174 
THE VOYAGE OE H.M.S. CHALLENGER. 
Neptunus ( Neptunus ) sanguinolentus. 
Cancer sanguinolentus, Herbst, Naturgescb. der Krabben u. Krebse, vol. i. p. 161, pL viii. figs. 
56, 57, 1782. 
Lupa sanguinolenta, Milne Edwards, Hist. Nat. Crust., voL i. p. 451, 1834; Atlas in Regne 
Animal de Cuvier, ed. 3, Crust., pi. x. figs. 1, 8. 
Portunus ( Neptunus ) sanguinolentus, de Haan, Crust, in v. Siebold, Fauna Japonica, p. 8, 1833. 
Neptunus sanguinolentus, A. Milne Edwards, Arcbiv. Mus. Hist. Nat., vol. x. p. 319, 1861 ; 
and references to literature. 
Specimens were obtained at the following localities : — On the South Australian Coast, 
2 to 10 fathoms, April 1874 (a young male); Ternate, October 15, 1874 (a female); 
Sandwich Islands, off Honolulu, 16 to 20 fathoms (a fine adult male), also several 
specimens from the market at Honolulu ; Hawaii (a male). 
Adult d . Lines. Millims. 
Length of carapace, . . . . . . . 30 63 5 
Breadth to base of lateral epibrancbial spine, nearly . . . 53 112 
The areolated colour-markings of the carapace may vary in size and distinctness, but 
the three large, equidistant, irregularly oval and usually ocellated spots which ornament 
the cardiac and branchial regions are very constant and characteristic of this species. 
b. Carapace narrower ; antero-lateral margins forming with the frontal margin an 
angle or a curve with short radius. Lateral epibrancliial spine well 
developed, as in the typical Neptuni. 
Subgenus Amphitrite . 1 
Neptunes angulaires, A. Milne Edwards, Archiv. Mus. Hist. Nat., vol. x. p. 325, 1861. 
The following are species which have been described since the publication of the 
monograph of A. Milne Edwards in 1861, or are not included in that memoir : — 
Neptunus exasperatus (Gerstsecker). Puerto Cabello, Venezuela. (Perhaps a 
species of the subgenus Achelous.) 
Neptunus transversus (Stimpson). Mexico ; Manzanillo. 
Neptunus tumidulus (Stimpson). West of Tortugas and Conch Peef, 37 to 40 
fathoms. 
Neptunus acuminatus (Stimpson). Panama. 
Neptunus panamensis (Stimpson) = Achelous paucispinis, Lockington. Panama ; 
California. 
Neptunus vocans, A. Milne Edwards. Cape Verdg Islands. 
Neptunus ventralis, A. Milne Edwards. Guadeloupe. 
1 This name bad been previously used by Muller, for a genus of Polychsetous Annelida. 
