LITTORINID^. 147 



100 Port Canning', Penang, Singapore, Rangoon, Amherst and Akyab j 

 coll. H. F. Blauford, J. Dodgson, F. Stoliczka, and G. Nevill, Ksqrs. 



Some marked male and some female by Dr. Stoliczka. I 

 can see no difference ! 



15 Bombay ; coll. Rev. Fairbank, and W. T. Blanford, Esq. 

 6 Mauritius ; coll. G. Nevill, Esq. 



These last a slightly different form. 



var. sinensis. 



Littorina sinensis, Pliilippi, Abb. II, lS47,pl. VI, Jig. 23, China; suhvar.= 

 L. strigata, Lischke, Nov. Conch. Sup. Ill, 1870, Nagasaki, long. 9k 

 diam. 6 mil. 



3 Hongkong; coll. R. Hungerford, Esq. [8^ 5f]. 

 10 Anmungkang [Formosa] ; coll. R. Hungerford, Esq. 



The L. [Melarajjhe'] Uanfordi, Dunker, Malac. Blat., 1871, 

 Rockhampton, long. 12, diam. 8 mil., is apparently a close 

 ally? 



43. Littorina arboricola. 



Littorina arboricola, Reeve, Icon,, fig. 27, 1857, Singapore. 



20 Andamans ; eoll. Colonel E. S. Berkeley, and F. A. de Roepstorff, Esq. 



A smaller form than the type, somewhat approaching some 

 varieties of Littorina conica, Phil., and equally variably and 

 prettily coloured ; the spiral sculpture rather less developed. 



5 Singapore ; coll. Dr. F. Stoliczka. 



T am very loath to adopt this species as distinct ; the differ- 

 ences from L. scahra are evident at a glance ; L. pallescens, 

 Phil, and L. pMlippiana, Reeve, are the nearest I know ; the 

 more convex whorls, thinner substance, absence of keel at 

 the periphery, and the rather peculiarly " excavately appressed " 

 columella seem, however, characteristic ! In size and color- 

 ation all five of the above resemble the type. 



Long. 18 1, diam. 11 1 mil. 



