74 
peduncle. Exopodites are present on the second maxillipeds, 
and usually also on the third ; they are usually present on the 
thoracic legs, but are sometimes absent from some or all of them. 
Podobranchiae are never present on the thoracic legs (only in 
some species of Haliporus is there a rudimentary podobranch 
on the first pair). Arthrobranchiae in a double series.” 
Gen. Penaeus, Fabricius. 
1798. Penaeus, Fabricius. Supplementum Ent. Syst., p. 408. 
1900. Penaeus, M. J. Rathbun, Proc. U.S. Mus., Vol, XX: 
p. 310. 
1901. Peneus, Alcock, Catal. Indian Macrura, p. 13. 
The genus has been divided into several subgenera, but the 
material here handled does not lend itself to a discussion of the 
characters by which these sub-divisions are distinguished. 
Penaeus monodon, Fabricius. 
1798. Penaeus monodon, Fabricius, Supplementum Ent. Syst., 
p. 408. 
1803. Penaeus monodon, Latreille, Hist. Nat. Crust. et Ins., 
Vol: VI., pp. 246; 249. 
1837. Penaeus monodon, Milne-Edwards, Hist. Nat. Crust., 
Vol. 11, p. 406: 
1843. Penaeus monodon, Krauss, Siidafrik. Crust., p. 55. 
1849. Penaeus semisulcatus, de Haan, Crustacea Japonica, 
decas sexta, p. 190, Pl. 46, fig. 1. (Penoeus on 
plate.) 
1852. Penaeus carinatus, Dana, U.S. Expl. Exp., Vol. XIIL., p. 
602, Pl. 40, fig. 2. 
1881. Penaeus monodon, Bate, Ann. Nat. Hist., Ser. 5, Vol. 
VIIL., p. 178, Pl. 12, fig. 5 vp (up on plate). 
1888. Penaeus monodon, Bate, Challenger Macrura, Reports, 
Vol. XXIV... p. 250, Pl. 34, fig. a: 
1888. Penaeus semisulcatus, de Man, Journ. Linn. Soc. London, 
Vol; MXM, ip. 284. 
1892. Penaeus monodon, de Man, Max Weber’s Reise in Nie- 
derl. Ost-Indien, Vol. I1., p. 513. 
1900. Penaeus monodon, Kishinouye, Journ. Fisheries Bureau; 
Tokyo, Vol... VITL,. p. 15,1) Pl2; fp. gy ees 
3, 3a- 
Latreille adds nothing to Fabricius except the suggestion 
that the species figured in Seba’s Thesaurus, Vol. III., Pl. 17, fig: 
