CURRENT LITERATURE. 53 



shell-aperture small, and very close t(i hind end of mantle, no grooves from it to 

 the mantle edge as in U. kirkii. Mantle reticulate, the interstices of the 

 reticulation mostly blackish. Respiratory orifice 7^- mm. from anterior border. 

 Mucous pore smallish. Body not keeled, bluntish at end. Reticulations large, 

 big blackish grooves (of which there are about eleven, counting from dorsum to 

 sole on one side close to mantle), very little joined by transverse grooves, and not 

 symmetrically arranged'^on both sides. Sole, &c., ochreous ; head, back, and 

 mantle greyish ; palish lateral bands on the body, not coinciding with the grooves, 

 but crossed by them. No lateral ridges. A slight indicati(5n of dark lateral 

 bands on mantle. Nucleus of shell shiny, yellowish-white. 



In ;i young specimen the bands on the mantle are more pronounced, as figured 

 by lieynemann {Jahrb. d. Alal. Ges., 1884, pi. i). 



Delagoa Bay (H. A. Spencer), two specimens. 



I was very glad to have an opportunity of drawing up a full description of 

 U. flavescens from these specimens. I have no doubt that they are correctly 

 referred to Keferstein's species, and to the genus Urocyclus in the strictest sense. 

 U. kirkii. Gray from the Zambesi region, U. fiallesceiis, Ckll. from Natal, and 

 U. flavescens, Keferst. from intermediate localities, form a little group of three 

 allied but distinct species. — T. D. \. CocKEREl.i-, F.Z.S., Las Cruces, New 

 Mexico, U.S.A. 



CURRENT LITERATURE. 



In order to make the following Bibliography as complete as 

 possible, the Editor invites the co operation of British and foreign 

 authors. All communications should be addressed to the Editor, 

 the "Journal of Malacology," Mason College, Birmingham, England. 



MALACOLOGY IN GENERAL. 



Pilsbry, H. A.— Tryon's Manual of Conchology, ser. i., pt. 59 (vol. \v., pp. 

 133-180, pi. 18-42); ser. ii., pt. 35 (vol. ix.. pp. 113-160, pi. 29-40). 

 Philadelphia : Academy of Natural Sciences (Aug. 1894). 



In the marine series, part 59 commences the Tectihranchiata, and contains the 

 family Acticonid<e, in which are included all the allied forms which possess an 

 operculum and a radula of many rows of teeth, all of the same form. The 

 general'arrangenient followed is that of Fischer. The only new species is Btdlina 

 deshayesii from Reunion, which may be distinguished from its nearest ally 

 B. vitrca Pease, by the columella not being truncated at the base. Slips, such 

 as "Fischer," for "Fischer de Waklheim," and printer's errors, such as ''^Actecvi," 

 are too numerous. 



In the land series, Mr. Pilsbry continues his history, both conchological and 

 malacological, of the Helicoid groups. The present part deals with fourteen genera 

 including such important groups as Ckloritis, Thersites, and Papuiiia. Deiidio- 

 trochus is a new section (anatomy unknown) o{ Papidna, which may be distinguished 

 by the columella lip not being expanded or reflexed. The ty])e is P. helicinoides, 

 H. & J., and the distribution includes the Solomon Islands, New Hebrides, 

 Admiralty Islands, and New Irelanil. ^Vs their name imj^ilies, the species are 

 arboreal. — E. R.S. 



Simroth, H. — Bronn's Klassen und Ordnungen des Thier-reichs. Bd. III. 

 Mollusca. Leipzig, July 1894, pp. 241-336, pi. ix.-xiv. 



This part deals almost entirely with the PolyplacopJiora or Chitons. 

 Dr. Simroth gives an interesting resume of their morphology and ontogeny. 

 The distribution in both time and space is given. Commencing in the Silurian 

 they gradually increase in number up to the present time ; the oldest forms being 



