CONTENTS. Vll 



Page 

 lUiring the Season 1890-!>1. lly J. Wooo-Mason, Superintendent 

 of the Tiulian Museum, and Professor of Comparative Anatomy in 

 th(> .Medical Collejje of JJenpal, and A. Alcock, M.B., Surgeon 

 I. M.S., Surgeon-Naturalist to the Survey 358 



LIII. Remarks on Australian Slugs. By T. D. A. Cockf.rixl, 

 F.Z.S., Institute of Jamaica 370 



LTV. On the Scale-like and Flattened Hairs of certain Lepido- 

 ptorous Larvse. By A. S. Packard 37"2 



LV. On the Ophiderea princops of GueuiSe and its utter dissimi- 

 larity in Structure and Pattern from the Ophideres princeps of Bois- 

 duval. By Authur G. Butlkr, F.L.S., F.Z.S., &c ^To 



LVI. On the Radula of Paliidestrina Jenkinsi, Smith, and that of 

 P. ventrosa, Mont. By B. B. Woodward, F.G.S., F.R.M.S 376 



LVII. Observations on two rare British Nudibranchs (Lomanotus 

 genci, Verany, and Huncockia euducti/lota, Gosse). By F. W. 

 Gamble, li.Sc, Assistant to the Bever Professor of Zoology, Owens 

 College, Manchester. (Plate XVII.') ■". 378 



LVIII. On two new Central-African Antelopes obtained by 

 Mr. F. J. Jackson. By Oldfikld Thomas 38o 



LIX. Descriptions of new Genera and Species of Pyralidfe con- 

 tained in the British-Museum Collection. By W. War.ren, M.A., 

 F.E.S 389 



LX. On the Anatomy and Embryology of the Phalangiidce. By 

 Victor Faussek 397 



LXI. Description of a Third Species of the Genus Ni/ctophilus. 

 By Oldfield Thomas 40o 



New Book : — L'Evolution Sexuelle dans I'Espece humaine. Par le 

 Dr. Henri Sicard, Doyen de la Faculty des Sciences de Lyon. . 407 



On the Genus Polychrysia of Hlibner (a Group of Plusiid Moths), 

 by Arthur G. Butler, F.L.S., F.Z.S., &c.; Dr. yon Lendenfeld 

 on the Central Cavity in Etiplectella, by E. A. Minchin ; On 

 some Specimens of Dendrodava Duhrnii, Weismann, bv Dr. 

 Eaffaello Zoia ; On the Development of Bythinia tentaculata, 

 by Dr. 1\. y. Erlanger, of the Heidelberg Zoological Institute; 

 On certain Reproductive Phenomena in Cirrhipedes, by M. A. 

 Gruvel ; On the Embryogeny of Sagitta, bv M. S. Jourdain. 



407-415 



NUMBER LIV. 



Steamer 



commanding. — Series j.±., i>o. o. \ju u lero-gesraiion in ivygon 

 Bleekeri. By A. Alcock, M.B., Surgeon I. M.S., Surgeon-Natura- 

 list to the Survey. (Plate XIX.) 417 



LXIH. Description of a new Species of Antedon from Mauritius. 

 By F. Jeffrey Bell, M.A. (Plate XVIII.) 427 



LXIV. Descriptions of new Genera and Species of Pyralidce con- 

 tained in the British-Museum Collection. By W. Warren, M.A., 

 F.E.S ". 429 



