482 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Shell elongate-ovate, rather slender. The early whorls dark, the 

 middle ones flesh-color with a brownish tinge, the last one dark brown. 

 Upon this ground color are placed slightly retractively slanting ful- 

 gurations of pale flesh-colored axial bands having a yellowish tinge. 

 The aperture is white with a livid tinge. The expanded peristome is 

 bounded on the edge by a purplish zone, which also marks the edge 

 of the parietal callus, the rest of the callus agreeing with the interior 

 of the aperture. The postnuclear whorls are feebly rounded, ap- 

 pressed at the summit, and marked by very slender, retractively curved 

 axial threads, which are closely approximated and decidedly flattened, 

 so that the spaces between them appear as mere lines. This sculpture 

 extends also over the base. In addition the entire surface of the shell 

 is marked by numerous microscopic, rather closely approximated 

 crisscross lines, which pass obliquely over the lines of growth and give 

 to the surface of the shell, when viewed under high magnification, a 

 finely fenestrated appearance. The aperture is broadly ovate, 

 decidedly oblique; the peristome is broadly expanded and reflected. 

 The peristome of the inner lip is widest at its base, where it continues 

 over the parietal wall as a heavy callus. 



The type (U.S.N.M. no. 382972) was collected by Col. Edgar A. 

 Mearns on Mount Halcon, Mindoro. It has the early whorls broken; 

 the four remaining measure: Length, 61.8 mm; greater diameter, 28 

 mm. 



COCHLOSTYLA (CHRYSALLIS) ELECTRICA (Reeve) 



Shell ovate. The first postnuclear whorls bluish, the rest flesh- 

 color with the posterior half brown, which becomes the ground color of 

 the rest of the turns. This ground color is covered by a periostracum 

 of varying thickness and usually of yellowish tinge through which the 

 axial fulgurations show. The aperture is brilliantly bluish white; 

 peristome dark purplish brown at the edge gradually blending into the 

 white of the interior. A zone of this color also covers the outer edge 

 of the parietal callus, thus completely framing the aperture. The 

 whorls are moderately rounded, appressed at the summit, and marked 

 by fine retractively slanting lines of growth and numerous microscopic 

 crisscross lines, which cross the lines of growth obliquely and give to 

 the surface, under the microscope, a somewhat reticulated pattern, but 

 the distinctive features of the species appear to be curious wavy inter- 

 rupted axial hydrophanous lines and spots, which give to the surface 

 of the shell a vermiculated appearance that I have not seen in any of 

 the other species. 



I have not seen the typical race from Puerto Galera and shall have 

 to quote description and figures of this from Reeve. I have, however, 

 two races from the southern end of the island — one from the east coast 



