416 Mr. E. A. Smith on Gasteropoda 
8. Pleurotoma crispa, Lamarck ; Conchol. Icon. i. f. 11 a, 6. 
Hab, Ooshima Harbour, 8 fathoms, bottom sandy mud and 
shelly. 
9. Pleurotoma leucotropis, Adams & Reeve, Voy. Samarang, 
p. 40) ploxeiny. 
Hab. Matoza Harbour, 6 fathoms, sand ; and Ooshima Har- 
bour, 8 fathoms, sandy mud and shelly. 
10. Pleurotoma vertebrata, Sp. nov. 
Testa elongato-subfusiformis, alba, maculis fuscis variegata, versus 
apicem dilute violacea ; anfract. 10, primi 3 convexi, vitrei, politi, 
sequentes 6 tricarinati (carina mediana maxima), inter carinas lira 
unica spirali, gracili, liris longitudinalibus numerosissimis con- 
cinne decussata (lira superiore ad locos intersectionis nodosa) 
ornati; anfr. ultimus inferne contractus, ad 14-carinatus (carina 
paululum peripheriam supra maxima) ; apertura parva, longitu- 
dinis testee + vix superans, intus suleata, sulcis costis externis 
respondentibus; labrum tenue, margine crenulatum ; incisura 
lata, haud profunda, supra carinam maximam sita; columella 
leviter obliqua, medio obsolete uniplicata; cauda parva, alba ; 
canalis perbrevis, latus, leviter recurvus. 
Long. 16 muill., diam. 51. 
Hab. Persian Gulf (Colonel Pelly); Matoza Harbour, 6 
fathoms, sand (St. John). 
The above name is applied to this lovely species because 
the fine nodose liration which encireles the whorls just above 
the large central keel is crossed by slender thread-like lines, 
diverging like the processes from a herring’s backbone. The 
other fine lirations are regularly oblique. The prominent central 
keel and style of colouring at once distinguish this form. 
11. Pleurotoma ( 
Testa fusiformis, sub epidermide fugaci olivacea pallide fuscescens ; 
anfract. 10 conyexiusculi, striis spiralibus tenuissimis subconfertis 
(in anfr. ultimo infra peripheriam majoribus) incrementique lineis 
flexuosis insculpti; apertura rufescenti-fusca, ovata, inferne con- 
tracta, canalem latum, breviusculum obliquum formans, circiter 
longitudinis totius 2 equans ; labrum tenue paululum supra me- 
dium late sinuatum ; columella tortuosa, longitudinaliter scalpta ; 
operculum unguiforme, 
Long. 40 mill., diam. 14. 
Hab. About 100 miles south-east of Yesso, 48 fathoms, 
sand and stones. 
I feel much pleasure in dedicating this fine and very distinct 
2*) Sancti-Loannis, sp. nov. 
* The subgenera of Plewotomide will be given in a future paper. 
to) 
