204 
ZOOLOGICAL LITERATURE. 
echinulatum, smwoswm, and (Wright), figured in Pfeiffer’s Novitates 
Concliol. vol. ii. pi. 62 (1864), all from Cuba. — Ch. dunkei'i, sp. n., Pfr. Mai. 
Blatt. xiii. p. 63, Cuba. 
Chondropoma julieni, sp. n., Pfeiffer, Mai. Blatt. xiii. p. 89, island Som- 
brero, West Indies. — Chondropoma navassensey sp. n., Tryon, Am. Journ. 
Conch, ii. p. 305, pi. 20. fig. 12, guano-island ofNavassa, West Indies. 
. jRealia ochrostomay variahilis, scalariformisy ajfinisy and Icevis (Pease, 1865) 
figured Am. Journ. Conch, ii. pi. 6. fig. 1-5. 
Truncatellidas. 
Truncatella princepSy sp. n., Dohrn, Mai. Blatt. xiii. p. 134, Prince Island, 
Guinea. 
AssiMiNEiE. 
Assiminea. The known species of this genus, many of which 
have been placed by previous authors in other genera, especi- 
ally Hydrocena and OmphalotropiSy are enumerated by Ed. v. 
Martens, Ann. & Mag. Nat. Hist. March 1866, p. 202. 
Another revision of the species of this genus, as represented 
in Cuming^s collection, is given by Fraueneeld, Verhandl. zooL- 
bot. Gesellsch. Wien, xvi. 1866, pp. 185-192. 
Hr. V. Frauen FELD (/. c. pp. 421-427) treats once more of 
the species of this genus, and expresses his doubts as regards the 
propriety of referring to it those with a keel round the umbilicus. 
[The Becorder regards the position of the eyes as the essential 
character of this genus ; and as he has observed this character 
in A. carinata (Lea), he cannot entertain any doubt with regard 
to its systematic place. — The differences between Frauenfeld^s 
and the llecordeFs lists of Assiminea are great, and due chiefly 
to the circumstance that the former examined the species labelled 
Assiminea in Cuming^s collection, whilst the latter endeavoured 
to point out which of the species named Hydrocena in the same 
collection appeared to him to belong to Assiminea. ~\ 
Helicinidaj. 
Hydrocena. Hr. v. Frauenfeld, Verb, zool.-bot. Gesellsch. 
Wien, p. 421, states that the original locality of Hydrocena cattaro- 
ensis, the type of the genus, on the foot of Monte Sello, near 
Cattaro, has been destroyed, but that the shell was found by 
himself afterwards on another spot at Cattaro ; both localities 
are moistened by fresh water. He adds a list of the so-called 
Hydrocena in Ffeiffer^s Monograph, with more or less critical 
remarks on the systematic position of the several species. 
Helicina. This genus is again treated by Mr. Sowerby in the 
^ Thesaurus he enumerates and figures all the species. The 
genera Trochatellaj Lucidellay Bchasiclieilay and Alcadia are re- 
united with Helicina, as they are stated not to be defined by any 
constant character. The sections admitted in the genus are the 
following ; — - 
