200 
THE VOYAGE OE H.M.S. CHALLENGER. 
Of the species enumerated by A. Milne Edwards, one, Portunus longipes, Risso 
( = Portunus dalyelli, Spence Bate), has since been referred to Bathynectes. The 
species designated by Kinahan, Portunus carcinoides, is perhaps identical with Portunus 
corrugatus. 
The species of this genus occur commonly in the European and North Atlantic Seas, 
in water of moderate depth, to 40 fathoms, or rarely at much greater depth ( e.g ., 
Portunus pusillus, whose occurrence in the Mediterranean dredgings of the “ Travailleur ” 
at a depth of 450 metres is recorded by A. Milne Edwards); one species, Portunus 
guadidpensis, occurs in the West Indian Seas. 
Portunus corrugatus, the only species collected by the naturalists of H.M.S. 
Challenger, is also the form with the widest geographical range ; it occurs, as noted below, 
not only in the European Seas and at the Azores and Cape Verde Islands, but also in the 
South Australian Seas and at Japan. 
Portunus corrugatus (Pennant). 
Cancer corrugatus, Pennant, Brit. Zool., vol. iv. p. 5, pi. v. fig. 9, 1777. 
Portunus corrugatus , Leach, Edin. Encycl. Lond., vol. vii. p. 390, 1814 ; Trans. Linn. Soc. 
Lond., vol. xi. p. 315, 1815; Malacostraca Podophthalmata Britannise, 
pi. vii. figs. 1, 2, 1815. 
„ „ Milne Edwards, Hist. Nat. Crust., vol. i. p. 443, 1834. 
„ ,, de Haan, Crust, in v. Siebold, Fauna Japonica, p. 40, 1835. 
„ „ Bell, Brit. Stalk-eyed Crust., p. 94, 1853. 
,, „ A. Milne Edwards, Archiv. Mus. Hist. Nat., vol. x. p. 401, pi. xxxvi. 
fig. 3, 1861. 
„ „ Heller, Crust, des siidlichen Europa, p. 86, 1863. 
„ „ Miers, Proc. Zool. Soc. Lond., p. 33, 1879. 
? ,, carcinoides, Kinahan, Dubl. N. H. Rev. Proc. of Soc., vol. iv. p. 66, pi. ix. fig. 3, 
1857. 
„ strigilis, Stimpson, Proc. Acad. Nat. Sci. Philad., p. 38, 1858. 
„ ,, A. Milne Edwards, torn cit., p. 402, 1861. 
,, subcorrugatus, A. Milne Edwards, Archiv. Mus. Hist. Nat., tom. cit., p. 402, pi. xxxvi. 
fig. 2, 1861, var. 
Off Fayal, Azores, 50 to 90 fathoms (Station 75?), a small female; Cape Verde 
Islands, St. Vincent, July 1873 (an immature female) ; Australia, Victoria, Port Philip, 
33 fathoms, Station 161 (an adult male and three small specimens) ; Bass Strait, off 
East Moncceur Island, 38 fathoms, Station 162 (an adult male and three small 
specimens), April 1874. 
The largest Australian male measures as follows : — 
Adult $ . Lines. Millims. 
Length of carapace, . . . . . . . 6| 13 - 5 
Breadth of carapace, nearly . . . . . . 8 16 5 
