82 Moll. 
MOLLUSCA. 
Bithinia hyalina, sp. n., Brazier, P. Linn. Soc. N. S. W. i. p. 9, N. S. 
Wales. 
Bithinia costigera (Beck), figured by Hanley Theobald, Conch. Ind. 
pt. viii. pi. cli. fig. 10. 
Valvatid^e. 
Valvata' aliena and sihirica (Middendorff, MS.), spp. nn. (= cristata 
var. frigida, Westerlund, 1878), Westerlund, Nachr. mal. Ges. 1876, 
pp. 101 & 102, Yenisei River, 63° and 60°-68° IST. lat.. 
Valvata grubii, sp. n., and haicalensis (Gerstfeldt), Lake Baikal, 
Dybowski, Mem. Ac. Pdtersb. (7) xxii. p. 28 ; radula of both figured, 
pis. ii. figs. 1-10, viii. figs. 9-16. . 
Heterocyclus (Crosse ; see Zool. Rec. ix. p. 163) isa fluviatileshell, near 
Valvata ; V. pupoidea (Say) belongs perhaps to this genus ; Crosse, J. de 
Conch, xxiv. pp. 99-101. 
AMPULLARIIDiE. 
Ampullar ia schrammiy sp. n., Crosse, J. de Conch, xxiv. p. 102, French 
Guiana. 
Ampullaria tasmanica^ sp. n., J. E. T. Woods, P. R. Soc. Tasm. 1876, 
p. 45, Tasmania. 
VERMETIDiE. 
Vermetus seguenzianus [-zanus], sp. n., Aradas & Benoit, Conch, viv. Sic., 
Mediterranean. 
Siliquaria, 13 species figured by Sowerby in the continuation of 
Reeve’s Conch. Icon. pts. 328 & 329. 
CiECIDiE. 
Parastrophia asturiana (Folin, 1870 ; Zool. Rec. vii. p. 143) and Sjn- 
rolidium mediterraneum (Costa) are the young state of Cwcum trachea 
and glahrum (Mont.) respectively ; Monterosato, Poche note, &c., p. 12. 
• Capultdjj. 
Capulus crystallinus (Gould) lives parasitically on a sea-star, Linclda 
Icevigata (Lam.) at Ovalau ; Schmeltz, J. Mus. Godelfr.pt. xii. p. 16Q. 
ScALARIIDiE. 
Scalaria loveni (A. Adams) ; Kobelt, JB. mal. Ges. iii. p. 371, pi. iv. 
fig. 4, Magero, Arctic Norway. 
Scalaria celesti, sp. n., Aradas & Benoit, 1. c. Mediterranean ; = fron- 
dosa (S. Wood), Kobelt, JB. mal. Ges. iii. p. 282. 
Scalaria simillima, new name for princiq)alis (Sow., wee Pallas [already 
named ducalis by Morch, Mal. Bl. 1875, p. 148], fischeriana for uni- 
costata (Sow., nec Orb.), microsoma for attemiata (Sow., nec Pea.se), 
