PHYLLOBRANCHIA. TURBONID. 163 
longitudinal lines much elevated. Suture not very distinct. 
Height one-sixth of an inch. 
Inhabits the deep sea on the coasts of Devonshire. 
This new species was found by Mr. C. Prideaux in the Sal- 
combe estuary; Mr. Cranch found it in Plymouth Sound, 
Torbay and Falmouth Bay. 
Genus 71. TuRBONELLA. 
Turbo et Helix, Auctorum. 
Testa alté turrita. Sutura profunda. Apertura peritremate 
perfecto instructa. 
Animal incognitum. 
Shell highly turrited. Sutures deep. Aperture furnished 
with a complete peritreme. 
Animal unknown. 
Synopsis Specierum. 
1. Hibernica. Testa alba ; anfractibus septem, omnibus, nisi ba- 
silari, qui est spiraliter elevato-lineatus, transversim costatis. 
2. Montaguana. Testa alba; anfractibus sex, glaberrimis, 
transversim costatis. 
3. costata. Testaalbi; anfractibus quinque, tumidis, nitidis, 
_ transversim costatis. 
4. decussata. Testaalba; anfractibus quinque, nitidis, decus- 
satis elevato-striatis. 
5. striata. Testa brunnea ; anfractibus sex, transparentibus, 
nitidis, spiraliter elevato-lineatis. 
6. pallida. Testa pallida, alba, glabra; anfractibus septem, 
glaberrimis. 
7. transparens. Testa transparente, pallido-alba ; anfractibus 
sex, glaberrimis. 
8. angusta. Testa angusta, albida ; anfractibus quinque, gla- 
bris, nitentibus. 
9. nivosa. Testaalba; anfractibus sex, tumidis, glabris, niten- 
tibus ; sutura valde distincta. 
10. vitrea. Testa glaberrima, nitida, vitrea ; anfractibus quin- 
que, tumidis ; sutura valdé distincta. 
