Zoological Society. 513. 
The animal of the shell, called by Montagu Turbo unidentatus 
(Odostomia of Fleming), would appear, from the observations of my 
friend, the Rev. M. J. Berkeley, to be very similar. But the shell, 
in most points, differs, except in having a fold or plait upon the co- 
lumella. Still future observations may warrant possibly the modi- 
fication of the characters of Parthenia, for the reception of this shell 
and its allies. 
Species quedam. 
1. Parruenia putingeA. P. testa subcylindraceo-attenuata, oblon- 
giuscula, juniore ovato-tereti: anfractibus planis, elegantissime 
reticulato-cancellatis, striis spiralibus crebris equidistantibus, 
transversas equidistantes decussantibus ; sutura distincta impressa : 
columella postice torta, uniplicata. 
a. subventricosa. 
Lat. 13—12..  Long.aperte. _ 1%... alee 
a StS lin. : lone, ete 2G lin. vel 10 millim. 
Turbonilla Humboldti, Risso, Hist. 1V. 394. f. 63. male. Testa 
junior. 
Tornatella ? clathrata, Phil. Enum. 166. 
B. gracilis, angustata. 
eee, b+ -—1i.. ~ Long.aperte. 14... 
eS Me: Long. teste ~ 5 ae 
Anfractus 8 in utraque varietate. 
Hab. in mari Maderensi, rara; vv. Animal omnino lacteum. 
Dredged in deep water in the bay called Labra at P® Sad Lou- 
renco, in the spring of 1827, by H. Richardson, Esq. This shell in 
form resembles a Bulinus. 
2. Partuenia Teresra. P-. testa elongato-turrita, gracili, sen- 
sim attenuata: anfractibus convexiusculis, transverse obsolete 
costatis s. plicatis, striisque exiguis, concinnis, crebris, spiralibus, 
alias creberrimas, transversas, tenuissimas, plicasque decussanti- 
. bus: sutura distincta, impressa. 
tate 2 Me Long. aperte. 
Long. 7 ~"* Long. teste 
Turritella cancellata, Risso, Hist. IV. 110. f. 40? 
Hab. in mari Maderensi cum priore rariss. v. m. 
Of two examples dredged up without the animal, one is in perfect 
condition. The columella is quite simple, without any fold or plait. 
The whole shell is sub-opake or milk-white, and in form resembles a 
Turritella. 
3. ParTHENIA ELEGANTISSIMA. P. testa elongato-turrita, gracili, 
sensim attenuata, levi: anfractibus conveviusculis, costis trans- 
versis validis, latis, obliquis, confertis, equis sculptis : interstitiis 
levibus, costis angustioribus: sutura simplici, distincta: colu- 
mella postice subtorta. 
Ann. & Mag. N. Hist. Vol. vi. Suppl. 2h 
lL. 
ae lin. Anfr. 12. 
