iv CONTENTS. 



Page 

 XITI. A Review of South-African Land-Mollusca belonging to 

 the Family Zonitidcp. By Lt.-Colonel II. H. Godwin-Austen, 

 F.R.S. &c. (Plates I.-VII.) 122 



XIV. Descriptions and Records of Bees. — XLI. By T. D. A. 

 CocKERELL, University of Colorado 139 



XV. Descriptions of new Species of TyralidcB of tlie Subfamily 

 Tt/raastince. By Sir George F. Hami'SON, Bart., F.Z.S., &c 149 



Note on the Date of PubUcatiou of the Works of .Jacob Huebner on 



the Lepidoptera, by C. Davies Sherborn and Louis B. Prout .. 175 



NUMBER 50. 



XVI. Descriptions of new Genera and Species of Oriental 

 liomoptera. By W. L. Distant 181 



XVII. Notes on Fossorial Hymenoptera. — VI. By Rowland 



E. Turner, F.Z.S., F.E.S 194 



XVIII. New Species of Ileterocera from Costa Rica. — XIII. 



By AY. ScHAUS, F.Z.S 202 



XIX. Preliminary Descriptions of Three new Species of Thij- 

 sanoptera. By Richard S. Bagnall, F.L.S., F.E.S 214 



XX. The Osteology of the Teleostean Fisht-s of the Order 

 Opisthomi. By 0. Tate Regan, M.A 217 



XXI. A new Gerbil from British East Africa. By Guy Dollman. 219 



XXII. Descriptions and Records of Bees.— XLII. By T. D. A. 

 CooKERELL, University of Colorado 220 



XXIII. Descriptions of new Arachnids of the Orders Solifug.ne 

 and Pedipalpi. By S. Hirst 229 



XXIV. Descriptions of new Species of Cerithium, Chmculus. and 

 Suletellina. By G. B. Sowerby, F.L.S 237 



"^^ XXV. A new Genus of Opossums and a new Tuco-tuco. By 

 Oldfikld Ttiomas 2-"59 



XXVI. Descriptions of now Species of ri/ra/hhe of the Subfamily 

 ri/niiisdm/;. By Sir Georgk F. Hampson, Bart., F.Z.S., L^te. . . .". 242 



— » XXVIl. Mammals of the Panyam Platonu, Nortliorn Nigeria. — II. 

 By Oldfikld Tuo.mas 2G9 



Proceedings of tlie Geological Society 274 



