174 COCHLOSTYLA-PACHYSPH^ERA. 



Conch. Syst. ii, t. 166, f. 25; Conch. Icon., f. 71. Cochlostyla 

 balteata SEMPER, Reis. Landmoll., p. 197, t. 18, f. 24 (dentition.) 



Allied to C. sphcerica, but the ground-color is paler, the banding 

 mainly green ; the lip is narrower and the columella is colored. 

 There is considerable variation in contour, figs. 91, 92 representing 

 the most depressed specimen before me. This example has several 

 grass-green bands on the base. The coloring of this species is not- 

 ably variable. The principal patterns are figured on pi. 39. 



The apical whorls are generally pink ; but when they are white, 

 the columella also is light-colored. 



A, 



C. ANNULATA Sowerby. PL 39, figs. 85, 86, 87, 88. 



Imperforate, solid, globose-turbinate ; ground-color yellow, usually 

 having a broad brown or purple-brown zone at the circumference, a 

 pink line or a yellow band at the suture, and a streak of reddish- 

 brown back of the lip and around the columella. Lip very little 

 reflexed, very blunt and thick. 



The surface is very lightly striatulate ; the banding is very vari- 

 able, but the ground-color is always yellow. Apex obtuse, buff or 

 pink. Whorls 5, the last a little deflexed in front. Aperture white 

 within, half-round, oblique; lip thickened, flattened, its face usually 

 pink, its reverse red. 



Alt. 25, diam. 21 mill. 



Alt. 20, diam. 17 mill. 



Provinces of South and North Ylocos, Luzon, Philippines. 



H. annulata SOWB., P. Z. S. 1840, p. 135. PFR., Mon. i, p. 227 ; 

 Conchyl. Cab. p. 302, t. 51, f. 5-8. REEVE, Conch. Icon. f. 110. 

 Cochlostyla annulata SEMP., Reis. Landmoll. p. 197. 



Closely allied to C. iloconensis, differing mainly in the much 

 more narrowly reflexed and much more obtuse lip. 



The usual form (fig. 88) has a wide peripheral girdle, a sub- 

 sutural line of pink or band of yellow, and back of the lip there is 

 a broad red-brown streak. Some examples have no color-bands, 

 the suture being bordered with white, the lip streaked as usual (fig. 

 87). Specimens are also found having no color bands whatever, 

 being of a uniform yellow color ; lip white, its reverse without a 

 streak. One such is before me, and Semper mentions another. 



This is one of the most abundant snails of South and North 

 Ylocos. 



