34 



he expressed tlie opinion that these subspecies had been based 

 upon inadequate museum materiah 



Dr. William IS'icgll, F.Z.S., communicated some observations 

 on two new Trematode larvae found encysted in enormous numbers 

 in the mesentery of several Striped Snakes {Tropidonoius ordinatus 

 sirtalis) which had died in the Society's Gardens. He named these 

 forms, as neither could be referred to any adult species already 

 known. It could be safely predicted, however, that the second 

 species completed its life-cycle in the intestine of a bird, and from 

 this fact it could be inferred that the Striped Snake was eaten by 

 birds. 



Dr. W. T. Calman, F.Z.S., read a short paper describing a new 

 genus and species of the Cructacean Order Branchiura. 



A parasite of fishes collected by Spencer Moore, Esq., at 

 Corumba, Matto Grosso, Southern Brazil, was referred to a new 

 genus as follows : — 



Dipteropeltis, gen. n. 



DiiFering fi-om Argulus in having no spine on the preoral 

 papilla ; in having the antennules and antennse very minute and 

 imperfectly segmented ; in having no large spines or hooks on the 

 under surface of the carapace, body, or appendages ; in having no 

 furcal rami on the abdomen ; and in having the lateral wings of 

 the carapace greatly elongated. 



Genotype, D. hirundo, sp. n., with the characters of the genus. 



Mr. G. A. BouLEXGER, F.R.S., F.Z.S., read a paper entitled 

 " Second Contribution to our Knowledge of the Varieties of the 

 Wall-Lizard." This paper was a continuation of one published 

 in the Society's ' Transactions ' in 1905, and dealt chiefly with the 

 variations of Lacerta muralis in South-Eastern Europe and South- 

 Western Asia. It also contained a supplement to the first part, 

 thus completing an account of the varieties, of which about thirty 

 were regarded as more or less definable, the author endeavouring 

 to show the inconstancy of the characters adduced by some her- 

 petologists in assigning specific rank to a number of these forms, 

 connected by many gradations. Mr. Boulenger hoped to support 

 his statements by a number of photographic figures of specimens 

 selected out of the enormous material which had passed through 

 his hands in the course of his study of this polymorphic and widely 

 distributed lizard. 



This paper will be published in the ' IVansactions ' in due 

 course. 



A short note on the rare Briti.sh IS'udibranch Hancockia 

 eudaclylota Gosse was i-eceived from Sir Chai'les Eliot, K.O.M.G., 



