Coleopterological Notices, V. 433 



ject far beyond the abdomen, are dehiscent in apical fourth, and 

 obliquely narrowed from just behind the middle. 



In the male of convexum the fifth segment is transverse and 

 unmodified, the sixth very short, transverse at apex, with a small 

 feeble median sinuation, the posterior tarsi somewhat as in fra- 

 ternum. The elytra in the female are nearly as \n f rater num but 

 have the sides more parallel. 



PSELAPHIDiE. 



On recently arranging my long-neglected material in this remark- 

 able family, I found so much to correct and explain in my earlier 

 work and, incidentally, so many undescribed and interesting spe- 

 cies, which had been gradually acccumulating, that it seemed to 

 me a few notes might not be unacceptable to general students of 

 the famil3\ In the arrangement of the tribes I have followed the 

 order proposed by Mr. A. Ralfray, in his valuable revision published 

 a few years since in the " Revue d'Entomologie." 



The mode of antennal insertion in this family does not seem to 

 have been dwelt upon thus far in systematic works. The first joint 

 is attached to the under part of the sides of the front by the upper 

 part of its base, the basal parts being, as it were, turned upward to 

 the point of attachment. This structure, which is of course not 

 essentially different from that seen elsewhere in the Coleoptera ex- 

 cept in degree, is best displayed in such genera as Pselaphus and 

 Tychus ; but at the same time it is a constant peculiarity of the 

 family ; it restricts the motion of the antennae almost to a hori- 

 zontal plane. 



Faronini. 



The general form of the body in this tribe resembles that of the 

 Euplectini, but many features, and especially the tarsus of Faronus 

 and its immediately i-elated genera, show that it is also very closely 

 allied to certain Staphylinidae. The tarsus of Faronus is exactly 

 similar in structure to that of many Oxytelini, and the transverse 

 pubescent line of the first visible dorsal segment, a very important 

 and characteristic modification in the true Faronini, is frequently 

 seen in the Omalini. The tribe is thus truly intermediate between 

 the Staphylinidae and Pselaphidae, but these remarks apply fully 

 only to the small group having staphylinide tarsi referred to above. 



