GEOGRAPHICAL DISTRIBUTION. 
Moll . 31 
the Colorado Desert, at Indio, and Anodonta californiensis in the St. 
Cruz River, Arizona ; Am. Nat. xvii. pp. 1014-1020, woodcuts. 
Florida. 20 inoperculated and 4 operculated land shells, 1 Planorbis 
and 6 Auriculidce , collected by H. Hemphill, enumerated by W.H. Dall, 
P. U. S. Nat. Mus. vi. pp. 321-323. No true fresh-water Bivalve ; 2 
species of Cyrena in saline ponds. 
18. West Indies and South America. 
Porto Rico. The land and fresh-water shells enumerated by J. Gund- 
lacii in An. Soc. Esp. xii. pp. 5-58. The species have been already 
given by the Recorder in JB. mal. Ges. iv. 1877, pp. 340-362, from the 
collections of J. Gundlacii and L. Krug. 
Guadeloupe, Les Saintes, Marie-Galante, and Desirade. List of their 
land and fresh-water shells, with valuable biological observations, by H. 
Mazi£, J. de Conch, xxxi. pp. 1-54, pi. 1. The first nourishes 80 species, 
of which only 18 are really fresh-water species, 10 submarine littoral, 
and 5 inhabitants of saline water. The species collected on the other 
islands are much fewer, but do not differ from those of Guadeloupe, 
except Amphibulima patula , found alive only on Marie-Galante, and 
Rhodonyx rubescens (Desh.), the occurrence of which on the same island 
is somewhat doubtful. 
Trinidad. Notes on its fresh-water shells, including a species of Myti- 
lidce [probably Praxis ] and a small Pholas ; J. v. Kennel, Arb. z. Inst. 
Wiirzb. vi., separate copy, p. 6. 
Eastern Brazil. 17 terrestrial and 7 fresh-water species enumerated, 
with valuable notes concerning their geographical distribution and 
synonymy ; H. Doiirn, JB. mal. Ges. x. pp. 346-35G, pi. xi. 
b. Marine Mollusca. 
1. Deep Sea Researches Generally. 
R. Watson describes new species of Nassaria , Murex , Scalaria , Sola- 
rium, of Fissurellidai , Eulimidce, Tornatellidcc , and Bullidcc, from H.M.S. 
‘ Challenger ’ Expedition, found at St. Thomas, the Azores, Ascension, 
in the South Atlantic, Kerguelen, Torres Straits, Amboyna, the Philip- 
pines, and Fiji ; some of the Fissurellidce found in the West Indies at 
390 fath. are identical with European Miocene fossils : J. L. S. xvi. 
pp. 594-611, & xvii. pp. 26-40, 112-130, 284-293, & 319-346. 
Western Africa , Coast of Sahara , Azores, and Cape Verde Islands. 
Some new species from depths of 400-5000 metres ; P. Fischer, J. de 
Conch, xxxi. pp. 391-394. 
On the deep-sea Solenoconclice ; id. C.R. xevi. pp. 77-79. 
Several Arctic species of Mollusca, found in great depths of the 
Atlantic between the tropics, discussed ; id. op. cit. xcvii. pp. 1497-1499. 
A blind species of Fusus found in the depths of the Sargasso Sea ; 
1883. [yol. xx.] b 14 
