76 Moll. 
MOLLUSCA. 
(Pass.) isthmodon and exodon (Martens, 1881), the latter = Ennea bal- 
fouri (Godw.-Aust.) : Martens, l. c. p. 144, pi. xxviii. figs. 5-9, Socotra. 
Buliminns riebeclri (Martens) = balfouri (Godw.-Aust.) and B. candi- 
dissimus (Pfr.), Socotra; id. 1. c. pp. 14 G & 147, pi. xxviii. figs. 10-13. 
Achatinella. Observation concerning tlieir ‘singing’; II. Glauvillo 
Barnacle, J. of Conch, iv. p. 118. 
Cionella acicula (Miill.) found in an old skull ; Martens, Nachr. mal. 
Ges. 1883, p. GO. 
Leptinaria. [See Testacellidce.] 
Geostilbia maze?, sp. n., and gundlaclii (Crosse) ; Maze, J. de Conch, 
xxxi. p. 7, pi. i. figs. 2 & 1, Guadeloupe. G. comorensis , sp. n., Morelet, 
tom. cit. p. 19G, Mayotte. 
Stenogyra. Notes on the colouration of the animal and its carnivorous 
habits ; Maze, l. c. pp. 1, 2, 41, & 42. 
Stenogyra decollata (L.), varieties; Kobelt, Iconogr. (2) i. pp. 54-56, 
pi. xx. 
Riebeckia , subg. n. of Stenogyra. Type, socotorana (Martens) = fumi- 
ficata (Godw.-Aust.), with remarkable varieties in size and shape ; radula 
described, somewhat different from that of Stenogyra, the median tooth 
being not very small and the lateral teeth bicuspidate. Martens, Conchol. 
Mitth. ii. pp. 147-149, pi. xxix. figs. 1-8. 
Stenogyra enodis (Godw.-Aust.) = socotorana (Martens, 1881), and S. 
arguta (Martens) = hirsuta (Godw.-Aust.), Socotra ; id. 1. c. p. 149, 
pi. xxviii. figs. 14-18. 
Stenogyra lugubris and nebulosa , spp. nn., Morelet, J. de Conch, xxxi. 
pp. 399 & 400, pi. x. figs. 4 & 5, Landana, mouth of Congo. 
Stenogyra glabella, pyramidalis, and spinula , spp. nn., id. 1. c. pp. 193-195, 
pi. viii. figs. 9-11, Mayotte, Comore Islands. 
Stenogyra didyma , sp. n., Westerlund, Nachr. mal. Ges. 1883, p. 51, 
Singapore. 
Stenogyra aculeus , sp. n., Tapparone-Canefri, Ann. Mus. Genov, xx. 
p. 144, Amboina. 
Subulina perrieriana, Anderta, and mabilliana , Abuna Yusef, spp. nu., 
and munzingeri (Jickeli, as Acicula ) ; Bourguignat, Mal. Abyss, pp. 81-83, 
pi. ix. figs. 64-69. 
Beccaria, g. n. Near Subulina ; shell glassy ; mouth vertical ; pillar 
straight, not truncated at the base. B. isseli (Jickeli, as Subulina ), 
Bogos country. Id. 1. c. p. 119. [Name preoccupied in the Nudi - 
branchia.'] 
Cceliaxis (II. Ad. & Angas). P. Fischer refers Balea australis (Forb.) 
to this genus, and describes its radula, which resembles that of Clausilia ; 
he thinks that it should be placed near Eucalodium , but supposes that C. 
layardi, the typical species of the first authors, may belong to the 
Agnatha ; J. de Conch, xxxi. pp. 98-102, pi. iii. figs. 4-6, shell and radula. 
Abbadia , g. n. Near Balea , but with a prominent columellar fold. A. 
cethiopica , sp. n., Bourguignat, l. c. p. 69, pi. x. figs. 82 & 83, Mount Zebul, 
Abyssinia. 
Alopia glauca (Bielz) var. n. costata (Bielz, MS.) var. n. ambigua , 
subsp. haueri (Bielz) var. n. transitans , A; elegans (Bielz) subsp. n. 
