14 COCHLOSTYLA-ORTHOSTYLUS. 



Helix (Cochlostyla) satyrus BROD., P. Z. S. 1840, p. 181. BuL 

 satyrus PFR., Monogr. ii, p. 13. REEVE, Conch. Icon. f. 29. B. 

 palawanensis PFR., P. Z. S. 1856, p. 388 ; Monogr. iv, p. 372. 



This species is less solid than C. leucophcea, and has a more oval 

 and lengthened body whorl. It differs from the preceding forms in 

 lacking oblique or zigzag denuded stripes. 



The typical C. satyrus (pi. 2, fig. 13) is rather conoidal, with 

 light colored upper whorls and nearly uniform cuticle. Specimens 

 before me from Albay seem to be typical. 



A specimen is shown in fig. 15 which differs in being longer, much 

 streaked with blackish, in lacking the subsutural line, and in hav- 

 ing an orange apex. This may be more nearly related to the C. 

 palawanensis. 



A variety which may be called v. minima is shown in figs. 5, 6, 

 of pi. 1. The cuticle is light, uniform where not eroded ; whorls 5 

 to 5J, the earlier whorls whitish, having a brown band bordering 

 the suture above, and the last 1? whorls have a narrow brown band 

 below the suture, unfortunately omitted in the figures. Columella 

 pure white. Alt. 34, diam. 23 ; oblique alt. of aperture 20 mill. 



Figures 16, 17, 18 of plate 2 represent a form collected upon the 

 Island of Palawan, which I take to be the palawanensis of Pfeiffer. 

 The shells have either a light chestnut (fig. 16) or a black (figs. 17, 

 18) ground color, becoming, in all cases, very light on the spire, the 

 earlier whorls whitish, showing a faint brown line above the suture. 

 The last three whorls always have a dark line bordering the suture 

 below, and this line has a tendency to emit short flames below 

 (figs. 16, 17), especially upon the spire. The hydrophanous cuticle 

 is persistent, ashy, becoming black on the body whorl in specimens 

 having dark ground color. The lip is black or brown. The colu- 

 mella is rounded, and of a purple color in dark, white in light 

 shells. The spire is wide, apex obtuse, sutures very shallow. 



Var. cyanocephala Pils. PI. 2, fig. 14. 



Ground color dark brown on the last H whorls, becoming light 

 yellow on the next earlier, the upper whorls dark blue; hydroph- 

 anous cuticle ashy brown, streaked with black ; sutural band 

 indistinct or wanting. Columella pink or white. 



Borneo (R. F. Geale) ; Palawan. 



C. GRAELLSI Hidalgo. PI. 5, figs. 2, 3. 



Imperforate, ovate or oblong, solid, nearly smooth ; chestnut col- 

 ored, covered with a streaked hydrophanous cuticle, the streaks 



