SYKES : MALACOLOGICAL NOTES. 3 



The brothers Adams '^' in March, 185G, used the generic name 

 Torlulosa in place of Cataulus, giving for the first time a diagnosis of 

 Tortulosa. 



In 185S Pfeiffer'*'' under liis genus f'a/fl?/^M.s^ states " Species tv^icae 

 omnes ex insula Ceylon allatae sunt, unica ex insulis Nicobaricis, cha- 

 racteribus aberiantibus praedita, ab illis separari potest," and divides 

 Cafaiilus in the following way : — 



A. Abnormes {Tortulosa, sect. Braclii/poiiis, Gray 



inProc. Zool. Soc, 1847, p. 177) "^ § 1 Nr. 1. 



B. Norma les §2Nr. 2-13. 



and in his second supplement (p. 87) he states : Sections A. Torfiilnsa, 

 Ctray ;B. Cataulus, Pfr., a course which he equally follows in his third 

 supplement (p. 1-40). 



In 1897, Dr. Kobelt and Herr von MoellendorfT '"' used " Cataulus, 

 Blanford "" for the whole group, and in the following year I carelessly 

 stated that Turbo tortuosus might stand as the type. 



Last year Dr. Kobelt "*' suppressed Cataulus altogether on the 

 ground that it was a synonym of Tortulosa, and proposed a new sub- 

 genus of Tortulosa, which he called Eucatavlus, with Cataulus temple- 

 mani as the type. 



From the foregoing facts and especially considering that no type of 

 Cataulus was originally named, and the sub-division of the group by 

 Pfeiffer in the Supplements to the " Mon. Pneum.,'" I think that the new 

 name is unnecessary, and that even if Cataulus and Tortulosa be not dis- 

 tinct as genera, still the former may weW be used as a section of the 

 latter. 



Gen. Ree. Moll,, vol. ii, p. 28.5. 

 Mon. Pneum. Suppl. I, p. 87. 

 NacTirbl. Deutsch. Malak. Qes., p. 141. 

 Das Thierreich, Cijdophoridae, p. 281. 



