Historical Account of Testaceological Writers. 169 
KLEIN. 
The first work published by this author which it falls within our 
province to notice is his " Descriptiones Tubulorum Marinorum," 
containing nine plates, which represent chiefly different species of 
JSelemnitce ; but he notices also various species of recent Testacea, 
as Solenes, Dentalia, &c. in order to complete his arrangement of 
the tubular coverings of animals. But the principal testaceo- 
logical performance of this author was his " Tent amen Methodi 
OstracologiccE" a work (as its title implies) written professedly 
with views to the establishment of a system, but which, though 
the composition of a very able naturalist, certainly does not pos- 
sess the merit of practical utility. The general divisions (forming 
parts, sections, classes, and genera) are too numerous, and, what is 
worse, species are constituted in some instances without being 
referable to any genus; and in one of the parts there is a solitary 
genus without any class. The specific descriptions, however, arc 
for the most part sufficiently full and precise, and there are fre- 
quent references to Aldrovandus, Gesner, BuonannL, Lister, and 
Rumphius. The work contains twelve plates; the figures are one 
hundred in number, but exhibit a harshness which is not com- 
pensated by any extraordinany correctness, and most of them 
are copies. A subjoined dissertation, " De Formations, Cremento 
et Coloribus Testatum" deserves to be considered as the best part 
of the volume, for it contains many physiological remarks of an 
original and curious nature. This subject, though taken up by 
so early an author as Buonanni, had not hitherto been entered 
into so much as the nature of it demanded. — Klein wrote also on 
the Lepas anatifera, in the Memoirs of the Xat. Hist. Society of 
]}antzic. 
VOL. VII. z JO. 
