CONTENTS. Vil 



Fage 

 LIX. Notes on the Neuropterous Family Nemopteridcc. By 

 W. F. Kirby, F.L.S., F.E.S 456 



LX. On Equus Penricei, a Representative of the Mountain Zehra 

 (Eqims zebra, L.) discovered by Mr. W. Penrice in Angola. By 

 Oldfield Thomas 465 



LXI. New Peruvian Species of Conepatus, Phyllotis, and Akodon. 

 By Oldfield Thomas 466 



LXII. A new Free-tailed Bat from Central America. By Gerrit 

 S. Miller, Jr 470 



LXIII. Natural History Notes from H.M. Royal Indian Marine 

 Survey Ship 'Investigator,' Commander T. H. Heming, R.N., com- 

 manding. — Series III., No. 4. Some Results of the Dredging Season 

 1899-1900. By A F. McArdle, B A., M.B., Capt. I.M.S., Surgeon- 

 Naturalist to the Survey 471 



LXIV. Diagnoses of new Fishes discovered by Mr. J. E. S. Moore 

 in Lake Tanganyika. By G. A. Boulenger, F.R.S 478 



LXV. Note on Diatoms from Chincha Guano. By C. Meresch- 

 kowsky. (Plate XVI.) 481 



LXVI. Some new African Theraphosoid Spiders in the British 

 Museum. By R. I. Pocock 489 



LXVII. Descriptions of new Genera and Species of Hymenoptera. 

 By P. Cameron 495 



Neio Books: — Catalogue of Eastern and Australian Lepidoptera 

 Heterocera in the Collection of the Oxford University Museum. 

 Part II. Noctuina, Geometrina, and Pyralidina. By Col. C. 

 Swinhoe, M.A., F.L.S., F.Z.S., F.E.S. Pterophoridce and 

 Tineince by the Right Hon. Lord Walsingham, M.A., LL.D, 

 F.R.S., &c, High Steward of the University of Cambridge, and 

 John Hartley Durrant, F.E.S., Memb. Soc. Ent. France. — 

 Sexual Dimorphism in the Animal Kingdom. By J. T. Cun- 

 ningham, M.A. — Colour in Nature. By Marion I. New- 

 bigin 503, 507 



NUMBER XXXVI. 



LXVI1I. A suggested Origin of the Segmented Worms, and the 

 Problem of Metamerism. By II. M. Bernard, M.A. Cantab 509 



LXIX. On some little-known African Silurid Fishes of the Sub- 

 family Doradince. By G. A. Boulenger, F.R.S 520 



LXX. Descriptions of new Genera and Species of Hymenoptera. 

 By P. Cameron 530 



LXXI. Plankton Studies.— III. On Platydorina, a new Genus of 

 the Family Vblvocidte from the Plankton of the Illinois River. By 

 C. A. Kofoid, Ph.D. (Plate VII.) , 541 



LXXII. On the Luminous Organs of Selachian Fishes. By Run. 

 Burckhardt, Nat. Hist. Mus , S. Kensington 558 



