42 



more upright direction and less outward curvature of the horns 

 of the male. 



Mr. E, G. BouLENGER, F.Z.S., Curator of Reptiles, read a 

 paper dealing with the breeding-habits of the " Millions " Fish 

 {Girardinus pceciloides) from observations made in the Society's 

 Gardens, and recorded cases of the male of this species breeding 

 before assuming the livery of its sex. The author drew attention 

 to parallel cases among fishes, in which, however, except in one 

 case, the question was one of degree only. 



The Rev. T. R. R. Stebbing, M.A., F.R.S., F.Z.S., read a paper 

 entitled " The Crustacea Isopoda of the ' Porcupine ' Expedi- 

 tion." In the tribe Flabellifera, family Gnathiidse, two new species 

 were assigned to the genus Gnathia, and a new genus was 

 instituted to receive a new species called Akidognathia cedipus. 

 In the tribe Asellota a new family, Thambematidse, was proposed 

 for a new genus with a new species named Thambema cmiicorum. 

 Gnathia cristatipes, sp. n., owed its name to the striking processes 

 on the second and third joints of the second perseopods, its head 

 in dorsal view being almost circular. Gnathia schistifrons, sp. n., 

 had a head much wider than long, with a rounded notch in the 

 middle of the front, a peculiarity which it shared with G. cceca^ 

 Richardson, 1911, without sharing the blindness of that species. 

 Alcidognathia oedip)us, gen. et sp. n., deserved its specific name alike 

 by the gouty appearance of the second pereeopod and the problems 

 which required solving in regard to its mouth-organs ; while, 

 contrary to the custom of the family, the adult male appeared 

 to have at least one pair of maxillae. In the Asellota Thambema 

 amicorum, gen. et sp. n., seemed to be anomalous in the tribe by 

 having only four pairs of pleopods in the male and no uropods ; 

 its narrowly cylindrical shape was also unusual. 



This memoir will be published in the ' Transactions ' in due 

 course. 



Dr. F. E. Beddard, M.A., F.R.S., F.Z.S., Prosector to the 

 Society, read a paper on the Anatomy and Systematic Arrange- 

 ment of the Cestoidea, in which he gave an account of six species 

 of Tapeworms from Reptiles, belonging to the genus Ichthyotcenia 

 (s. 1.). 



Mr. E. DuKiNPiELD Jones, F.Z.S., F.E.S., communicated a 

 short paper containing the descriptions of thii-teen new species of 

 Butterflies of the genus Thecla which he had collected at various 

 localities in S.E. Brazil. 



