150 CURRENT LITERATURE. 



Lankester, E. Ray. — Notes on the Ccelom and Vascular System of Mollusca 

 and Arthropoda. Quar. Journ. Micro. Sci., 1893, xxiv., pp. 427-32. 



Pelseneer, Paul. — L'Asymetriedes Mollusques univalves. Journ. de Conchyl., 

 1892, pp. 229-33. 

 Dr. Pelseneer continues the discussion on the asymmetry of univalves, with 

 particular reference to the operculum of Atlanta, and the dextrosity and sinis- 

 trosity of Cavolinia. 



Thiele, J. — Ueber die Kiemensinnesorgane der Patelliden. Zool. Anz., 1893, 

 xvi., 412, pp. 49, 50. 

 The author finds a patch of modified sensory epithelium on the side of the 

 body anteriorly, between mantle and foot, in Patina pellucida, Patinella deaurata, 

 and Patella am/lea; and briefly describes its relations from serial sections through 

 P. pellucida. The sense-organ is supplied with a slender nerve from Spengel's 

 olfactory ganglion, and is thus put into the same category as Spengel's olfactory 

 organ (ospli radium), of which, indeed, it may be a portion. 



VARIATION. 



Belt, Anthony. — On the Band and Colour Varieties of H. nemoralis and 

 H. kortensis in Ealing and Hanwell. Kept, and Proc. Haling Micro, and 

 N. II. Soc. , 1892, pp. xvii.-xviii. 



Ford, John. — Description of a new form of Cypnea. Naut., 1893, vi., p. 112. 

 Cypnea cruenta, Cmel., var. now greegori, 



Moore, J. — Helix nemoralis with an umbilicus. Sci. Goss., 1893, p. 93. 



Moore, J. — Variety of Vitrina pellucida. Sci. Goss , 1893, p. 93. 



Cockerell. T. U. A. — On a new species of Aplysiidce from Jamaica. Ann. 

 and Mag. N. II., 1893, pp. 218-20. 



Cockerell, T. D. A. — Avion occidentalis : an apparently new species. Journ. 

 Conch., 1893, P* '9 2 - 



Collinge, Walter E. — On the Variety cimreo-niger, Wolf, of Limax maximus, 

 L. Ann. and Mag. N. H., 1893, pp. 286-7. 



Dautzenberg, Ph. — Descr. d'un Perideris nouv. (/'. lechatelieri), provenant 

 du Dahomey. Journ. de Conchyl., 1892, p. 297. 



Drouet, H. — Description de deux Unios nouveaux du bassin de l'Oronte. Rev. 

 Biol, du Nord de la France. 1893, pp. 285-88 and figs. 

 U. barroisi, near U. episcopalis, and U. tinctus. 



Fischer, P. and H. — Diagn. d'esp nouv. de Moll. Cephalopodes recueillis dans 

 le cours de l'Exped. scien. du Talisman (1S83). Journ. de Conchyl., 1892, 

 pp. 297-300. 



Diagnoses of two new Octopus (sponsalis and ergaslicus) from N.W. Africa 

 (Talisman collection), with woodcuts of the anterior extremities of the copulating 

 arm. 



CLASSIFICATION, NOMENCLATURE, NEW GENERA, 

 AND SPECIES. 



Ancey, C. F. — Remarques sur quelques especes nouv. d. genre Buliminus avec. 

 descr. de plusieurs especes now de ce genre. Bull. d. Soc. Zool. de France, 

 1893, xviii., pp. 35-40. 



