76 Journal New York Entomological Society. [Vol. vi. 



12 — Body small, narrow, subglabrous, highly polished and pale rufo-testaceous- 

 throughout; apical margin of the prothorax rather crenulate than serrulate. 



Iowa (Keokuk). Cosmopolitan and introduced pusillus Fabr. 



13 — Antenna? with the second joint nearly as slender as the third, the funicle brist- 

 ling with long coarse hairs anteriorly; ridge of the apical declivity short ; head 

 strongly, transversely tumid behind the epistoma. New York, Indiana and 



South Carolim. punctatus Say 



Antennae with the second joint stout, the funicle not more setose in front; declivity 

 more abrupt and flat, with the marginal ridge long. California. 



truncatus Horn 

 I have not been able to compare substriatus* of the table with Eu- 

 ropean examples, and the identification is taken from the books ; it is 

 referred to the genus Stephanopachys by Heyden, Reitter and Weise, 

 who separate also pusillus under the generic name Rhizopertha (fi/iyzo- 

 perthd). The differences seem to be scarcely generic in value. 

 Truncatus of Horn, I have not seen. 



cioim:. 



The Cioidae are intimately related to the Bostrichinae, as shown by 

 general organization, and particularly by the two small rounded sensitive 

 areas near the apices of the joints of the antennal club, greatly devel- 

 oped in the genus Plesiocis\ but, at the same time, they are closely al- 

 lied also to some groups at present assigned to the Clavicornia, such as 

 the Cryptophagidas and Mycetophagidae. In fact, the assemblages 

 which are at present collectively known as the Clavicornia, are so heter- 

 ogeneous among themselves as to indicate that they do not form a natu- 

 ral division of the Coleoptera at all, but are in many cases the extreme 

 developments of various types of Serricornia or Adephaga, and the 

 Heteromera belong near them in immediate succession. Berginus has 

 a purely serricorn habitus, and yet has been placed with the Myceto- 

 phagidae. I believe that the Cryptophagidae and Mycetophagidae 

 should not be widely separated from Cioidae and Sphindidse, and I am 

 in favor of removing them from the so-called Clavicornia and placing 

 them in the Serricornia near Cioidae. This would be far more natural 

 than to remove the Cioidae to the Clavicornia. The Cucujidae, consist- 

 ing of the subfamilies Passandrinae, Colydiinae, Monotominae, Rhyso- 

 dinae, Lyctinae, Silvaninae, Brontinae, Cucujinae and Hemipeplinae should 

 also be removed from the Clavicornia and follow Cioidae, Cryptopha- 

 gidae, etc., in the* Serricornia. The Hemipeplinae form a natural tran- 

 sition to the Heteromera. 



* Diuoderus substriatus is said by Mannerheim (Bull. Mosc, 1853, p. 233), to- 

 inhabit also the Kerai Peninsula, in Alaska. 



