VAN DEE HtEVEN’s ZOOLOGY. 
89 
minute crustacean abounds in the Natron Lakes of Eezzan. Ano¬ 
ther species, A. salina, is common enough in our own salt works* Lievin 
decides that Artemia is not a natural genus, and accordingly refers the 
species to Branchipus. Close after this family (Branchiopoda), our 
author would place the Trilobites, the resemblance to Isopoda appear¬ 
ing to him rather an analogy than a real affinity. To the family Oniscides 
add a review by Dr. Kinahan of the genera of Terrestrial Isopoda (Onis- 
coidea), with descriptions of all the known British species and genera 
(see “ Natural History Review,” vol. iv.). 
We were disappointed at not finding any allusion to the discovery 
of blind Amphipoda. Yet, so long since as 1851, the genus Niphargus, 
appertaining to the family Gammaridae, was formed by Schiodte for 
some Crustacea, in which the eyes were wanting ; one species, too, of this 
genus having been found in England (near Maidenhead, in 1851), the 
account, therefore, might have reached the translator’s ears (vide “ Pro ¬ 
ceedings of Royal Swedish Academy” for 1855; or vol. iv. “ Natural 
History Review,” Notices of Serials, p. 9, and p. 41, 4, with a plate). 
In the “ Proceedings of the Royal Academy,” just referred to, there is an 
important paper by Liljeborg on the marine Crustacea of Kullaberg in 
Scania, the new species being chiefly Amphipods. 
In that most useful, in an economic point of view, of all the orders 
of the Crustacea—the Decapods—there is an oceanic genus made by Milne 
Edwards for the reception of a single species, i. e. Sergestes. Time 
passed on, and a second species of this oceanic genus graced the Royal 
Danish Museum: recently, however, a sailor voyaging to the Brazils 
captured no less than nine new species, which have been (with the other 
two) described by Rrceyer in the “ Proceedings of the Royal Danish So¬ 
ciety” for 1855. As eight out of the ten new species were found on the 
one spot, about 42° N. lat., and 21° W. long, Kroeyer thinks that this 
must be the metropolis of the genus. It is, at the least, a curious centre 
of creation, far out at sea. 
The last class we have to notice before coming to the Vertebrates is 
that of the Mollusca, which are divided into three classes, Tunicata, 
Conchifera, and Mollusca. In this the author follows Lamarck, and al¬ 
though he attempts to justify the using of the same word in. a general 
and also in a special sense, yet we would most decidedly advise no one to 
follow him in so doing ; and we surmise that the reverend translator will 
find it rather absurd to have to tell to his pupils at one time, that Mol¬ 
lusca consist of Tunicates, Conchifers, and Molluscs; and at another 
time, that Mollusca consist of Cephalopoda, Gasteropoda, &c. 
We have before mentioned, that though acknowledging their close 
affinity to the Tunicata, yet Van der Hoeven separates the Polyzoa 
from the Mollusca. We need hardly add that the Brachiopoda are 
placed with the Conchifera. We do not know of any recent researches 
on the Tunicates not noticed in these pages, except, perhaps, one by All- 
man on the Homology of the organs of the Tunicata and Polyzoa, in the 
“Transactions of the Royal Irish Academy” for 1852, vol. xxii. Da¬ 
vor. v.— rev. x 
