466 



Records of the Indian Museum. [Vol. XXII, 



Corbicttla 



Spliaerhim 

 Pisidiam 



Glaucomviidae. 

 Glaucomya 



PSAMOBIID^E. 

 Elizia 



Psniamotellina 

 Asapliis 



SoLENIDAE. 



Siliqiia 

 CulteLlus. s.s. 

 Subg. Pharella 



Pholadidae. 



Teredo 



Subg. Cuplius 



Species described or 

 t'on. Marten's list | recorded since von Mr. den Doop's 



fi8Q7). 



Marten's paper in 

 1897. 



collection. 



moltkeaiia, fiimida 

 diicalis, trapezoi- 

 dea, angulifera. \ subrostrata. 

 piiUata. /aciisfris. 

 gibba. 



snmatraitum. 



siimafrensis. 



orbiciiJaris. 



palleiii. 



rugosa. 



radiafa, ivinteriana. 



atteiitiatiis. 



javanicns 



arenaria 



gusiairana. tobae, \molfkeana,trapexoidea, 

 sulcata, moussoni , \ angiil'fera, piillata. 



ceciliae (sp. nov. ). 



javainciis 



arenana. 



Family Auriculidae. 



Genus Pythia, Link. 



Specimens of three species of this genus are represented in 

 the collection. Of these P. nndata was the only form hitherto 

 collected from Sumatra. The other two species P. trigona and 

 P. plicata, though known from the adjacent islands, had never 

 been taken in Sumatra. P. pantherina has also been recorded from 

 Sumatra by von Martens, but is trot represented in the present 

 collection. 



Pythia trigona (Troschel). 



1897. Pythia trigona, von Martens, op. cit., pp. 130, 131, pi. viii, fig. i. 



This widely distributed species had, as noted above, been 

 never recorded from Sumatra before. It is represented in Mr. den 

 Doop's collection by a few specimens collected in the mangrove- 

 swamps at Belawan (Deli) and at a pematang ' in the estate of 

 Batang Kwis (Serdang) also near the mouth of the Soengei Batang 

 Kwis (Serdang). All the specimens are quite typical. 



I A pematang is an old sandy strand ridge along the coast formed by ele- 

 vation of the land as yet situated in the mangrove-swamps or (older) fresh-water 

 swamps near the coast, [den Doop]. 



