CX)N'iENTS OF VOL. XVIII. 



[SIXTH SERIES.] 



NUMBER cm. 



Page 



I. Oil some new and rare British Crustacea. By Thomas Scott, 

 F.L.S., Mem. Soc. Zool. de France, Naturalist to the Fishery Board 

 for Scotland, and Andrew Scott, Fisheries Assistant, University 

 College, Liverpool. (Plates I. & II.) , . . 1 



II. Notes on the Parasitic Copepoda of Fish obtained at Plymouth, 

 ■with Descriptions of new Species. By P. W. Bassett-Smith, F.Z.S., 

 F.R.M.S., Surgeon R.N. (Plates III.- VI.) 8 



III. Some new Forms of American Rotifera. Bv Dr. Alfred C. 

 Stokes. (Plates VII. & VIII.) \ 17 



IV. Descriptions of some new Genera and Species of Ileterocera 

 from Central and Tropical South America. By Herbert Druck, 

 F.L.S. &c 28 



V. On some new Pierine Butterflies from Colombia. By A. G. 

 Butler, Ph.D., Senior Assistant-Keeper, Zoological Department, 

 British Museum 42 



VI. Notes frum the St. Andrews Marine Laboratorv. — No. XVI. 



By Prof. M-Lxtosh, M.D., LL.D., F.R.S., &c : 44 



VII. Descriptions of new Reptiles and Batrachians obtained by 

 Mr. Alfred Everett in Celebes and Jampea. By G. A. Boulenger, 

 F.R.S 62 



VIII. Animal Temperature as a part of the Problem of Evolution. 



By M. QuiNTON 04 



IX. On a small Collection of Lepidoptera sent from Nyasa in 181J5 



by Mr. R. Crawshay. By Arthur. G. Butler, Ph.D. '&c 67 



X. On a new Generic Distinction between the .Scorpions of the 

 Genera Scorpio and Palumnceus. By R. I. Pococic 75 



XI. The Bees of the Geiuis Andrena found in New Mexico. By 



T. D. A. Cockerell '. 78 



