256 JOHN L. LE CONTE, M. D. 



fnidiiia. The antcnna3 are well displayed in the two specimens given 

 me by Mr. Ulke, and show that the 1st joint is much broader than the 

 2nd, though the latter is thicker than the following ones, the 1st is not 

 so elongated as in Miirmidius ; the tibiae are narrower, and the legs 

 somewhat less retractile. The pro- and meso-sternum fit closely to- 

 gether in both genera, precisely as in the Histeridae, with which in all 

 the characters mentioned they show a strong affinity, and no resem- 

 blance at all to Cerylon or its allies.] 



Corticaria denticulata Mann., Germ. Zeitschr. v, 2Z.^Lathridius dent. Gyll. 

 iv, 126. — Commou to Europe and Korth America. 



Corticaria serrata Mann. ibid, v, 28.^Dermestes serr. Payk. Fauna, i, 300.= 

 Lathridius scrr. Gyll. iv, 126. — Europe and North America. To this species 

 without doubt belong C. denticulata Kirby, Fn. Bor. Am. iv, 110, and Lathr. 

 S-dentatus Say, Journ, Ac. Nat. Sc. Phila. iii, 325. 



Corticara elongata Gyll. iv, 1.30, {Lathr.) — Europe and North America. 



Corticaria pusilla Mann. Germ. Zeitschr. v, 4S.— North America, from South 

 Carolina to CiUifornia. 



[This is the species which I described under the name riigulosa ; it 

 is very abundant at Lake Superior, but is not found in California, 

 the specimens so labelled in Dr. Zimmermann's collection were sent to 

 him by me, and were collected on point Kewenaw.] 



Corticaria villosa Zim. — Length | line. Ferruginous, nearly allied to ainer- 

 icana, but the head and prothorax are more thickly punctured, and clothed 

 with very short grayish squamitbrm hairs, the transverse impression of the 

 prothorax is less deep, the elytra with unusually long hairs, and also more 

 densely pubescent on the intervals, so that viewed sideways they appear cloth- 

 ed with a silky covering. 



Corticaria subimpressa Zim. — Length § line. Ferruginous with brownish 

 elytra; front much broader than in americana, with very fine scattered punc- 

 tures. Prothorax a little broader than the head, transversely quadrate, mod- 

 erately convex, very finely punctured, hind margin slightly rounded, hind an- 

 gles acute, prominent, front angles rounded, disc in front of the base with a 

 feeble transverse iuipression, which sometimes is scarcely visible, usually how- 

 ever composed of three foveas of which the lateral ones extend to the side mar- 

 gin, and the middle one appears punctiform. Elytra finely punctate-striate, 

 and in the strise and upon the intervals furnished with short gray squamitbrm 

 hairs arranged in rows. — North America. 



C. similata and subtilis Manuh. are allied to this species. 



Lathridius rugicollis Mannh. Germ. Zeitschr. v, n.=Ips rug, Oliv. ii, 18, 13, 

 tab. 3, fig. 19. — Europe and North America. 



[This is the species I described under the name L. 7-eJlexiis (IVoc. 

 Ac. Nat. Sc. Phil, vii, 304.] 



Silvanus bicornis Eosenh. — Found both in Europe and America. This spe- 

 cies closely resembles S. surinamensis in form, color, size and sculpture, and dif- 

 fers only by the elevated side margin of the front terminating anteriorly in a 



