136 Zoological Society. 



after described in detail by Mr. Curtis, whose MS. name I have 

 adopted. Two specimens were found by Mr. Darwin at Port Desire : 

 it approaches very near in size and general characters to N. Darwinii, 

 but differs in having red legs and antennae, in being of a broader 

 form, in having the legs less rough, the lateral keel of the elytra less 

 prominent, and not so distinctly crenulated, and the spurs or spines 

 at the apex of the posterior tibiae are much smaller. The length of 

 the elytra is rather less than the width, if the produced apical portion 

 be omitted 5 and if included in the measurement, the length very 

 slightly exceeds the width ; they are very convex and smooth, and 

 so is the thorax, which is twice as broad as long, and considerably 

 narrower before than behind. The head is sparingly punctured. 



Nyctelta granulata, Curtis, MSS. Nyct. atra, nitida, subro- 

 tundata; capite transversimimpresso, antice punctato ; thorace sub- 

 quadrato, ad later a crenulato, suprcL convexo, Icevi ; elytris rotun- 

 datis, apice paulb productis, suprd, convewis, ad suturam depressis, 

 rugis validis et irregularibus obsitis, his in dorso plerumque lon- 

 gitudinalibus et prope latera oblique dispositis. 



Long. corp. 8^ lin. ; lat. 6 lin. 



Hab. Cape Negro. 



This, together with several nearly allied and very remarkable spe- 

 cies of Nyctelia, occurs in Capt. King's collection, and will be here- 

 after characterized in detail by Mr. Curtis. The specimen from 

 which the above short description is taken forms part of Mr. Darwin's 

 collection, and was found at Cape Negro. The legs are very rough, 

 being thickly covered with tubercles, and they are shorter than in 

 most of the species of Nyctelia. The whole upper surface of the 

 elytra is covered with rugae, and these are very strongly marked, and 

 though very irregular, they have a general longitudinal direction on 

 the depressed space on the middle of the elytra. This sutural de- 

 pression, which is about two lines in width, is bounded on each side 

 by a broad and slightly elevated ridge ; between this ridge and the 

 outer margin the rugae have a tendency to form oblique lines. A 

 few fine punctures are observable on the fore-part of the thorax, and 

 on the sides are two grooves placed closely together, and parallel 

 with and near the lateral margin ; the narrow ridge between the 

 two grooves, as well as the marginal ridge, is crenulated. 



Nvctelia puncticollis. Nyct. ovata, atra, nitida; thorace di- 

 stincte et crebre punctato ; elytris tuberculis minutis, et ad latera 

 rugis transversis irregulariter impressis, his non forte distinctis. 



Long. corp. 9j lin. ; lat. 6 lin. 



Hab. Bahia Blanca. 



This species is rather smaller than the N. lavis, and has the tho- 

 rax and elytra less convex. The head is rather thickly and coarsely 

 punctured, excepting on the vertex. The thorax is thickly and 

 coarsely punctured, and the punctures are for the most part con- 

 fluent ; a distinctly impressed line runs parallel with and close to the 

 margins ; the lateral margins are obscurely crenulated. The elytra 

 are of a broad ovate form, and the apical produced portion is convex 



