Transactions of the Zoological Society of London. 485 



we allow the difficulty of finding appropriate names, but these have nothing to 

 recommend them. Three Hemipodii are noticed, H. pugnax, Dussumerii, and 

 H. Taigoor, N. S., differing from H. pugnax in its more slender bill and white 



chin and throat. II. Descriptions of a few invertebrated animals obtained at the 



Isle of France. By Robert Templeton, Esq — Four animals are described, illus- 

 trated by a well-finished plate. III. On a remarkable species ofPteropine bat. 



By E. T. Bennet, Esq On several of the bats there seems to be cavities and 



pouches connected with a glandular apparatus ; and in the one now described, 

 there is a patch of long white hairs on each side of the neck, which Mr Bennet 

 suspects is connected with some similar arrangement. This patch is about one 

 inch in diameter ; the hairs are longer than those on the rest of the body, and 

 they spring in tufts from a common centre, diverging to either side. In one or 

 two other species, tufts somewhat similar have been observed, but in the pre- 

 sent animal the greatest developement of it appears ; while in most of them we 

 also have a modification of the form, and a difference in the number of the 

 grinders, which may ultimately be made the basis of characters for a separate 

 genus. This animal has been named Pteropus Whiteii, and two plates are de- 

 voted to it, one to a figure of the bat itself, another to the appearance of the 

 fur, taken from different parts of the body, greatly magnified. IV. Some ac- 

 count of the Crustacea of the Coasts of South America, with descriptions of New 

 Genera and species, founded principally on the Collections obtained by Mr Cum- 

 ing and Mr Miller. By Thomas Bell, Esq — A valuable paper, continued 

 from page 335 of Vol. I. but too long to be slightly noticed here. The first 

 paper was devoted to the illustration of the genus Cancer brought home by the 

 above named collectors, and three new species are figured and described, The pre- 

 sent communication is devoted to the Oxyrhynchi. They are illustrated by five 

 plates, containing representations of twenty-two species V. Some Observa- 

 tions on the Economy of an Insect destructive to Turnips. By William Yarrell, 

 Esq — Observations on the Athalia centifolice, which has, during the last year, 

 committed so much damage to the turnip crops both in England and Scotland. We 

 regret, however, that the range of this pest has not been more decidedly pointed out. 

 We do not know how far it has extended either to the south or north ; and it 

 also appears to have passed, as it were, over some districts, and again appeared. 

 On the Border counties of England and Scotland it was abundant, and committed 

 severe depredations. Figures of the perfect insect, and its different stages, by 



Mr Westwood, accompany this paper VI. Memoire sur une Nouvelle espece 



de poisson du Genre Histiophore, de la mer Rouge. Par M. E. Ruppell, M. D. 

 Membre Externe de la Societe Zoologique — The description of Hist, immacu- 

 latus, Rupp., which that gentleman considers distinct from the three previously 

 known species of the genus. The colours of this fish are of a uniform dull 

 blue above, changing to silvery on the lower parts ; the upper fins are blackish 

 blue, the lower greyish and all spotless, with the exception of a dark mark on 

 the pectoral at its lower part. The formula of the fins is — 

 P. 1 + 19 V. 3 + 0, D. 47 + 0, + 7. A. 10 + 0,0 + 7. C 5 + 17 + 5. M. 13. 7. 



VII. On the genus Octodon, and on its relations with Ctenomys, Blain. 



and Poephagomys, F. Cuv. including a Description of a New Species of 

 Ctenomys. By E. T. Bennet, Esq. F. L. S. &c — An excellent paper, entering 

 in Mr Bennet's own manner, into the relations of the genera mentioned above, 

 and illustrated by good figures of Octodon Cummingii, and Ctenomys Magella ■ 

 NO. V. I i 



