90 MOLLUSCA. 
Length one-eighth of an inch; breadth three-sixteenths of an inch. 
Inhabits Maui, Sandwich Islands. 
One of the smallest and the shortest proportioned species belonging 
to this group, its length being but little greater than its breadth. It 
is much more ventricose and less solid than A. acczncta. 
Figure 98, the shell, enlarged; 98 a, natural size. 
ACHATINELLA CEREALIS (Gould). 
Testa parva, elongata, cylindraceo-conica, impolita, cinereo-castanea : 
spira obtusa, anfractibus septem ad octo planulatis, ultimo trientem 
longitudinis vix superante: apertura parva, lunata, quadrantem lon- 
gitudinis adequans ; peristomate simplict, intus tncrassato ; plica 
columellari obsoleta ; anfractu penultimo callo induto. 
Achatinella cerealis, Goutp; Proceed. Boston Soc. Nat. Hist., i. 
201. Expedition Shells, 36. 
Swett small, conic cylindrical, elongated, rather solid, opaque, 
covered with an unpolished ashy-brown epidermis. Spire composed 
of about eight nearly flat whorls, obtuse at tip, separated by a well- 
marked suture; the last whorl but little more than one-third of the 
length of the shell. Aperture small, semilunar, about one-fourth the 
length of the shell. Lip simple, whitish, thickened within; entire 
and rounded at base. Columella with a very faint notch and fold: 
penultimate whorl coated with enamel. 
Length of axis three-eighths of an inch; breadth one-eighth of an 
inch. 
Found at Waianai, island of Oahu, Sandwich Islands. Case. 
In size, form, and colour it resembles Bulimus hordeaceus, but it 1s 
still more slender. 
Figure 99 the shell enlarged ; 99 a, natural size. 
