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this family (Arch, fiir Naturgesch. xxxi. p. 203), after a short 
introduction relative to his own and the researches of others in 
the Phyllopoda, particularly on the species of Estheria and 
Limnadia hermanni, proceeds to describe the genus Estheria 
(Riippel) (Cyzicus, Aud., Isaura, Joly), giving a detailed ac- 
count of its structure, and adds a list of all the known species 
according to the following districts, 1. c. p. 233 : — - 
North America : Estheria caldwelli (Baird), from Winipegsee. — Central 
America : Estheria jonesii (Baird), Grube, I, c. p. 261, tab. xi. figs. 7-12, 
tab. ix. fig. 11, tab. x. fig. 16, from Cuba, in brackish water ; E. dunheri 
(Baird), from Mexico and Ziniapan j E. mexicana (Claus), Grube, 1. c. p. 265, 
tab. xi. fig. 5, tab. viii. fig. 6, tab. x. fig. 13, from Mexico and Zimapan. — 
South America : Estheria brasiliensis (Baird), from Brazil ; E. dallasU 
(Baird), from Brazil (?). — Australia : Estheria herchii (Baird), from South 
Australia. — East India : Estheria hoysii (Baird), E. similis (Baird), E. politd 
(Baird), E. hislopi (Baird), E. comprcssa (Baird). — Syria and Mesopotamia: 
Estheria gihoni (Baird), from Jerusalem ; E. hicrosohjmitana (Fischer), from 
Jerusalem; E. lofti (Baird), in pools left by the overflow of the Tigiis. — 
Europe: Limnadia [^Estheria^ tetracera (Krynicki), Grube, 1. c. p. 248, tab. 
xi. fig. 2, tab, ix. fig. 20, from Charkow, Warsaw, and Moscow ; Isaura 
[Estheria^ cydadoides (Joly), Grube, 1. c. pi. xi. fig. 3, from Toulon ; Estheria 
melitensis (Baird), from Malta and Sicily ; Isaura \^Esthcria^ ticitcnsis (Cre- 
velli), Grube, 1. c. p. 259, tab. xi. figs. 4-11, tab. viii. figs. 6-3, tab. x, fig. 
14, from Lombardy; E. 2^cstcnsis (Briihl), from Pesth. — Algeria, Egypt, 
Abyssinia : Estheria guhernator (Klunziger), from brackish pools near Cairo ; 
E. dahalaeensis (Riipp.), Grube, 1. c. p. 246, tab. xi. fig. 1, from Abyssinia and 
Dahalia, — Cape of Good IIope : Estheria macyiUivrayi (Baird), from the 
Cape and from Greene Point in the open sea ; E. ruhidgei (Baird), from the 
Cape and Port Elizabeth ; E. donadformis (Baird), Grube, 1. c, p. 243, 
tab. xi. figs. 8-13, tab. x. figs. 1-9, tab. viii. figs. 1, 2, 3, 7, tab. ix. figs. 
2, 3, 7, 12, 13, 14, from Kordofan ; Cyzicus australis (Lov6n), from Kaflirland. 
The mithor also enumerates the species (fourteen) that have 
been found fossil, and classifies the reeent species under three 
heads, aceording to the form of the shell : — 
I. Round, as exampled in E. hislopi. 
II. Oval, as exampled in E. donadformis and E. hoysii^ which ho again 
divides and subdivides according to the markings, structure, and glossy ap- 
pearance of the shell. 
III. Quadrangular, or roundish-oblong, as exampled in Estheria dunheri. 
Full descriptions and illustrations are given of those spcc’es to which wo 
have placed the references, as well as a figure of the fossil species E. midcn- 
dorji in tab. xi. fig. 8. 
Prof. G rube then gives a full description of Limnadia (Brongt.) , as well as 
of the following species : — 
Tdmnadia hermanni (Brongt.), 1. c. p. 268. lie thinks that there is nothing 
in Linnmus’s short description of Monocuhis lenticularis from Finland that 
is inconsistent with its being taken for the present species. L. matiritiana 
(Guer.), 1. c. p. 271; L. antillarum (Baird), 1. c. p. 272, from St. Domingo. 
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