1855.] CJiusan Shells. 135 



MODIOLA SENHOUSIA, BeilSOll. 



Testa transverse oblonga, subalata, gibba, laBviuscula ; antice an- 

 gustata ; iutus iridescente ; epidermide olivacea, obscure radiata ; 

 ala natibusque strigis flexuosis spadiceis ornatis, basi leviter eniar- 

 ginata. Long. 1.2, Lat. 0.6 poll. 



Named by Dr. Cantor after the late Sir H. Le Fleming Senhouse, 

 who first observed it and pointed it out to him. This gallant 

 officer who commanded the naval forces in the attack on the city 

 of Canton which resulted in its submission to the British arms, and 

 who fell shortly afterwards a victim to his exertions in that epgage- 

 ment, was much attached to Natural History. 



" Sir H. Le Fleming Senhouse observed numbers of this shell on 

 board of one of the captured junks, where specimens were obtained 

 from the Chinamen, who had brought a large supply, preserved 

 in salt, from the east coast of Canton Province. Dr. Cantor 

 afterwards found two specimens on the mud among the fragments 

 of rocks which line the coast of Chusan. People at Tinghae were 

 well acquainted with the muscle. Judging from the heaps of shells 

 which lie about every house at Chusan, the people are great con- 

 sumers of shell fish, and it is amusing to see how expert they are in 

 opening bivalves, for which their inch-long nails are well adapted. 

 Dr. Cantor later observed this shell inhabiting the shores of the 

 Malayan Peninsula, Singapore and Pinang." — 



The form belongs to the subgenus Brachyodontes of Swainson. 

 A nearly allied, but much smaller, species occurs in the Creeks of 

 the Sunderbuns, which I propose to describe as M. variegata. 



Anodon gibbum, Benson. 



Testa fragili, ovata, tumida, antice rotundata, postice subalata, 

 supra angulata, extremitate postica subangulata, natibus concentrice 

 rugosis, rugis parallelis, subdistantibus, area postica radiis tribus 

 approximatis, leviter elevatis, rugosisque, munita ; margarita interius 

 albida versus apicem aurantio-tabescenti, versus marginem purpureo- 

 viridique splendide margaritacea ; margine fusco ; epidermide oli- 

 vacea, obscure radiata. Long. 2.0, Lat. 3.2 poll. 



This shell approaches in form and outward appearance so nearly 



T 



