GASTROPODA (PECTINIBRANCHIA) . 
Moll. 47 
LlTORINIDiE. 
Litorina. The known species, 105, enumerated, with their synonymy, 
by Weinkauff, JB. mal. Ges. x. pp. 213-227. 
Iphitus , g. n. Shell conical, covered with spiral rows of tubercles ; 
the apex consists of a cylindrical process of several whorls, which is 
closely striated lengthwise ; operculum horny, paucispiral. Allied to 
Fossarus. I. tuberatus , sp. n., Atlantic. Jeffreys, P. Z. S. 1883, pp. 113 
& 114, pi. xx. fig. 12. [Name preoccupied by Rafinesque, 1815, for a 
Pteropod, but quite obsolete. — Rec.] 
Cithna (A. Adams, 1863) = Hela (Jeffr.) ; G. cincta , carinata , adamsi , 
and naticiformis, spp. nn., Atlantic : id. 1. c. pp. 110-112, pi. xx. 
figs. 8-11. 
Fossaria funiculata , sp. n., Australia, and F. simsoni (Ten.-Woods) == 
petterdiana (Crosse) ; Tenison- Woods, Tr. R. Soc. Yict. xvii. 1881, p. 81, 
fig. 6. 
Rissoidjb. 
Rissou concinnata, sp. n., Jeffreys, Ann. N. H. (5) xi. p. 396, pi. xvi. 
fig. 2, off Crete, 70-120 fath. 
Trachysma delicatum (Phil.) found alive in the inlet of the Jade, 
N.W. Germany ; dentition that of the Tamioglossa : Poppe, Abh. Yer. 
Brem. viii. p. 364. 
Nematura ceylonica, sp. n., Westerlund, Nachr. mal. Ges. 1883, p. 166, 
Ceylon. 
Hydrobia P balfouri , sp. n., H. H. Godwin-Austen, P. Z. S. 1883, p. 4, 
pi. i. fig. 4, Socotra. 
Bythinella abbreviata (Mich.), found at Lausanne ; Sterki, Nachr. mal. 
Ges. 1883, p. 74. B. tornensis (Haz.): radula; Hazay, Mal. Bl. (2) vi. 
p. 99, pi. vii. fig. 3. 
Bythinella obtusa (Lea), Key West, in small ponds; the locality given 
by Lea is probably erroneous : Dali, P. U. S. Nat. Mus. vi. p. 334. 
Bythiospeum . Generic name proposed for Vitrella (Clessin), this being 
preoccupied by Swainson [but not adopted by later authors, = Akera } 
Muller, 1776. — Rec.]. B. letourneuxi, Carinthia, and africanum , Algeria, 
spp. nn. Bourguignat, Bythiospeum, 1882. 
Vitrella clessini and Jcraussi , spp. nn., Weinland, JH. Yer. Wiirtt. 1883, 
pp. 124 & 125, woodcuts, and Nachr. mal. Ges. 1883, pp. 79 & 80, recent 
alluvial deposits of the river Jagst at Schonthal, Wiirttemberg. 
Paulia bourguignati , sp. n., Locard, Act. Soc. L. Lyon, 1883, Courte- 
not, Dep. Aube. 
Avenionia, g. n., for A. locardiana, vayssierii , and fabrii , spp. nn., in 
wells and subterranean waters at Avignon ; Nicolas, M6m. Ac. Yaucluse, 
1882, p. 159. According to A. Locard, this genus = Paulia ; the second 
species = P. berenguieri ; the third is founded on a broken shell. 
Pyrgula nevadensis y sp. n., Pyramid Lake and Walter’s Lake, Nevada, 
Stearns, P. Ac. Philad. 1883, pp. 171-176, woodcut, and Am. Nat. xvii. 
p. 1296. [The correctness of the generic position remains to be proved 
1883. [VOL. XX.] B 15 
