﻿240 LE CONTE.— SYNOPSIS OF THE 



valde eoncavo, ernarginato, testaceo parce punctato, thorace brevi sat punctato, elytris fortius punctatis 

 subcostatis, pectore densius villoso. Long. -52. 



Platte River, Kansas Territory. Nearly allied to the next, but the head is more 

 coarsely and less densely punctured, and the breast is more hairy. The form is a 

 little more robust. 



In the male the club of the antennas is as long as the stem, the abdomen is slightly 

 flattened longitudinally, and the penultimate segment has a small posterior lunate 

 impression at the middle ; the inner spur of the posterior tibiae is very small and fixed, 

 but the outer one is long and flattened. 



In the female the pygidium is less convex and more triangular, and the inner pos- 

 terior spur is about one-half as long as the outer one, but more slender. 



6. L. longitarsis, elongata, cylindrica pallide testacea, capite fusco confluenter punctato, fronte parce 



punctato, testaceo, valde eoncavo, emarginato, thorace brevi sat punctato, elytris fortius punctatis sub- 

 costatis, pectore parce piloso. Long. -47. 

 Melolonlha longitarsis Say, Journ. Acad. Nat. Sc. Philadelphia, 3, 242. 



Illinois, Mr. Willcox : only males were procured, and in their sexual characters 

 they precisely resemble the preceding species. 



7. L. dispar, cylindrica rufo-testacea nitida, sequaliter fortius sat dense punctata, capite fusco, clypeo 



parcius punctato, rotundato valde eoncavo, elytris subcostatis, pectore parum pubescente. Long. *45. 

 Tricliestes dispar Burm. Lamell. 2, 2nd, 361. 



Southern States. More robust than the preceding, and approaching in form those 

 of the next group. Burmeister describes the male as fuscous on the upper surface ; 

 the only two specimens in my collection are males, but are of a reddish yellow color 

 both above and beneath ; only the head is dark. 



The club of the male is longer than the stem of the antennas ; the three anterior 

 segments of the abdomen are longitudinally impressed and the last segment is slightly 

 swollen : the pygidium is slightly transverse and strongly punctured ; the inner spur 

 of the posterior tibiae is fixed, one-half the length of the outer, which is slender. 



Group V. 



Containing cylindrical species having the body glabrous above, and beneath only 

 slightly pubescent, even on the breast. The head is large, being scarcely one fourth 

 narrower than the thorax ; the clypeus is strongly margined, sometimes entire, some- 

 times emarginate. The mandibles project beyond the labrum when closed. The last 

 joint of the maxillary palpi is variable in form, but is always more or less oval, and 

 flattened or impressed along the outer part. The antennse are 10-jointed, with the 

 joints 3 — 5 connate and indistinct, the sixth and seventh are slightly produced inwards. 

 The thorax is remarkably broad, not narrowed behind, nor serrate on the sides. The 

 last joint of the abdomen is relatively smaller than in the other groups having the 

 inner posterior spur of the male fixed, but in the male is impressed and emarginate. 



