M. M. SCHEPMAN, LAND- AND FRESHWATER MOLLUSCA ETC. 193 



Fam. LlTTORINIDAE. 



Littorina Férussac. 

 1. Littorina carinifera Menke. 



Menke. Synopsis Moll. p. 141. 



Philippi. Abb. neuer Conch., Vol. II, pag. 227, Littorina, PL 5, fig. 22 — 24. 



v. Martexs. Si'iss- u. Brackw.-Moll. p. 198. 



New Guinea. Merauke, 1904. (Dr. Koch kg.) 

 Very variable in colour, from typical to nearly quite reddish or yellow. 



var. ex. col. pallescens Philippi. 



Philippi. Proc. Zool. Soc. 1845, p. T42, 



Tryox. Man. of Conch., Vol. IX, p. 244, PI. 42, fig. 30. 



Same locality. 1904. (Dr. Koch leg.) 



I followed V. Martens (1. c.) in his synonymy ; this species difters from L. scabra L., 

 of which TRYON considers it to be a variety, by the narrow columella, which is much broader 

 in L. scabra. 



Fam. Naticidae. 



Neverita Risso. 



1. Neverita ampla Philippi, var. petiveriana (Recluz) Reeve. 



Reeve. Conch. le. Vol. IX, Natica, fig. 17. 



Tryox. Man. of Conch. Vol. IX, p. 33, PI. n, fig. 91. 



New Guinea. Merauke, 1904. (Dr. Koch leg.) 



Under this name I mention a shell, not in perfect condition, agreeing rather well with 

 Tryon's figure, which is a copy of that of Reeve. The synonymy of the allied forms is 

 much in need of revision. For the moment I know no better way. 



Suborder Scutibranchia. 



RHIPIDOGLOSSA. 



Fam. Neritidae. 



Nerita Linné, 

 r. Nerita lineata Chemnitz. 



Chemnitz. Conch. Cab. Vol. V, p. 297, PI. 191, fig. 1958/9. 



v. Martens. Martini-Chemn. Conch. Cab. Ed. II, Nerita, p. 15, PL 1, fig. 3, 4; PL 4, fig. 12 — 15. 

 „ Sùss- u. Brackw.-Moll. p. 219. 



New Guinea. Mimika, March 20, 19 10. 



Numerous spécimens, which are rarely typical without any white spots on the ribs, 

 especially on the ventral side, forming links to the variety articulata Gould, it is in fact im- 

 possible to separate them. 



