STOASTOMA §. 1. 2. 
185 
axin circumdante munita. Apertura [semi-]circularis, continua, 
simplex. (Gray). 
Electrina (genus Cyclophoridariim) Gray Catal. Cycloph. p. 30 
— (sect. vStoastomatis) Pfr. Mon. Pneum. p 319. Suppl. p. 170. 
— (subgenus Stoastomatis) //. ^ A. Adams. Gen. II. p. 308. 
Cyclostomatis sp. Sow. 
Species : 
1. succineum Sow. (Coll. 1. — Stoasloma suc- 
f'tnciim ('hlily 1. c. p. 179, — Ins. Opara.) . Pneum. ]I p. 170. 
§. 2 . 
Levvisia Cliitty. 
Testa apertura duplice praedita. 
Lewisia Chitty in Proc. Zool. Soc. Lond. 1857. p. 167. 169. 
— H 4’ A. Adams Gen. It. (Pt. 5. 1858.) p. 646. t. 138. f. 12. 12a. 
Stoastomatis sp. C. B. Ad., Pfr. Mon. 
Species : 
2. A g a s s i z i a n u m C. B . Adams, f ( Lewisia 
Ayassiziana Chitfy 1. c. p. 169.) .... Pneum. II p. 171. 
3. Philippi anum C. B. Adams, f {Lewisia 
Philippiana Chitly 1. c. p. 169.) - - -171. 
4. WoodwardlaiiiEiii f 
T. subdiscoidea, pallide cornea; spira levissime elevata, 
ambitu concava ; anfr. 4 vix rotundati, sutura parum impressa 
separati, striis incrementi distinctis sculpti, ultimus rotundatus, 
carinis 14 (in penult. 4) distantibus, obtusiusculis munitus; 
apertura soluta , subdepressa et subconstricta, semielliptica; 
labrum duplex, subincrassatum et reflexum , glabrum, pla- 
num, non crenatum ; labium strictum, margine centre angii- 
latim producto, rotundatum et reflexum versus umbilicum 
occultum; lamella labralis abrupte a labro ascendens, cavitatem 
formans intus apertura longiorem, anfractus ultimi partem in- 
feriorem inflexione acuta attingens, extus perconvexum, sutura 
profunda a basi anfractus ultimi separatum. — Alt. 0,057, 
lat. max. 0,083, lat. min. 0,07 poll. (Ch.) 
1150. 
1151. 
1152. 
1153. 
