Zoology. 299 
of the family, as well as of the Viviparide, and the subdivisions of each, 
will be given in another place by the reviewer. ne genus Amnicola 
named by the reviewer Chilocyclus, while the latter, distinguished by its 
large, globose body-whorl, is called Somatogyrus. 
; z memoirs, brought together in this volume, are valuable contribu- 
tions to science, and will doubtless obtain for the author the merited . 
thanks of the scientific world. It were to be wished that more con- 
chologists would imitate him in precision and knowledge of bibli- 
ography. . Grin. 
2. Analytical Synopsis of the order of Squali, and Revision of the 
Nomenclature of the Genera ; by Tuuopore Gruu. pp. 42(-47). (Re- 
printed from Annals of New York Lyseum, vol. viii.) On the Classifi- 
cation of the Families and Genera of the Squali of California; by Tux- 
OpoRE Ginx. (Proc. Acad, Nat. Sci. Phila., Oct., 1862).—The two 
articles cited are devoted to the systematic revision of the families and 
genera of Sharks, which the author regards as constituting an order of 
Elasmobranchiate Fishes, distinct from the Rays; the ordinal name of 
d 
cies, and f the generic names are given. As a sequel to 
the 8, synonyms of the ge g . this, 
to the number adopted from others, gives a total of fifty-eight 
Tepresented in our present seas; to that number, six others are super- 
added in the supplementary article on the Californian sharks. 
distribution amon three families, and in the union of the Millerian 
families of the Gaechircas Trianodontes, Galei, Scylliodontes and Mus- 
The A, lapidaria itself perhaps belongs to the Aciculide, and consequently to 
' family from the other species. : 
