﻿262 LE CONTE.— SYNOPSIS OF THE 



Unknown or unrecognized species. 



Ancylonyclia profunda Blanch. Cat. Col. Mus. Paris, 132. Texas 

 Ancylonycha crassissima Blanch, ibid. 133. Texas. 

 Aucylonycha longicornis Blanch, ibid. 134. 

 Ancylonycha diffinis Blanch, ibid. 138. Texas. 

 Ancylonycha i 1 i c i sj Burni. Lamell. 2, 2nd, 326. 

 Ancylonycha gib bos a Burm. Lamell. 2, 2nd, 324. 

 Ancylonycha F o r s t e r i Burm. ibid. 325. 

 Trichestes c o m a n s Burm. ibid. 358. 

 Trichestes prununculina Burm. ibid. 360. 

 Trichestes gracilis Burm. ibid. 361. 



to ' 



GYNNIS Lee. <v 



In this genus I have placed a single small elongate species, differing from species 

 of Group IV of Lachnosterna by the obliquity of the inner posterior spur of the male 

 and by the impression of the last joint of the maxillary palpi. The head is moder- 

 ate in size, with strong frontal suture, the clypeus is deep, rounded and strongly mar- 

 gined : the antennae are 9-jointed, with the third and fourth joints longer than the 

 following : the last joint of the maxillary palpi is oval and has a slight lateral im- 

 pression externally : the mandibles are moderately prominent, the labrum is very 

 short and broad, directed backwards and very slightly concave, not by any means 

 bilobed as in the other genera of Rhizotrogi known to me. The ligula is almost 

 truncate in front, and the mentum is broadly concave ; the last joint of the labial 

 palpi is oval. The legs are slender, the middle tibiae with two, the posterior tibiae 

 with one transverse crest of spines : the tarsi are elongate, and the claws are hardly 

 perceptibly toothed near the middle. The inner spur of the posterior tibiae of the 

 male is fixed, and slightly oblique, so as to form an inferior emargination, the outer 

 one is free, slender and acute. The last ventral segment of the abdomen is moderately 

 large, slightly impressed. 



1. Gr. debilis, testacea, elongata, nitida, capite fusco sat punctato, clypeo rotundato, concavo testaceo 

 thorace lateribus rotundatis postice subangustato, sat fortiter punctato, elytris fortius punctatis baud 

 costatis, costa suturali elevata subrugosa, pectore fortiter punctato, parum pubescente. Long. -43. 

 One specimen found at Philadelphia was given me by Mr. Schafhirt. 

 The club of the antennae of the male is longer than the stem ; the abdomen is 

 longitudinally slightly impressed, and the last joint is faintly but broadly foveate, and 

 the fovea does not attain the anterior margin; the tibiae are described above. 



Listrochelus Blanchard. 



Corpus oblongum, subcylindricum alatum, supra subglabrum, elytris glauco-pruinosis. Clypeus rotun- 

 datus marginatus ; labrum profunde emarginatum ; mandibuke parum prominulse. Mentum paulo concavum, 



