140 
MOLLUSCA. 
Littorina exigua (Dunker)=^raww/am (Reeve, Schrenck, nec Gray) j L. 
wiensis (Phil.), Nagasaki : Lischke, Jap. Meeres-Oonch. ii. pp. 70 & 71. 
^ Littorina strigata, sp. n., id. Mai. Bl. xviii. p. 148, and 1. c. p. 73, pi. 5. fig. 22, 
Nagasaki. 
Z. {Melaraphe) vitiensis, sp. n.. Bunker, Mai. Bl. xviii. p. 160, Fiji I. 
Melaraphe hlanfordi^ sp. n., id. ibid., Rockhampton. 
Cremnoconchus. The anatomy of C. syhadrensis has been 
examined by Stoliczka, who comes to the conclusion that it 
agrees in all essential points with Littorina, but that the latter 
has very remarkable affinities with the CyclostomidcQ — also that 
it is not advisable to use the breathing-organ as an important 
character in the principal classification of the Mollusca?^ The 
gills of Cremnoconchus are stated to consist of a single rather 
narrow plume, composed of thin fillets, which grow on the upjier- 
side of the gill-cavity. P. As. Soc. Beng., May, 1871, pp. 108- 
115, woodcut. 
Fossarus azonus (^Stomatia, Brusina, 1865) =Natica crosseana (Kleciach, 
ISQS) F. petitianus (Tiheri, 1868), from the Mediterranean, and may, per- 
haps, become the type of a new genus, 3Iegalomphalus. Brusina, Bull. Malac. 
iv. pp. 7-9. 
Fossarina petterdi, Brazier, J. de Conch, xviii. p. 303, xix. p. 323, pi. 12. 
fig. 1, Tasmania J P. hrazieri, Angas, I, c. p. 18, pi. 1. fig. 24, Pt. Jackson: 
spp. nn. 
PLANAXIDiE. 
Flanaxis striatulus (V\i\\.)-=iplumheus (Pease) and P. labiosus (A, Ad.), 
Martens & Langkavel, 1. c. pp. 41 & 42, pi. 2. figs. 11 & 12, Sandwich I. j P. 
abbreviatus (Pease), ibid. p. 46, Tahiti. 
RlSSOIDiE. 
Itissoina lamberti, Souverbie, J. de Conch, xviii. p. 425, pi. 14. fig. 6, Art I. 
N. Caledonia j R. crassa, Angas, 1. c. p. 17, pi. 1. fig. 16, Pt. Jackson : 
spp. nn. 
Rissoa membi'anacea (Adams), Morch, Vid. Medd. 1871, p. 189, distin- 
guishes the following varr. : — 1. octona (Mohreustern, nec L.) ; 2. membra- 
nacea, typej 3. labiosa, Mont., with a stronger shell, (3 a) with red lines, 
(36) minor, = cornea (Lov^n) = Pa?w<hVic//a vulgaris (CErsted). 
Hydrobia (Paludinella) stagnaUs (Baster) (Montagu, Jeflr.) = 
haltica (li^Wiia.) — Helix octona (L.) and, as a second species, II. (P.) uUcb 
(Penn.) =Jeverensis (Schroter), with var. grandis, 9-9^ millims. long j both on 
the Banish coasts, and often in company. Id, 1. c. p. 188. 
Paludestrina legrandiana and wisemankma, spp. nn.. Brazier, P. Z. S. 1871, 
pp. 698 699, Tasmania. 
Amnicola grana (Say) found in Missouri by Tryon, Am. Nat. iv. p. 58. 
Paludinidas. 
Paludina ? solida (Phil.), Pfeiffer, Nov. Conchol. iv. p. 25, pi. 114. figs. 17 
& 18, Peru. 
Bithynia tentaculata (L.), var. producta (Moq.-Tand.), Clessin, Nachr. 
