464 Mr. G. J. Arrow on neio 



The entire suiface is very finely punctured^ except tlie liead, 

 which is closely rugose, and there is a very fine and close 

 pubescence, with a few long erect hairs upon the prothorax 

 and near the anterior and sutural margins of the elj^tra. 



This species resembles L.fulvipennts, Bl., with the type of 

 which in the Paris Museum it has been kindly compared for 

 me by M. Lesne. It differs not only in having a joint less 

 in the antenna, but in the much shorter and sparser hairy 

 clothing of the breast and much scantier long hairs upon the 

 pronotum. 



Blanchard divided the genus into two sections having nine 

 and ten joints respectively in the antennge; but this is an 

 unsafe distinction to rely upon, the number and shape of tiie 

 joints being liable to vary in the individuals of a species. In 

 a species* in the British Museum closely allied to L.fulvi- 

 pennis and the present one males taken at the same time 

 show both 9-jointed and 10-jointed antennsej the fourth and 

 fifth joints being sometimes distinct and sometimes reduced to 

 a single one. 



A seiies of specimens of Enema pan, Y., from Porto Velho, 

 confirm in an interesting way the conviction I expressed in 

 a paper published two years ago, that the form called E. in- 

 fundihulum, although strikingly different and apparently 

 unconnected by intermediates, is really only a phase of the 

 male oi E. pan. Eight specimens taken together by Messrs. 

 Mann and Baker consist of three females, three typical males 

 of varying degrees of development and two males of the 

 tnfundihuluni phase. 



* Lachnosterna nitidicauda, sp. n. 



Rufa, elyti'is pallidioiibus, corpore toto brevissime sat deuse griseo- 

 pubescenti, pronoto elytroruiuque basi pilis longioribus parce vestitis, 

 pectore dense, baud longe, flavo-villoso ; clypeo rotundato, liaud emar- 

 ginato, fortiter crebre puuctato, fronte grosse piinctato-rugoso ; pronoto 

 nitido, fortiter puuctato, lateribus baud crenatis, medio angulatis, antice 

 couvergentibus, postice fere parallelis, angulis posticis rectis ; scutello 

 efvtrisque baud nitidis, crebre punctalis ; pygidio crebre et fortiter 

 puuctato, autice sericeo-opaco, postice nitido ; antennis 10- vel 9-arti- 

 culatis, tibiis anticis 3-deutatis, dente supero minuto: 



t5 , clava anteunali longa. 



Long. 18 nun. ; lat. max, 9-5 mm. 



Hah. Okntral Brazil : Cbapada (2G00 ft., A, Robert), 



