43 Mr. G. R. Waterhouse : Conti^ibutions to the Entomology 



thorace latioribus valde rugosis ; rugae plerumque transversae ; sin- 

 gulorum supra costis duabus elevatis. — Long. corp. 9^ lin. ; lat. 

 5 lin. 



Descrip, — Head punctui'ed in front, with some strongly waved 

 transverse rugae on the disc, and behind with minute confluent 

 punctures. Thorax less than half as broad again as long, flat (or 

 rather slightly concave), covered nearly throughout with longi- 

 tudinal folds, the usual transverse rugae at the sides being very 

 short. Elytra covered with distinct rugae throughout ; each ely- 

 tron with two moderately elevated costae, the second or outermost 

 being the most distinct ; suture not elevated ; the rugae between 

 the suture and the first rib or keel very irregular ; between the 

 first and second costae, and between the latter and the lateral 

 keel, they are transverse, and for the most part curved and waved ; 

 they are strongly marked, but less regular than the transverse 

 folds in Ep. ebenina. 



6. Nyct. monilisj Lacord. This is the species which I regarded 

 as a variety of Ep. ebenina, and noticed as such in my account of 

 the species of Nyctelidce brought home by Mr. Darwin (see ' Pro- 

 ceedings of the Zool. Soc' for December 1841, p. 118). Lacor- 

 daire's specimens agree with Mr. Darwin's in having the white 

 zigzag lines on the elytra ; they are rather smaller than the ty- 

 pical ebenina, the transverse grooves between the costae on the 

 elytra are less strongly marked, and the tarsi are apparently more 

 slender. I am not however yet satisfied that it is a distinct species. 



7. Nyct. andicola, Lacord. This, with the N. crenicosta of 

 Guer., is grouped under the generic title of Auladera by M. Solier, 

 and is described in the 'Annales de la Soc. Ent. de France/ 

 tome V. p. 834. 



8. Nyct. desertorum, Lacord. 



9. serva, Lacord. 



10. caraboides, Lacord. 



14. picta, Lacord. 



15. Dejeanii, Lacord. 



These belong to M. Solier' s genus Mitragenius, of which the 

 type is the N. Dejeanii. 1 cannot follow M. Lacordaire in regard- 

 ing these species as all of them distinct. There appear to me to be 

 but three species at most. N. Dejeanii and N. serva are very 

 probably distinct, but N. desertorum, N. caraboides and N. picta 

 I think should certainly be grouped under one specific title. 



N. Dejeanii is described by M. Solier in the vol. of the French 

 Society's Transactions already quoted. The colour of the epi- 

 dermis covering the elytra is very remarkable, and is described by 

 M. Solier as " d'un cuivre pale," terms which did not convey to 

 me the tint which I found upon seeing the specimens. I should 



