1921] Wheeler: Habits of Cucujidae 183 



of deciduous trees. The larvae are often present in great numbers 

 with the beetles (Ganglbaur, 1899; Reitter, 1911). Ferris (1876) 

 found the larvse in rotten chestnut wood and states that Curtis, 

 Chapuis and Candeze took them in rotten oak wood. 



Hemipeplus margini'pennis Lee. — Cited only from Georgia 

 and Florida (Leng, 1920). According to Schwarz a rather 

 abundant species under palmetto bark (Casey, 1884). 



Hemipeplus microphthalmus Schwarz. — Cited only from 

 Florida (Leng, 1920), where it was taken flying at night by 

 Schwarz (Casey, 1884). 



Inopeplus praeustus Chevr. — Antilles. Adults and larvEe 

 living gregariously in the burrows of a Scolytid in branches of 

 cacao. The larva is peculiar in having the prolongations of the 

 ninth abdominal segment in the form of forceps (de Peyerimhoff, 

 1903). 



Family ScalidiidsR Boving. 



Catogenus rufus Fabr. — United States (Ind., la., Md., N. C, 

 Fla.). Fiske (1905) has shown that the larva is an external 

 parasite on the larvae of Braconid Hymenoptera and Cerambycid 

 pupae; "its habits differing in no essential feature from those of 

 many species of external Hymenopterous parasites. The adult is 

 fairly common throughout the South, and is found beneath the 

 loose bark of recently dead and dying trees, both conifers and 

 deciduous. It occurs at nearly all seasons of the year, but is 

 especially common during the late fall and early spring, and is 

 found hibernating in situations similar to the above mentioned." 

 Fiske seems to have overlooked a note on this beetle by Dimmock 

 (1884), who says: "In Connecticut it is common beneath the 

 loose bark of the trunks of hickory trees, and I have reared its 

 larva which fed upon a pupa of Elaphidion parallelum, a borer 

 in hickory." 



