Mr. G. 11. Waterhouse on the Entomology of S. America. 41 



Vll. — Contributions to the Entomology of the Southern Portions 

 of South America. By G. R. Waterhouse, Esq., Assistant 

 Secretary and Curator to the Zoological Society, &c. 



The Marquis de Breme having learnt through the Rev. F. W. 

 Hope that I was particularly interested in the Heteromera of the 

 southern parts of South America, kindly brought a portion of 

 his collection containing the Nyctelidce to England and placed it 

 in my hands, that I might make such notes as I required, and 

 at the same time requested me to publish so much as 1 thought 

 desirable. Availing myself therefore of this kindness and libe- 

 rality, I will commence my ^ Contributions ^ &c. by making some 

 observations on the species of the genera Nyctelia and Entomo- 

 deres as they stand in Dejean^s catalogue, — the collection of He- 

 teromerous beetles belonging to the Marquis de Breme now com- 

 prising Dejean^s specimens of that group. 



Sp. 1. Nyctelia iMczotii, Buquet, is now a member of M. Gue- 

 rin^s genus Gyriosomus, and is figured in the ' Iconogr. du Reg. 

 Anim.' (Ins. pi. 28. f. 5.), and the parts of the mouth, &c. are 

 figured (under the name Gyriosoma curvilineata) inGuerin^s ^ Mag. 

 de Zool.' class ix. pi. 103. fig. 2. 



2. Nyct. erythropus, Lacord. 



3. ebenina, Lacord. 



These two are undoubtedly in my opinion varieties of one spe- 

 cies, the former difi'ering from the latter only in having red in- 

 stead of black legs ; I possess specimens in which the legs are 

 pitchy. They constitute the genus Epipedonota of M. Solier, 

 who considers them specifically distinct. See ' Ann. de la Soc. 

 Eht. de France,^ tome v. p. 342. 



4. Nyct. senex, Lacord., also belongs to the genus Epipedo- 

 nota, and I very much doubt its being distinct from Ep. ebenina. 

 In the collection there is but one specimen, and that deformed. 

 Its chief characters may be thus expressed : — 



Epipedonota atra ; thorace latiore quam longo, piano, rugis longitu- 

 dinalibus, ad latera obliquis, notato ; elytris thorace latioribus, 

 singulorum striis tribus supra ; interstitiis distincte convexis, his 

 duabus externis irregulariter transverso-sulcatis ; carina lateral! 

 obtusa. — Long. corp. 9^ lin. ; lat. 5^ lin. 



In the form of the thorax this species agrees with Ep. ebenina, 

 and in the sculpturing there is scarcely any difference ; the lateral 

 oblique grooves on the thorax are rather more distinct and regular. 



5. Nyct. cristallisata, Lacord. A good species, in my opinion, 

 and belongs to the genus Epipedonota. Its characters are : — 



Ep. atra, nitida ; thorace latiore quam longo, rugis longitudinalibus 

 irregularibus et ad latera rugis brevibus transversis notato : elytrii 



