38 THE ZOOLOGIST. 
and Tanaella, among the Tanaida, and Anthelura, Hyssura, Cyathura and 
Calathura, among the Anthuride), were described. 
Mr. G. E. Dobson exhibited a diagram designed to illustrate the 
evolution of the Mammalia, after Huxley. 
Prof. F. Jeffrey Bell read the fifth of his series of Studies in Holothu- 
roidea. The present paper gave some further information on the characters 
of the Cotton-Spinner, Holothuria nigra. 
Mr. J. Bland Sutton read a paper on the parasphenoid, the vomer, 
and the palato-pterygoid arcade of the vertebrated skeleton. Mr. Sutton 
came to the conclusion that the parasphenoid of Fishes was the homologue 
of the vomer of Mammals. 
Mr. G. A. Boulenger read some notes on the Edible Frogs introduced 
into England, which he referred to two forms—Rana esculenta typica of 
France and Belgium, and R. esculenta lessone of Italy. 
A communication was read from the Count T. Salvadori containing 
remarks on certain species of Birds from Timor Laut. 
A communication was read from Mr. E. P. Ramsay, containing the 
description of a supposed new species of Flycatcher from New Guinea, 
proposed to be called Rhipidura fallax. 
Mr. F. Day read the third of his papers on races and hybrids among 
the Salmonide. The author gave an account of how the Salmon, which 
had been raised in freshwater at Howietown, had been artificially obtained ; 
and pointed out that all the hybrids between the Salmon and the Trouts 
had proved sterile, while the hybrids between the Trouts and the Chars 
had proved fertile —P. L. Sonarer, Secretary. 
Entomo.oetcaL Society oF Lonpon. 
August 6, 1884.—J. W. Dunnine, Esq., M.A., F.L.S., &c., President, 
in the chair. 
Mr. F. P. Pascoe exhibited some curious white puffy balls he had found 
on a vine growing ina greenhouse when staying at St. Helier’s, Jersey, 
doubtless the work of Coccide, and probably belonging to Lecanium (Pul- 
vinaria) vitis. Prof. C. V. Riley confirmed the determination. 
Mr. J. H. Durrant exhibited specimens of the three British species of 
Blaps (B. mortisaga, L., B. mucronata, Latr., B. similis, Latr.), all lately 
captured in the neighbourhood of Hitchin. 
Mr. W. L. Distant exhibited an ordinary specimen of Cilia spinula, 
Schiff., and remarked that though its peculiar position when at rest had 
been described, it had not been noticed that it thus perfectly resembled 
a species of the homopterous genus Fata. Its anterior wings, vertically 
raised, with the upper surface exposed, are only visible, the antenne being 
hidden and the head depressed, so that it appears truncate in front. Familiar 
