74 [May, 



shorter than in P. planus, and the inequality of the joints from the fourth to the 

 eighth is not as obvious. In some lights the elytra have the appearance of being 

 faintly striate. The impressions of the thorax consist of two longitudinal ones 

 concave outwards, which are connected near the base and apex by transverse 

 impressions. 



3. P. subcarinatus Mann. Bull. Mosc. 1852, 363. Russian America; 

 (unknown to me.) 



LiEMOPHLCEUS Er. 



A. Frons antice trisinuata. 



1. L. biguttatus, latiusculus depressus, supra piceus, parum nitidus sub- 

 tiliter pubescens, capite thoraceque confertim punctatis, elytris confertim punc- 

 tatis striis utrinque 4 profundis, suturali antice minus distincta, macula utrinque 

 ante medium testacea ornatis ; thorace utrinque linea profunda insculpto, late- 

 ribus late rotundatis subrepandis. Long. 1 15. 



Le Conte, Agassiz' Lake Superior, 223. (1850.) 



White, Brit. Mus. Cat. (1851) p. 5. 



Cucuius biguttatus Say, Journ. Acad. Nat. Sc. 5, 267.^ 



Lcemophl&us bisignatus Guerin, Icon. Regne An. 205. 



A common species found in the Middle and Southern States, and as far west 

 as Nebraska. The under surface is frequently rufous, but is sometimes as dark 

 as the upper surface. As this species is more densely punctured than the next, 

 and agrees in this respect with the European L. moni 1 i s (Cue. bipzistulatus 

 Panz.) with which Say compares it, I have concluded that this is really Say's 

 species ; the typical specimens in the Melsheimer collection render this view 

 certain. 



The head of the male is as wide as the thorax, and. the antennae two-thirds as 

 long as the body. 



2. L. f a s c i a t u s, latiusculus depressus, rufus nitidus glaber, capite thorace- 

 que modlce punctatis, hoc lateribus rotundato vix repando, utrinque linea pro- 

 funda insculpto, elytris nigris, striis utrinque 4 profundis, suturali antice indis- 

 tincta, interstitiis parce subseriatim punctulatis, macula utrinque ante medium 

 testacea ornatis. Long. 1 *18. 



Melsheimer, Proc. Acad. Nat. Sc. 2, 113. 



Middle and Southern States to Texas ; the head of the male is very large. 



3. L.adustus, laete rufus, paulo convexus, latiusculus, nitidus glaber, capite 

 thoraceque punctatis, illo canaliculato, hoc lateribus rotundatis postice sinuatis, 

 angulis posticis prominulis, linea tenui utrinque insculpto, elytris nigris, basi 

 triangulariter laete rufis, tenuiter multistriatis, striis punctatis, interstitiis vix 

 parce punctulatis, apice rufescente. Long. -I. 



A unique male specimen of this beautiful species, found in York Co., Pennsyl- 

 vania, was kindly given me by Dr. Melsheimer under the name here adopted. 

 Body above and beneath bright rufous, shining, glabrous. Head as wide as the 

 thorax, slightly convex, finely, moderately densely punctured ; vertex finely 

 channelled ; before the eyes is a line transverse arched line ; the outline of the 

 front is concave each side and emariiinate in the middle, which is not so much 

 produced as in the two preceding; the labrum is short; mandibles long and 

 slender, emarginate at tip. Antennas moderately stout, nearly as long as the 

 body. Thorax twice as wide as long, considerably narrowed at the base, sides 

 strongly rounded, sinuate near the posterior angles, which are sharp and promi- 

 nent ; disc moderately convex, finely punctured, with the lateral line not strongly 

 impressed. Elytra not wider than the thorax, moderately convex, with 7 or 8 

 very fine striae, on which are placed moderately large punctures; the interstitial 

 spaces are marked with a few very fine punctures, which on the sutural space 

 form a somewhat regular series ; their color is black, with a large, common, tri- 

 angular, rufous spot at the base, which along the suture extends one-third the 

 .length; the apical margin is slightly reddish. The scutellum is transverse, 

 without any distinct apical angle. 



