GASTROPODA (pECTINIBRANCHIATA) . 
Moll. 93 
PTENOG-LOSSA. 
lANTHINIDiE. 
Ianthina rotundata, Leach : notes on occurrence at Sicily ; Smart & 
Cooke, (340) p. 298. 
SCALARIIDJE. 
Acirsa decussata (Cantr.) not a Sccdaria, as stated by Jeffreys; A. 
prcelonga , Jeffr., belongs to Acrilla : Boury (44). 
Elasmonema , n. n., = Callonema , Hall, nee Conrad; Fischer, (123) 
pp. 778. 
Scalaria inclyta , sp. n., hab. ?, Melvill, (259) pi. xi. fig. 1. S. leptalea, 
sp. n., Bush, (60) p. 465, 14-16 fath. S. teres , sp. n., id. t. c. p. 465, 
pi. xlv. fig. 8, 16 fath. S. trochiformis , S. senegalensis , S. boettgeri , spp. nn., 
Goree, Senegal, Maltzan, (246) pp. 25 & 26. 
GYMNOGLOSSA, 
The Gymnoglossa are divided into two groups : 
1. Homceostropha : nucleus regularly coiled ( Eulimidce ). 
2. Heterostropha : nucleus coiled in a plane different from the 
remainder of the shell, or irregularly ( Pyramidellidce ). 
Fischer, (123) p. 780. 
Eulimid^. 
Eulima Candida , Marrat, from Formosa ; Smith (344). 
Niso ceglees, sp. n., Bush, (60) p. 465, pi. xlv. figs. 10 & 10a, 7-32 fath. 
PrRAMIDELLID^J. 
Brachystomia (type, Odostomia rissoides , Hanley), Auristomia (type, 
Odostomia erjaveciana, Brus.), sectt. nn. Odostomia ; Monterosato, (266) 
pp. 200 & 201. 
Obeliscus suturalis, sp. n., Goree, Senegal, Maltzan, (246) p. 26. 
Odostomia engonia, sp. n., and var. teres , Bush, (60) pp. 466 & 467, 
pi. xlv. fig. 9, 15 & 16 fath. 
Pyrg isculus [type, Pyrgulina scalaris, (Phil.)], Pyrgostelis [type, Pyrgu- 
linarufa , (Phil.)], Pyrgostylus [type, Pyrgulina striatula, (Linn.)], sectt. 
nn. Pyrgulina ; Monterosato, (266) pp. 82 & 83. 
Turbonilla miilleri , T. senegalensis , near T. lactea , L., T. rosea , spp. nn., 
Goree, Senegal, Maltzan, (246) pp. 27 & 28. T. perlepida and T. grandis , 
spp. nn., Verrill, (367) p. 427, off Chesapeake Bay, 70 & 1500 fath. T. 
bifasciata and T. metula certainly, and T. acicularis probably, = fusca (A. 
Ad.) ; Cooke, (85) p. 39. 
De Folin (131) groups, under the name Chemnitzidce, all shells which 
have the axis of the embryonic shell at an angle with that of the subse¬ 
quent one, and considers that the family may theoretically be divided 
