CONTENTS OF NUMBER b^.-^Eighth Series. 



Page 

 LVIII. Notes on the Apidce (Hymenoptera) in the Collection of 

 the British Museum, with Descriptions of new Species. By 

 Geoffeey Mbade- Waldo, M.A 461 



LIX. Observations on living Gorgonias (Oorgonia verrucosa) 

 occurring in the English Channel. By J. Stuakt Thomson, Ph.D., 

 F.L.S., F.E..S.E., Lecturer and Senior Demonstrator in Zoology, 

 Victoria University of Manchester , 479 



LX. Descriptions and Records of Bees. — XLVII. By T. D. A. 

 CocKEEBLL, University of Colorado 484 



LXI. A Revision of the Poeciliid Fishes of the Genera Rivulus, 

 Pterolehias, and Cynolebias. By C. Tate Regan, M.A 494 



LXII. New Species of Heterocera from Costa Rica. — XVIII. By 

 W. ScHAus, F.Z.S 509 



LXIII. Notes on Fossorial Hymenoptera. — XI. By Rowland 

 E. TuKNEE, F.Z.S., F.E.S 533 



LXIV. Brief Diagnoses of Eight new Petalia^ with a List of the 

 known forms of the Genus. By Knxjd Andeksen 546 



LXV. On Specimens of Cephalodiscus nigrescens supposed to have 

 been dredged in 1841 or 1842. By W. G. Ridewood 550 



BIBLIOGRAPHICAL NOTICES. 

 Recent Foreign and Colonial Natural History Periodicals 555 



Records of the Western Australian Museum and Art Gallery. 



Edited by the Director, Bernard H. Woodward. Vol. I. Part 2. 556 



Distribution and Origin of Life in America. By Robert Francis 



SCHAEFF, Ph.D., B.Sc ib. 



*^* It is requested that all Communications for this Work may be addressed 

 post-paid, to the Care of Messrs. Taylor and Francis, Printing Office, 

 Red Lion Court, Fleet Street, London. 



