10 NATURAL HISTORY BULLETIN 



Necrophilus. The contiguous or closely approximate middle coxae 

 separate it at once from Silpha, but in this respect it is similar 

 to Necrophilus, which genus it also closely resembles in sculpture 

 and in the carination of the tibiae. It is, in fact, about like a 

 Necrophilus with ten jointed antennae, truncate elytra, and elon- 

 gate abdomen, the last character probably being exaggerated by 

 maceration. If we should attempt to incorporate it in the table 

 of genera in the LeConte and Horn "Classification" it might be 

 placed after Necrophorus from which it differs by the characters 

 already given. It may be worth while to call attention to the 

 fact that it seems an osculant form between Necrophorus and 

 Silpha, two genera which are readily distinguishable at the pres- 

 ent day, and that it combines the coxal structure of the forms 

 with long elytra (represented today by Necrophilus and P elates) 

 with the short elytra of the two genera mentioned above. 



Paussopsis Ckll. 



p. SECUNDA n. sp. (Plate I, Figs. 8, 9.) Form moderately elongate, 

 subparallel. Head longer than the prothorax. Eye large, circular. Anten- 

 nae hardly elavate but thick, basal joint a little longer than the three suc- 

 ceeding, second smallest, those following are subequal among themselves 

 except the last which is larger and apparently rounded at the tip. The 

 vertex and occipital region are closely but finely punctured, the frontal 

 region more finely and less closely. Prothorax shown partly in side view, 

 and, as preserved, much wider than long, distinctly margined behind, the 

 outline regular, surface smooth and shining, (probably polished in life) 

 with extremely fine, microscopic, widely dispersed punctures. Elytra sub- 

 parallel at sides, bluntly pointed at tip, surface scarcely visibly sculptured 

 but with some indications of extremely fine lines of punctures. Length, 

 6.25 mm. 



Station number 14. One specimen, collected by Geo. N. Rohwer. The 

 type is in the Museum of the University of Colorado. 



This seems to be congeneric with P. nearctica Ckll., with which 

 it agrees in most of the specific details as well, but P. secunda is 

 a little larger, the antennae, judging from the figure, less elavate 

 and the head punctured. If Paussopsis really belongs to the 

 Paussidae it must be considered a very generalized form, since 

 neither the antennae, the head, nor the prothorax exhibit any 

 development of the peculiar distortions common among recent 

 species in that family. 



