82 J. L. LECONTE, M. D. 



lished. In the same paper he describes another species P. hirticolh's, 

 in which the antennae are 8-lcaved, but the 4th joint, which is only 

 slightly prolonfi;ed is counted in the club. This species seems to be 

 the second form mentioned by me, of which I figured the antenna. 



The females are much larger than the % , very ovate and convex, 

 without wings, with the legs stouter and the tarsi short, only one- 

 third as long as the tibiae. The prolongation at the front of the head 

 is short and broad, not emarginate, the vertical horn short, the pro- 

 thorax coarsely punctured, not impressed, and finally the antenna? 

 very much smaller, with the club rounded. 



Just as this paper was being put to press, T received from Mr. Beh- 

 rens a larva found deep in the earth. The description of it, by Baron 

 Osten Sacken, will follow this note. I will merely observe, that its 

 characters fully confirm the propriety of placing the genus as a dis- 

 tinct tribe, near Irox and Geotrupes, as I have done in my Classifica- 

 tion. 



The four species known to me may be divided into two groups ac- 

 cording to the form of the antennae, and the diiferences expressed in 

 in the following table : — 



I. AntenusB with joints 3 — 5 nearly equal, not dilated. 



6th joint scarcely wider than the 5th; 7th prolonged into a short leaf, one- 

 fourth as long as the 8—11 1. fiinbriata. 



6th prolonged inwards forming a leaf one-half as long as the 7th, which is 

 shorter than the 8— II 2. Behrensii. 



II. Antennae with 3d joint elongated, 4th acutely produced inwards, 5th lamel- 



liform, though shorter than the following ones. 

 Hind angles of prothorax feebly rounded, disc clothed with long hair, elytra 



feebly striate 3. ItirticolIiM. 



Hind angles of prothorax strongly rounded, disc strongly retuse, elytra 



deeply striate 4. Edwardsii. 



®!I»=^^ 



1. P. fimbriata.— Blackish-brown above, chestnut beneath; prothorax 

 much narrowed in front, hind angles feebly rounded; disc slightly impressed 

 in front, finely, sparsely punctured, pilose only at the margin; elytra with dis- 

 tinct though not deep punctures and strise; antennce with the 6th joint not 

 prolonged. Length 1.1 inch; 27 mm. 



I have seen only the original specimen in bad condition, which has 

 been figured in the U. S. P. R. R. Expl. and Surveys, Insects pi. 1, 



