Botany and Zoology. 141 
Corallines, to which we now add that of the Hydroids. Considering 
tebrate species from the North Pacific ; by mpson. Parts II and 
FV.< 16 8vo m the Proceedings of the Academy of Natural 
‘i ee 
Sciences, Tucetee 1857, and March, 1858—lIn this pamphlet, Mr. 
Stimpson notices in brief, the species of Maioid, Cancroid and Corystoid 
Crustacea obtained by him in his most fruitful North Pacific investiga- 
tions. In all there are 136 species; of which, 18 of the species of Mai- 
oids, 32 of the Cancroids, and 1 of the Corystoids, are new. Among 
em, there are the following new genera: Micropisa and Ach@opsis 
among Maioids, and Lachnopodus, Spharozius and Heteropanope among 
ancroids. 
Part V has also appeared in the Proceedings Acad. Nat. Sci, Philad., 
, uy 
(related to Gonoplacide, but eyes immoveable, &c.), Scalopidia, Rhizopa, 
Typhlocarcinus, Ceratoplaz ; Fam, Macrorrt toma, 
Ilyoplax ; ¥: i 
he Vette: ie appe 
‘The plates are executed with care and beauty, 
with a leaf of explanations. The work is well adapted for the stu- 
dent in zoology, and we could wish that the plates might be issued also: 
with English text. The internal anatomy of the 
various groups is elabo- 
