336 Geological Society. 



male not only in tlie absence of the sexual spot on the poste- 

 rior wings, but also in having the inner margin of the anterior 

 wings straight and neither lobed at the base nor turned up in 

 the middle, and the first median veinlet and the submedian 

 vein of the same wings normally arranged and developed and 

 directed respectively to the outer margin and to the inner 

 angle, after the manner usual amongst butterflies. 



Hah. Trevandrum, Travancore, South India. Described 

 from four specimens of the male — one (the type) recently pur- 

 chased by the Indian Museum, and three the property of 

 Capt. G. F. L. Marshall, R.E., to whom I am indebted not 

 only for the opportunity of describing this interesting insect, 

 but also for permission to dissect one of the specimens in his 

 collection. 



PllOCEEDINGS OF LEAENED SOCIETIES. 



GEOLOGICAL SOCIETY. 

 January 19, 1881.— Robert Etheridge, Esq., F.R.S., 

 President, in the Chair. 

 The following communications were read : — 



1. " Further Notes on the Family Diastoporidte, Busk." By G. 11. 

 Vine, Esq. Communicated by Prof. P. Martin Duncan, M.B. Loud., 

 F.R.S., F.G.S. 



In continuing his review of the family of the Diastoporidae, the 

 author stated that upon the question of the classification of the 

 Polyzoa he is inclined to accept the views recently pubhshed by the 

 Rev. T. Hincks, in preference to the earlier ones enunciated by 

 Prof. Busk. He now described the forms found in the Lias 

 and Oolite, including I)iast02)ora stromat02)orides, Vine { = Uassica, 

 Qucnst.), B. ventricosa. Vine, D. oolitica, Vine, D. cricopora, Vine. 



The author then proceded to argue against the inclusion of the 

 foliaceous forms in the genus IJiastopora, and concluded by giving 

 a definition of the genus as now limited by himself. 



2. " Further Notes on the Carboniferous Fenestellidse." By G. 

 W. Shrubsole, Esq., F.G.S. 



The author pointed out the discrepancies in the descriptions 

 given by Lonsdale, Phillips, M'^Coy, and King of the genus Fenes- 

 tella as represented in the Silurian, Devonian, Carboniferous, and 

 Permian formations respectively. He then proposed a new defini- 

 tion of his own, and described the following species — F. pleheia, 

 M'^Coy, F. memhranacea, Phil., F. nodulosa, Phil., F.polyporata^ Phil., 

 F. crassa, M'^Coy, F. JialHnensis, sp. nov. ; and in conclusion he 

 pointed out that the few species to which he has reduced the Car- 

 boniferous FcnesteUce find their representatives in the North-Ameri- 

 can continent, only one really new form, F. Norwoodiana, having 

 been described there. 



