MELVILL : THE PRINCIPLES OF NOMENCLATURE. 445 
ostralogicze sive dispositio naturalis cochlidum et concharum 
in suas classes, genera, et species.” 
Dr. Marton says about this author’s work “It has been 
objected that the general divisions, forming parts, sections, 
classes, and genera are too numerous, and, what is worse, that 
species are constituted, in some instances, without being 
referable to any genus, and that in one of the parts there is a 
solitary genus without any class.” 
A short summary of Klein’s arrangement may not be con- 
sidered out of place here :— 
He tabulates four divisions : 
I.—COCHLIDES. 
§ a. Cochlis simplex. § § 6. Cochlis composita. 
Under §@ come Nautilus, Nerita, Trochus, Strombus, Buc- 
cinum, Turbo. 
Under §§ 4 come Bulla, Porcellana (Cypraza), and Murex. 
IIlL—CONCH&. 
$a. Monoconche.  §§4. Disconchze zquales. 
§§$§c. v Disconchee inzequales. 
In § a are comprised Patella and allies. 
In §$ 6 are comprised Ostrea, Spondylus. 
In §§§¢ are comprised Terebratula and other Brachiopoda. 
III.—POLYCONCHE. 
This includes the Lepades and Chitones. 
IV.—NIDULI TESTACEI. 
This includes Balani. 
This work is of supreme importance ; indeed many writers, 
principally of the French school, advocate Klein as the father 
of the binomial system, and do not consider that his genera 
should be superseded or overlooked because not utilized by 
Linneus. They were ali utilized and recognized by H. and A. 
Adams in their “Genera of Recent Mollusca,” 1853-58, 
