252 GEO. H. HORN, M. D. 



Female. — Anteiinal club shorter than the funiculus. Penulti- 

 mate ventral segment with a linear impression close to and parallel 

 with the hind margin. Hind tarsi slightly shorter than the male. 



Variations. — Apart from the usual color variation the most 

 striking is the punctuation of the thorax. The kinds of variation 

 may be best explained by accepting as races the various forms which 

 it seems necessary to aggregate under one common name. It must 

 not, however, be inferred that the races are sharply defined, as there 

 is every intergrade in the numerous specimens examined and in the 

 large series now before me. 



L. fraterna Harr. — Thoracic punctures moderately coarse, sparse 

 and somewhat unequal in size, more closely placed near the sides, 

 median line smoother. Lateral margin usually entire. As a rule 

 the elytra] costse are very feeble. 



This is the form most common from Maryland northward. 



L. cognata Burm. — Thoracic punctures coarse, bnt equal in size, 

 more sparsely placed at middle and closer at the sides, with a ten- 

 dency observed to form smooth spaces on each side. The lateral 

 margin is iri'egular, sometimes feebly crenate. Elytral sculpture 

 somewhat more pronounced as to the costse and slightly rugulose. 



This race is the more abundant south of Maryland. L. lutescens 

 Lee, is intermediate between this race and the next. 



L. Forsteri Burm. (lugubris Lee.) — Punctures as coarse as in cog- 

 nata, but widely distant on the disc, having large smooth spaces on 

 each side in front of the middle as well as along the base, this style 

 of sculpture recalling the normal form of marginalh. The lateral 

 margin is usually irregular, rarely feebly crenate. Elytral sculpture 

 as in cognata. In this race it is more often observed that the head 

 and thorax are nearly })iceous in color, while the elytra are reddish- 

 brown. 



The habitat of this species, although parallel witli the two pre- 

 ceding, is more inland, although I have specimens from New Jersey, 

 specimens otherwise are from western New York to North Carolina 

 and Tennesse, extending westward to Iowa. 



L. semicrihrata Lee. — The punctures are still larger than in Forsteri, 

 deeper and more widely scattered. The elytral punctures are also 

 somewhat coarser, but the costse are feeble. 



Of this form I have seen two specimens S and 9 the locality of 

 which is uncertain, but probably Georgia. 



