166 COCHLOSTYLA-TRACHYSTYLA. 



H. montfortiana PER., P. Z. S. 1846, p. 38 ; Monogr. i, p. 224. 

 REEVE, Conch. Icon. f. 76. 



The specimens before me, one of which is figured on pi. 41, are 

 not "ponderosa" nor is the aperture " intus alba." Otherwise they 

 correspond with Pfeiffer's diagnosis, translated above. They differ 

 from C. bruguieriana in being larger, somewhat more turbinate in 

 contour, the hydrophanous cuticle not streaked, the columella sub- 

 dentate below, and the apex purple. These distinctions may prove 

 to be variable when more shells are examined. 



C. BRUGUIERIANA Pfeiffer. PI. 40, figs. 6, 7 ; pi. 57, figs. 77, 78. 



Imperforate, globose-turbinate, rather thin but solid, rounded at 

 the periphery. Covered with a hydrophanous cuticle light brown 

 in color, obliquely streaked with cream- white ; the apical whorls 

 pink, with a darker band along the suture. 



Surface smooth ; cuticle removed around the columella and in 

 front of the mouth, exposing the dark brown ground-color. Whorls 

 5, somewhat convex, the last not descending in front, or but slightly, 

 rounded at the periphery, or more rarely very obtusely subangular, 

 convex beneath. Aperture wide semi-lunar, purplish-pink inside ; 

 lip very narrowly expanded, blackish-brown; columella dilated, 

 deeply inserted, snow-white, brown at the base. 



Alt. 24, greater diam. 25, lesser 22 mill. 



Philippines. 



H. bruguieriana PFR., P. Z. S. 1845, p. 44; Conchyl. Cab. p. 

 299, t. 44, f. 3, 4 ; Monogr. i, p. 224. REEVE, Conch. Icon. f. 38. 



More elevated than the other forms of Axina, and usually quite 

 rounded at the periphery. It is very difficult to draw the line be- 

 tween Axina bruguieriana and Calocochlea roissyana, etc., but still, 

 what little difference there is seems to be in favor of placing brugui- 

 eriana in the present group. 



The preceding species is doubtfully distinct, but differs in being 

 larger, with less streaked cuticle and purple apex. 



Subsection 3. TRACHYSTYLA Pilsbry. 



These are the Cochlostylw cinerece of Semper. The shell is solid, 

 dark colored, with a dull ashen hydrophanous cuticle. The spire is 

 short, whorls few and rapidly widening, columella oblique, straight; 

 surface dull and roughened. 



