69 
useful to quote again the characters used by Professor E. L. 
Bouvier for distinguishing the Ostracogastrica from the 
Hapalogastrica, the other division of the Lithodinea. The 
Ostracogastrica in general have the “‘lateral pieces of the 
pleon absolutely entire; acicle spinulose or spinose, rarely 
laminar, simple, sometimes rudimentary.” The genus Phyllo- 
lithodes, Brandt, is, however, an exception, having some 
affinities with the other tribe, a point which I misunderstood 
in my previous quotation from Professor Bouvier’s memoir 
(ann. sci Nat. Ser. 6, Vol. I., p20. 1eGp): 
The genus Lithodes was instituted by Latreille in his Genera 
Crustaceorum et Insectorum, Vol. I., p. 39, 1806. Scudder 
in his Nomenclator, and Henderson in his report on the Chal- 
lenger Anomura refer to the date 1802, as given by Agassiz for 
the institution of the genus. In his Hist. Nat. des Crustacés, 
Vol. I., p. 247, 1802, Bosc quotes Latreille as expressing an 
opinion that a new genus might perhaps be required for the 
species on which Lithodes was eventually founded. This 
opinion was probably given by word of mouth. No generic 
name is suggested either in Bosc or in Latreille’s own work, 
Hist. Nat. Crust. et Ins., Vol. VI., 1803, where the subject 
is left in great confusion. 
Gen. Neolithodes, Milne-Edwards and Bouvier. 
1894. Neolithodes, A. M.-Edw. and Bouvier, Bull. Soc. Zool. 
BrancesViol, XTX.) ps 121. 
1894. Neoltthodes, A. M.-Edw. and Bouvier, Brachyures et 
Anomoures de l’Hirondelle,, fasc. 7, p. o&. 
1895. Neolithodes, Bouvier, Ann. Sci. Nat. poeta 7 Vole saVLET., 
Pp. 177. 
1896. Neolithodes, Bouvier, Ann. Sci. Nat., Ser 8, Vol. I., 
Pp: 6}/20; 22. 
1898. Neolithodes, Ortmann, in Bronn’s Thierreich, Vol. V., 
Lieferung 51, p. 1148. 
As a character common to this genus and Paralithodes, 
Brandt, Professor Bouvier states that “the five pieces of the 
second pleon-segment are contiguous, but separated by distinct 
sutures.” He notices that according to Smith there are 
only three pieces in the second segment of Neolithodes A gassizt, 
but suggests that ‘‘ the author has probably not taken account 
of the marginal pieces.”” Nevertheless, in the South African 
specimens I cannot find more than two distinct sutures in the 
second segment, the lateral pair having a very indefinite 
appearance. 
B. 649. E 
