550 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 45. 



without tooth; parietal wall provided with a thick cord which joins 

 the outer and basal lips and practically renders the peristome com- 

 plete. The peristome is white, excepting at the peripheral angle 

 where the brown band continues over it. 



Type.— Ca.t. No. 252067, U.S.N.M. This and 37 specimens were 

 collected by the Hon. Dean C. Worcester on Olanivan Island (Saran- 

 gani group). The type has 4^ whorls and measures: Altitude, 9.5 

 mm.; greater diameter, 24 mm. ; lesser diameter, 20.3 mm. 



Ten additional specimens taken at random yield the following data: 



This species is nearest related to Ohhina saranganica Hidalgo, 

 which comes from Sarangani Island. This is a much larger race, a 

 specimen of 4.3 whorls measuring: Altitude, 13.4 mm.; greater diame- 

 ter, 36.4 mm.; lesser diameter, 29.7 mm. 



COCHLOSTYLA CALUSAENSIS, new species. 

 Plate 43, figs. 9, 10, 12-14. 



Shell depressed, conic to ovate, marked by fine, decidedly retractive 

 lines of growth and very fine, closely spaced spiral striations. Ground 

 color of the first three whorls white, while that of the subsequent 

 whorls is suffused with sage green on the base, with a band of greenish 

 color in front of the suture on the last whorl which leaves a whitish 

 border on both sides of the median brown band, or the whole ground 

 color may be nearly white if slightly weathered. Beginning with 

 the second whorl, a faint broad brown spiral band makes its appear- 

 ance on the iTiiddle of the space between the summit and the 

 periphery of the whorls, increasing steadUy in intensity until it 

 acquires a deep chocolate brown on the last turn. A second brown 

 band, equaling the above in width, encircles the whorls immediately 

 anterior to the periphery. Aperture moderately large; columella 

 oblique, white; peristome reflected, white. Color bands within the 

 outer lip as intense as on the exterior. 



Six specimens of this species were collected by the Hon. Dean C. 

 Worcester on Caluga Island (Cagayanes). 



Type.— Cut. No. 252069, U.S.N.M. 



