides 

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

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

 id;v, the last partly exposed dorsally. Length 1.7-I.Smm.; width 0.75-0.78 

 mm latridioides CrotcJi 



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

 in my cabinet are trom 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 Ijelieving that it is cor- 

 rectly placed in the Tritomidce. 



DERMESTID-E. 



The Dermestidx 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, 



