513 



CRUSTACEA. 



BY 



E. J. MTEKS. 



The collection of Crustacea made in the Indian Ocean, if less 

 numerous in species and less interesting than those obtained on the 

 Australian coasts, contains a larger number of rare or undescribed 

 forms than might have been expected, when it is remembered that 

 the localities are all included in a region whose Crustacean fauna 

 has been repeatedly explored by the collector. Of the Islands, 

 however, visited by Dr. Coppinger, the Amirante, Providence, and 

 Glorioso groups have been hitherto terrce incognitas to the carcino- 

 logist, and but little has been hitherto reorded of the Crustacean 

 fauna of the Seychelles. 



It may be useful (as in the previous part of this Report) to men- 

 tion here the principal memoirs which have appeared since the 

 publication of Milne-Edwards's ' Histoire naturelle des Crustaces ' 

 (1834-40) which deal specially with the Crustacean fauna of the 

 East-African coast from the Eed Sea to the Cape of Good Hope, and 

 of the Alascarene Islands and other islands belonging to the same 

 geographical subregion. 



In 1843 appeared Dr. F. Krauss's valuable account of the South- 

 African Crustacea*, containing a complete enumeration of the then 

 known Podophthalmia and Edriophthalmia of the Cape Colony and 

 Natal, a work which even now forms the standard of reference for 

 all students of the South-African Crustacea. Since its publication 

 few additions have, indeed, been made to our knowledge of the 

 South-African marine and littoral Crustacea beyond the descriptions 

 of certain new species by Dr. W. Stimpsonf. 



In 18(51-62 appeared Dr. C. Heller's standard work, " Beitrage zur 

 Crustaceen-Fauna des rothen Meeres" J, which added largely to what 

 was previously known from the writings of Milne-Edwards, Eiippell, 



* ' Die siidafrikanischen Crustaceen,' Stuttgart (1843), 4to. 

 t Proc. Acad. Nat, Sci. Philadelphia. 1857-60. 



j: Sitzungsber. Akad. Wissenschaft. Wien, xliii. (1) p. 297, xliv. (1) p. 241 

 (1861-62). 



2l 



