CURRENT LITERATURE. I43 



bncefluila, and Nossis (gen. nov.) iiidica. This last genus is closely related to 

 Sanila. A welcome contribution to the anatomy of the little known genus 

 Adcsia is supplied in the account of the structure of the new species, which is 

 described in some detail. 



RidewOOd, W. G. — On the Structure of the Gills of Lamellibranchia. Proc. 

 Roy. Soc, 1902, vol. lx.\, pp. 499, 500. 



Ur. Ridewood has examined the structure of the gills in 215 species of 

 Lamellibranchia, belonging to 118 genera. He is of opinion that the minute 

 structure of the gill, like the gross, cannot, except in a very broad way, be 

 regarded as an indication of genetic affinity. Three main types can be recog- 

 nised. Tlie first, found in the Niiciilidac and Solcuomyidae, is characterised by 

 the mutual freedom of the gill lamellae. For these the author proposes to 

 retain the term Protobranchia (Pelseneer). In the remaining two types the 

 filaments are held in juxtaposition by interlocking cilia, which occur in circular 

 patches on their anterior and posterior faces, or by regularly arranged 

 horizontal bars of cellular tissue. For the former type the author proposes the 

 term eleutherorhabdic, and for the latter synaptorhabdic. 



We hope to give a further and longer review when the complete paper is 

 published. 



Gude, G. K. — A synopsis of the genus Strcptn.vis and its allies. Proc. Malac. 

 Soc. Lond., 1902, vol. v, pp. 201-244, pi. iv. 



Mr. Gude here gives a very valuable synopsis of the genera Stirptaxis, 

 Gray (with 165 species), Hapfia, Bourg. (with 13 species), and Scolodonia, 

 Doring (with 17 species). S. leonciisis, Pfr., S. cburiicns, Pfr., S. gibbosiis, Pfr., 

 S. siniiosiis, Pfr., S. anceyi, Mab., S. snbbulbtdns, Mlldff., and S. diplodon, Mlldff., 

 are figured. 



Sykes, E. R- — The Zoological Record, 1901, vol. xxxviii. Record vii. Mollusca. 

 pp. 102, London, 1902. 



We heartily welcome another year's Record, which still remains the most 

 complete and thorough work of its kind. 



Owing to ill-health, Mr. G. C. Crick has not been able to assist this year, 

 and Mr. S. Pace has taken over a share of the work. A few alterations have 

 been made which will still further facilitate reference. The Anatomical and 

 Biological headings have been re-classified, and under the heading " Geologi- 

 cal," the Teritary entries have been arranged geographically, finally a paragraph 

 has been inserted giving details respecting Biographies, Obituary Notices, etc. 



Sykes, E. R.— The Zoological Record, 1901, vol. xxxviii. Record viii. 

 Brachiopoda. pp. 12, London, 1902. 

 No less than 98 titles of papers, etc., are given, which is by far the largest 

 number for many years past. 



Ihering", H. von. — As Melanias do Brazil. Rev. Museu Paulista, 1901 [1902], 

 vol. V, pp. 653 — 681. figs. I — 3. 

 The author describes and figures the following new species : Doryssa 

 schiippi, D. rixosa, and a nev;' variety — aragiiayaua — of Hcmisitiiis teiittilabris, 

 Rve. The distribution in space and time is discussed, and a key to the genera 

 Doryssa and Hemisimis is given. In all 33 species are recorded. 

 Suter, H.— On the Land Mollusca of Little Barrier Island. Trans. N. Z. Inst., 

 1901, vol. xxxiv, pp. 204 — 206. 

 Mr. Suter records twelve species from this island. 



