6 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 65. 



From the foregoing it is apparent tluit Rhinandms and -Zophoha^ 

 more closely resemble the Blaptinae than do any other genera of the 

 Tenebrioninae. In fact the only consistant character separating 

 them from the Blaptinae is the absence of any transverse, densely 

 setose elevation on the labrum, a character present in all Blaptinae 

 and absent in all Tenebrioninae, . 



GENERA OF SUBFAMILY TENEBRIONINAE. 



Of the 23 genera of the subfamily Tenebrioninae in the United 

 States, which Leng* recognizes, larvae of the following 13 were 

 available for study : 



The genus Polypdelurus Eschscholtz, of which there are three 

 species, is represented by germinatus Solier. Tlie material consists 

 of a larval skin and a reared adult. The larva was found by the 

 author in a decayed oak twig at Falls Church, Virginia, July 25, 

 1918, and reared September 7, 1918. 



Material of the genus Rhinandnis LeConte consists of several 

 larvae, larval skins, a pupa, pupal remains, and reared adults of 

 suhlaevis Horn. The larvae were taken by H. G. Hubbard from the 

 nest of a rat {Neotoina alhigula) in Tucson, Arizona, during the 

 period from January to June, 1897, and reared by T. Pergande. 

 Doctor Schwarz states that it is very difficult to separate the adults 

 from those of Alohates sublaevis (Beauvois), and he was at first in 

 doubt as to which genus they belonged. He has not had an oppor- 

 tunity to examine the types. The larvae of these two genera, how- 

 ever, can be easily separated by the characters given m the key. On 

 the other hand, the larvae of Hubbard are hard to separate from 

 Zophohas^ closely allied to RMnandrus. For this reason Doctor 

 Schwarz, like the writer, feels quite certain that the above-mentioned 

 material is referable to RMnandrus. 



The genus Zophohas Blanchard contains only one species {mono 

 P'abricius). A larval specimen was collected by E. A. Schwarz in the 

 canal zone of Panama, February, 1911. Doctor Schwarz is not 

 positive of the determination, but from a comparison of the char- 

 acter of this with the closely allied Rhinandrus suhlaevis, the writer 

 feels quite certain that the determination is correct. Another larval 

 specimen, collected by M. A. Palmer, in a cave at Guana Jay, Cuba, 

 May 5, 1900, is very closely related to this genus. 



The genus Scotohates Horn, consisting of two species, is repre- 

 sented in the national collection by calcaratus (Fabricius). Since 

 this is one of the most abundant species in the eastern part of the 



• Leng, C. v., 1920, Catalogue of the Coleoptera of America, North of Mexico, pp. 

 21&-219. The names of Leng is followed throughout in discussing tlie material repre- 

 sented under each genus. 



