

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



var. artiadata Gould. 



Gould. Proc. Bost. Soc. Nat. Hist. Vol. II, 1847, p. 220. 



v. Martens. Mart.-Chemn. Conch. Cab., Ed. II, Nerita, p. 107, PI. 13, fig. 17, 18. 



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



Thèse spécimens agrée radier well with the quoted fig. of V. MARTENS, but, as stated 

 above, the limits are quite effaced between type and var. 



POLYPLACOPHORA. 



Fam. Chitonidae. 



Acanthopleura Guilding. 



1. Acanthopleura spinigera Sowerby. 



Sowerby. Ann. & Mag. Nat. Hist. 1840, p. 2S7. 

 Pilsbry. Man. of Conch. Vol. XIV, p. 221, PI. 48 



New Guinea. Etna Bay, ^04. (Dr. Koch leg.) 



2. Acanthopleura spinosa Bruguière. 



Bruguière. Journal d'hist. nat. Vol. I, p. 25, PI. 2, fig. 1, 2. 

 Pilsbry. Man. of Conch. Vol. XIV, p. 220. PI. 45, fig, 80 — S7. 



New Guinea. Etna Bay, Nov. 7, 1904. (Dr. Koch leg.) 



Chiton ? 



Amongst the mollusca collected by Dr. KûCH is a spécimen, which is quite rubbed 

 off, no sculpture being perceptible, as it is a single spécimen, I could not even try to fi-Y its 

 generic position, it is rather large, the length of the somewhat contracted animal being more 

 than 50, the breadth 38 mill. 



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



PELECYPODA. 



Fam. PlNNlDAE. 



Pinna Linné. 



1 . Pinna hanleyi Reeve. 



Reeve. Conch. Je, Vol, XI, Pinna, fig. 15. 

 New Guinea. Metu Debi, Huraboldt Bay, 1903. 



The spécimen is relatively broader than Reeve's figure, but otherwise it agrées very 

 well, long 19, lat. 12 mill. (Reeve. 19:9)- One spécimen only, which seems insufiieient to 

 create a var. latior. 



2. Pinna mutica Reeve. 



Reeve. Conch. le, Vol. XI, Pinna, fig. ^^. 

 New Guinea. Humboldt Bay, May 28, 1903. 

 A gigantic spécimen with a length of more than 45 mill. (Reeve 22); there are some 



