168 On the Geographical Distribution of Crustacea. 
Arr. XV.—On the Geographical Distribution of Crustacea ; 
by James D. Dana. 
(Continued from vols. xvi, xviii, and xix.) 
Havine in the preceding pages on the geographical distribution 
of Crustacea, treated of their distribution according to zones 
temperature, I now take up the other branch of the subject.— 
The Distribution of Crustacea according to Geographical 
rovinces. 
Tn presenting a series of tables in which the distribution of the 
Genera is given, I divide the surface of the globe, for marine z0- 
ological geography, a ae sections, the Occidental, the Afri 
co-European, and the tal ; the first, including the east and 
west coasts of pedis ad adjoining islands ; the second, the 
eastern side of the Atlantic Ocean, the coasts of Europe, and also 
of Africa as far as the Cape of Good Hope ; the third, embracing 
the Indian Ocean, and its coasts and islands, the East Indies and 
the Pacific Ocean, w ith its coasts and isla nds, exclusive of the 
western coast of kena kid the neighboring islands. ‘The to- 
tal number of species in each is given in a separate column. 
make further groupings or subdivisions, by which the several 
portions of these great regions are distinguished. These general 
tables are not here copied from the veserk s Report, and vital 
ee ae therefore need not be giv 
Th wing is an abstract of corti Sof the results 
The aitisidh A, 65 ar the Atlantic and Pacific coasts and 
islands of America ; B, the European and West African ir 
and islands, from Cape ‘Horn to Greenland inclusive ; and C, t 
coasts and islands of the Indian and Pacific Oceans (America jr 
clude 
I, BRACHYURBA, 
MatrorpEs. A. B ©. 
Maiinea, = - - - 69 - 24(1a)f - 63(19ft 
Parthenopinea, - - - 1 ee ite: 
Oncininea, ‘ . - 0 2 0 s 2 
Total Maioidea, - = - 70 29 (1) 104 (1) 
CANCROIDEA, 
Cancride, - - - 10 - 3 - 
— . . pls Sea aigycs 199 (18) 
is - i 7 = 5 i 52 (1 b) 
> octunii, Platyonychide an f é : 
Podophthalmide, 13 19 (1 a) 54 (1 a) 
Telphusinea, - - - . £08 - 7 
Cyclinea, - - - Po ee - 0 
Total Cancroidea, - 54 35 (2) 243 (3) 
* The discrepancies between the enumeration here and the summaries of the pre 
pes Sogenae arise from species omitted in one or both, on account of the wnoer 
— of th — row amg hat 1 
+ la ~ceitltialedine e rspe aR te 3 under A; and 10, ¢ 
of the | 63, is id is identical with a species under is, bolo 
