106 THE MARQUIS OF TWEEDDALE ON [Jan. 15, 



suffused with a pinkish tint, evidently marking a period of cessation 

 of growth, the colour having stained that part of the shell which then 

 formed the lip of the aperture. 



The uppermost dark band of the last whorl is situated a little above 

 the middle, and passes just above the suture, and can be traced in part 

 almost to the apical whorl. Adjoining this thin line there is a second 

 thread-like one which borders the sutural edge of the whorls. The 

 median band is very broad, frequently more than twice as wide as 

 that above it, and encircles the whorl somewhat below the periphery ; 

 and the basal one, equally broad with the preceding, winds around 

 the rounded margin of the umbilicus. 



Helix (Camena) congener. 



Other allied forms of this species are H. luhuana, Sowerby, which 

 seems to be distinct from H. peliomphala, H. simodae, Jay, and H. 

 kerklotsi, Martens. 



Whether these five are good and distinct species or only local forms 

 of one and the same, of which intermediate gradations have not yet 

 been observed, remains yet to be ascertained ; but, so far as our 

 present knowledge extends, the differences of form, texture, banding, 

 &c, warrant the presumption that they are specifically distinct. 



The series of specimens upon which the above description is based 

 has been kindly placed in my hands for examination by Mr. G. B. 

 Sowerby, junior, who has presented two of them to the national 

 collection. 



10. Contributions to the Ornithology of the Philippines. — 

 No. IV. On the Collection made by Mr. A. H. Everett 

 in the Islands of Dinagat, Bazol, Nipah, and Sakuyok. 

 By Arthur, Marquis of Tweeddale, F.R.S., President 

 of the Society. 



[Eeceived December 11, 1877.] 

 (Plates VI.-VIII.) 



The four islands in which Mr. Everett collected the birds of 

 which I propose to give an account are situated to the north of the 





