FOSSIL COLEOPTERA 15 



In the absence of head and legs, the generic assignment is 

 open to some doubt, but what can be seen of the form, sculpture, 

 and vestiture points to the above reference. This insect is much 

 larger than Attagenus sopitus Seudd.. the only Dermestide thus 

 far known from the Florissant shales. 



Orphilus Erichs. 



O. DUBius n. sp. (Plate I. Fig. 7.) Similar in form to the recent 

 0. ater, and of about the same size. The sculpture is either much finer or 

 else poorly presen-eil, and the surface of the prothorax and elvtra is nearly 

 smooth. The head is not ^■isible. presumably covered by the front margin 

 of the prothorax. Length. 3.00 mm. Width, 2.05 mm. 



Stations number 14 and 14B. Two specimens, collected by Mrs. W. P. 

 Cockerell. The type is in the Museum of the L'niversity of Colorado. th« 

 cotype in the American Museum of Xatural History. 



The reference is based on the form and size of the specimen, 

 and must be considered provisional. The appearance is entirely 

 that of Orphilus. with the punctuation slightly developed. 



Amartus Lee. 



A. PETREFACTUS n. sp. (Plate II, Figs. 12, 13.) Form a little more 

 elongate than in the recent A. rufipes and A. tinclus. Head, exclusive of 

 the mandibles, as long as the prothorax but much less broad. Eyes not 

 definable. Antennae eleven jointed, first joint large and thick, third long, 

 club gradually formed as \isual in the tribe Brachypterini. Prothorax dis- 

 torted but evidently narrowed anteriorly and with rounded sides, about 

 two and two-fifths times as broad as long. Elytra showing only along one 

 edge, not displaying any characters of interest. Abdomen somewhat dis- 

 placed but showing that the segments near the base are short. Length, 

 3.85 mm. 



Station number 14. One specimen, collector not specified, which is con- 

 sidered the type and is in the Museum of the University of Colorado. 

 Another example, referred here with little doubt, comes from Station 

 number 17 and was collected by Mrs. Cockerell. 



This insect goes very well with Amartus. which genus is now 

 represented on our Pacific coast. The formation of the antennal 

 club does not permit of its reference to the Carpophilini. to which 

 it has a superficial resemblance. About the only structural char- 

 acter of importance that can be made out on the underside is the 

 shape of the front coxa? which are shown to be transverse and 

 narrowly separated by the prosternum. 



