226 Annals of the South African Museum. 



The materials upon which these names are based are for the 

 most part unsatisfactory, and in several cases consist of small 

 shells which were figured by Sharpe, though considered by him 

 to be unfitted for specific determination. Sanguinolaria ? africana 

 is a small shell of doubtful generic position, and the species may 

 perhaps be founded upon an immature individual. Turbo stoivianus 

 has never been figured, and I have not been able to find the 

 specimens described by Tate. Phasianella ? sliarpci is a minute 

 shell, and its generic position cannot be determined. Chemnitzia 

 africana, founded upon a single individual, has not been figured, 

 and I have not found the type-specimen. Ampullaria ? ignobilis 

 is the name given by Tate to a very small shell figured by 

 Sharpe, but the specimen cannot be found and its generic position 

 is quite uncertain. The three forms ascribed by Tate to Actceonina 

 are represented by specimens of minute dimensions figured by 

 Sharpe. These determinations, like those above mentioned, are 

 quite unsatisfactory ; the specimens are probably immature, and 

 in any case it is evident that more than a single genus is 

 represented. 



A comparison of the names of the Mollusca in all the above 

 lists with those in the list given by Mr. E. B. Newton in 1896 * 

 shows an apparent want of agreement in some few items, and 

 for convenience of reference these may be briefly noted here. 

 Bcineckia subanceps of Mr. Newton's list is the shell I have 

 referred to Hoplites. In place of Action (for A. atherstoni} I 

 have been led to use Actceonina, since the shells in question show 

 no trace of plication on the columella ; it has also been possible 

 to show that Turbo baini must now be considered as a synonym 

 of Turbo atlicrstoni. To substitute the name Turbonilla in place 

 of Tate's Chemnitzia must be regarded as hazardous in view of 

 the fact that the original determination was unsatisfactorily estab- 

 lished. In place of Cyprina, Mr. Newton used Arctica, a name 

 which is unfortunately preoccupied, even were there any valid 

 objection to the employment of the familiar and long-established 

 name Cyprina. Ceromya papyracea is now shown to be referable 

 to Thetironia. Tate's Crassatella complicata, as pointed out by 

 previous writers, belongs to the genus Ptycliomya, and the 

 emendation to Crassatellites is therefore incorrect. Cucullcea can- 

 ccllata in Mr. Newton's list is a synonym of Cucullcea kraussi 

 Tate, and was no doubt retained through oversight. In the case 

 of Cucullcea ? joncsi and Parallelodon atherstoni, which may be 



* Newton (2), pp. 150, 151. 



