356 Linnaan Society. 



19. Bolboceras indicus, Hope MSS. ; fulvo-rufus, capite antice tuberculis 

 duobus conicis erectis armato, pronoto laevissimo antice excavatione 

 semicirculari parum profunda notato, calcari pedum anticorum elon- 

 gato obtuso, tibiis anticis 9-dentatft. — Long. corp. h'n. 4. 



Hob. in India, orientali centrali. In Mus. Saunders et Hope. 



20. Bolboceras lineatus, Melly MSS. ; fulvus nitidus, capite nigro 

 punctato inter oculos tuberculo apice subbifido armato, pronoto sim- 

 plici macula discoidali nigra, elytris convexis sutura striisque longitu- 

 dinalibus elevatis nigris, tibiis anticis 8-dentatis. — Long. corp. lin. 3|. 



Bab. in insula Ceylon. In Mus. Melly. 



Subgenus Eucanthus, Westw. 



Corpus minus depressum quam in reliquis ; pronoto antice haud retuso. 

 Tibia anticae dentibus duobus apicaiibus magnis aliisque minutis ex- 

 temis versus basin armato. Elytra punctato-striata ; singulo striis 

 5 tantum inter humeros et suturam, punctis profundis. 



21. Bolboceras (Eucanthus) Melibceus, Fabrkius (Ent. Syst. i. p. 20) ; 

 rufo- vel piceo-niger, clypeo carina transversa plus minusve elevata 

 (quasi e tuberculis duobus conjunctis formata) verticeque cornu bre- 

 vissimo truncato (parum emarginato) instructis, pronoto subdepresso 

 inaequali, canali punctata longitudinal! in medio (marginem anticam 

 haud attingente) impressionibusque lateralibus curvatis punctatis tuber- 

 culoque utrinque instructis, elytris glaberrimis punctato- striatis. — Long, 

 corp. lin. 4-5 £. 



Bolboceras concinnus, Dejean, Cat. Coleopt. 

 Hab. in America boreali. In Mus. D. Hope. 



Mr.Westwood concludes with some observations on Bolb. Lazarus, 

 Fabr., which he regards as closely allied to, if not identical with, 

 Bolb. Melibceus of the same author. 



June 20.— E. Forster, Esq., V.P., in the Chair. 



Read a Postscript to Mr. Newport's paper on Pteronarcys regalis. 



The author referred to the paper already read to show that the 

 genus Pteronarcys ought to be arranged after Perla, and before 

 Capnia and Nemoura, which it most nearly approaches in the struc- 

 ture of its alimentary canal ; while Perla has affinities with the 

 Orthoptera through the Blattida. The Perla arenosa of Pictet was 

 regarded as making the nearest approach to the latter family, and 

 this species was shown to be the Perla abnormis of Newman. The 

 larva and pupa of this species were described from specimens taken 

 by Mr. Barnston in Canada, and now in the British Museum, and the 

 habits of the species were detailed as observed by that gentleman. 



The generic characters of Pteronarcys were proposed to be revised 

 as follows : — 



Pteronarcys, Newm. 



Char. Gen. Segmenta thoracica etiam in Imagine branchiis externis 

 praedita. Alee magnse, reticulata?. Palpi maxillares labialibus multo 

 longiores, 5-articulati ; articulis 2 basalibus brevibus, reliquis elongatis, 

 externe dilatatis. Mandibulce parvoe, obtusae. tegmentum abdominale 

 octavum in mari processu longo ventrali muni turn, in fcemina paulo 

 evolutum vel bifidum. 



