378 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th See. 



striated ; sculpture of upper whorls of retract! vely inclined 

 close-set rather vermiculate axial wrinkles crossed by numer- 

 ous fine sharp spiral striae; in some specimens this sculpture 

 covers the whole shell but in most the last whorl becomes 

 rudely and irregularly coarsely wrinkled and punctate to a 

 greater or less extent; the normal sculpture retains the pink- 

 ish light brown color which follows the rose pink of the 

 apical turns, but when the abnormal wrinkling begins the 

 surface becomes of a dirty white color; a pale peripheral 

 band on the last whorl is preserved in most specimens; the 

 suture is deep but not channelled ; the base rounded, with an 

 almost imperforate umbilical pit partly covered in the adult 

 by the reflexion of the pillar lip; aperture subquadrate, the 

 margin thickened but the outer lip not reflected, showing a 

 slight thickening in fully adult specimens on its inner side 

 medially; the pillar has a thick lump of white callus upon it, 

 and is joined to the outer lip over the body by a deposit of 

 enamel; the throat is of a dark flesh-color. Length of shell 

 15 ; of last whorl 12 ; of aperture 8 ; diameter 9 mm. 

 On bushes and grass near Villamil at 2300 to 3300 feet 

 elevation ; Ochsner. 



6. Bulimulus (Naesiotus) akamatus, new species 



Shell solid, chocolate brown, of six and a half whorls; 

 apex dimpled, dark crimson, nuclear whorls transversely stri- 

 ated; sculpture of rather irregular moderately prominent in- 

 cremental lines, except on the last half of the last whorl 

 which is irregularly malleated and indented the whole 

 crossed by very faint and minute spiral striae; suture dis- 

 tinct, not deep, base rounded with a rather wide subcylindric 

 umbilical perforation; aperture small with a continuous, 

 thickened, not reflected margin; callosities white, that on the 

 pillar continued halfway through the last whorl, diminish- 

 ing around the axis; the medial thickening of the outer lip 

 is also continued backward some distance, as is a very promi- 

 nent narrow tubercle on the body between the two lips; the 

 upper part of the axis is slender and simple. Length of shell 

 15 ; of last whorl 10 ; of aperture 5.5 ; diameter 8 mm. 



Found by Ochsner on Indefatigable Island, under blocks 

 of lava, at 200 to 650 feet elevation, in the arid zone. 



