140 GASTEROPODA OF THE INFERIOR OOLITE. 
59. Anaria sonipa, Lycett, var. Plate VII, fig. 6. 
Description : 
Length : : = 7mm: 
Width of body-whorl to oihoiaht of shell . . 40: 100. 
Spiral angle . ; : 3 taOy. 
The apical whorls, conjectured to be atone three in number, are wanting ; the 
four remaining whorls of the spire are angular, the keel being rather above the 
middle ; a series of nodular coste, wide apart, originate upon the keels and extend 
for some distance below : in the penult these assume considerable proportions, and 
are seen to decussate with strong spiral lines. The body-whorl is rather shorter 
than the spire, moderately ventricose, and carries one very prominent and spinous 
posterior keel, from which a short upturned digitation emanates; beneath the 
posterior keel is a strong system of spirals (the several “‘ encircling grooves”’ of 
Lycett), one of which functions as an anterior keel. From this proceeds an 
imperfect anterior digitation, The whole of the body-whorl and short upturned 
canal-sheath are richly chased with fine spiral ornament. Other indications 
wanting. 
Relations and Distribution.—A single specimen from Crickley—most probably 
from the Oolite-Marl—is all I have seen. This belongs to Mr. Brodie, and is 
marked “ Rostellaria solida, n. sp.,” in Lycett’s handwriting. It is less rugose 
and less variciform than the Jermyn Street specimen, which I assume to be the 
type, and it possesses, moreover, an incipient anterior digitation, like that of Alaria 
Doublieri. This, however, may have existed in the Jermyn Street specimen, 
but destroyed or obliterated subsequently. 
N.B.—It is to be regretted that the interesting forms described as Alaria 
spinigera, Al, solida, and Al. solida, var. are so scarce that we are very much in 
the dark as to their true nature. Whilst exhibiting important differences, they 
possess several features in common, such as a comparatively short spire, spinous 
or rugose ornamentation, and a short, upturned principal digitation. 
60. ALARIA HAMOIDES, sp. nov. Plate VII, figs. 7 a, 7 b. 
Description : 
Length ; 5 . 24mm. 
Width of body-whorl fo length of shell . . 42: 100 
Spiral angle . : ; : ice. 
Shell turrited, fusiform. Probable number of whorls ten to eleven (apical ones 
