﻿252 LE CONTE.— SYNOPSIS OF THE 



characters. The thorax is shining, and the punctures are equally distributed ; the 

 sides are somewhat serrate, and behind the middle are nearly parallel ; the pygidium 

 is coarsely punctured, the propygidium is nearly smooth, with a few punctures as 

 usual at the margin. The abdomen (of the female) is convex, punctured and pubes- 

 cent at the sides, more deeply on the last two segments ; the last one has a triangular 

 flattened impression at the middle; the pectus is thinly clothed with fine short 

 yellowish hair ; the tibiae are dark brown, and the tarsi paler. Burmeister, not having 

 seen this species, places it as identical with L. m i c a n s . 



32. L. rugosa, ferrugineo-fusca (vel fusco-nigra) oblonga, convexa nitida, capite densissime punctato, 

 clypeo. tenue marginato, emarginato, thorace lateribus fere angulatis, postice subangustato, confertim 

 sat fortiter punctato, linea dorsali lasvi, elytris punctatis rugosis subcostatis, pygidio parce punctato, 

 pectore breviter villoso, unguiculis dente longo armatis. Long. "80 — -85. 



Ancylovycha rugosa Mels. Proc. Acad. Nat. Sc. 2, 140 ; Burm. Lamell. 2, 2nd, 328. 



Two specimens from Platte Eiver. According to the authors quoted, it is found in 

 Virginia and Pennsylvania. The propygidium is finely and sparsely punctured; the 

 sides of the abdomen are finely punctured, with the punctures larger on the penulti- 

 mate segment. 



In the male the club of the antennae is as long as the stem ; the abdomen is 

 flattened in the middle ; the penultimate segment has a deep transverse impression, 

 and each side of it an oblique elevation ; the last segment has a broad reniform im- 

 pression, and the pygidium is broad and obtusely rounded. 



In the female the abdomen is convex, the last segment is sparsely punctured, and 

 deeply squarely emarginate ; the penultimate segment has a posterior deep tranverse 

 impression ; and the pygidium is triangular. 



33. L. affinis, fusco-ferruginea, oblonga, convexa, nitida, capite thoraceque obscurioribus, illo confer- 

 tissime punctato, clypeo tenue marginato, emarginato, thorace grosse punctato, linea dorsali laevi, late- 

 ribus fortiter serratis angulatis, postice subangustato, elytris punctulatis vix costatis, pygidio parce 

 punctato, pectore breviter villoso, unguiculis dente niagno armatis. Long. -73. 



One male, upper Missouri, Dr. P. V. Hayden. Closely related to the preceding, 

 but the thorax is shorter, more narrowed in front, and strongly serrate on the sides : 

 the elytra are smoother, not rugose, with finer punctures- 



The club of the antennae is shorter than the stem ; the last segment of the abdomen 

 is broadly foveate and the penultimate segment is broadly impressed, with a straight 

 transverse obtuse elevation- 



34. L. K n o c h i i, fusco-ferruginea, capite thoraceque obscurioribus, illo densissime punctato, clypeo 

 tenuiter marginato, emarginato, thorace rude confluenter punctato, lateribus angulatis fortiter serratis, 

 postice angustato, elytris 'confertim punctato-rugosis vix costatis, pygidio punctato, pectore breviter 

 pubescente, unguiculis dente magno armatis. Long. -90. 



Melolontha Knochii Gyll. Schonh. Syn. Ins. App. 75. 



Ancylonycha Knocliii Blanch. Cat. Col. Mus. Paris, 133 ; Burm. Lamell. 2, 2d, 325. 



