Zoological Society, 133 



Mr. Bridges, and as I have reason to believe they will be distributed 

 in most of the public and private entomological collections, I shall 

 regard it as a type for comparison in describing some other species 

 of the same genus. 



Nyctelia L.EVIS, var. rufipes. Many specimens of a Nyctelia 

 agreeing with the N, lavis, but differing in having the legs and an- 

 tennae of a pitchy red colour, were contained in Mr. Bridges's collec- 

 tion. Of these red-legged specimens, as well as of those having the 

 legs concolorous with the body, there are males and females ; but the 

 red-legged specimens are generally rather narrower, and often have 

 a slight trace of transverse depressions on the outer side of the elytra ; 

 the difference of form and sculpturing, however, is not constantly 

 combined with the red colouring of the legs and antennae, and as in 

 some other species of Nyctelia andEpipedonota I have found a similar 

 difference in the colouring of the legs, &c, I cannot regard that 

 character as specific. 



Nyctelia transverso-sulcata. Nyct.atra, nitida; capite antice 

 sparsim punctata : elytris vice duplb latioribus quam longis, antice 

 potiusquam postice angustioribus, angulis productis, subacutis : 

 elytris mediocriter convexis, brevibus, ovatis, apice producto, sulcis 

 hand ad medium attingentibus, profundis et leviter undulatis, trans- 

 versim insculptis ; segmentis abdominalibus fere Icevibus. 



Long. corp. 9 lin. ; lat. 5J. 



This species is smaller than the 2V. Icevis, and the thorax and 

 elytra are less convex. The head has a few scattered punctures in 

 front, and numerous very fine punctures on the hinder part, near 

 the eyes ; the remaining portions are smooth. The thorax is im- 

 punctate, but little convex above, and has two indistinct foveae on 

 each side near the posterior angles, and joining the hinder margin. 

 The elytra are ovate and slightly convex ; the apical portion is pro- 

 duced, and has the outer margin slightly reflected : the lateral keel 

 of the elytra is very prominent, and distinctly crenulated : extending 

 inwards from this keel, to about the middle of the elytron, are a series 

 of transverse and slightly irregular grooves, about fourteen in num- 

 ber, on each elytron ; the length of these grooves (the interstices of 

 which are convex) varies so, that they all terminate nearly at the 

 same distance from the suture. On the space between these trans- 

 verse sulci and the suture are two longitudinal striae, which are some- 

 what indistinct, and interrupted in parts, excepting on the apical 

 portion of the elytron, where the innermost of the two striae is well 

 marked, and the suture of the elytra is at this part somewhat ele- 

 vated. Numerous oblique furrows are observable on the produced 

 apical portion of the elytra. The portion of the elytra which lies 

 below the keel presents no distinct sculpturing. The abdominal 

 segment presents scarcely any trace of longitudinal rugae. The legs 

 are black, but have a slightly pitchy hue. 



Species of Nyctelia from the collection formed by C. Darwin, Esq., 

 during the voyage of H. M.S. Beagle. 



Nyctelia plicata. Nyct. ovata, nigra, nitida ; capite anteriore 

 crebre punctato, posterior e fere Icevi; thorace transverso, elytris 



