BY THE REV. J. E. TENISON-WOODS, F.G.S., &C. 809 



besides having numerous granular sulci all over the shell. There 

 is an xxnmistakable figure of this little species in Wood's Index 

 Testaceologicus, PI. 34, Fig. 131, Hanley's Edition, London, 1856. 

 The species is common throughout the rivers and streams of the 

 Philippines. 



6. Melania puscata, Born. A narrow subulate species of ten 

 whorls, obsoletely tubercular at the upper portions of the spire. 

 Whorls 10, with a thick blackish-olive periostraca, with rusty- 

 erosions ; mouth white ; outer lip very sinuous. 



There are many other fluviatile species to be found in connection 

 with the river and lake of the volcano, but these are all I 

 succeeded in recognizing. The estuarine shells, unfortunately, be- 

 came mingled with collections from other portions of the islands, 

 but as well as I can remember, I only succeeded in procuring few 

 species, one of which is certainly Atcricula auris midcB. 



LAND MOLLUSCA. 



One or two shells of the genera Helix and Bulimus were found 

 on the volcano of Taal, the Helix being possibly a variety of the 

 large H. maxima. The extraordinary richness of these islands 

 in Helicidce is well know. They are inferior in number only to 

 those of Lusitania and the Antilles, and vastly superior in size 

 and beauty of colouring. The Oyclostomidce are probably equal 

 in number to those of India. Nearly all the species are confined 

 to particular islands, but the form and colouring vary but slightly, 

 so that possibly they are no more than local varieties (Dr. Wood- 

 ward). 



The Bidimi of the Philippine Islands, which ai-e very numerous 

 and of large size, chiefly belong to one type, re^jresented by 

 B. pijthoyasta, Per., B. bicoloratus, Lea, B. lignarius, Fir., 

 B. fulyetrum, Brod., B. nimhosus, Brod., and others. The shells 



