Boone, Crustacea, Cruises of ''Eagle" and "Ara/' 1921-28 167 



Neptunus sayi Stimpson, Ann. Lye. Nat. Hist. N. Y., vol. 7, p. 92, 

 I860.— A. Milne Edwards, Arch. Mus, Hist. Nat., vol. 10, p. 317, 

 pi. 29, figs. 2a, 2b, 1861. — Stimpson, Bull. Mus. Comp. Zool., vol. 

 2, p. 147, 1870-71. — Smith and Harger, Trans. Conn. Acad. Arts 

 and Sci., vol. 3, p. 26, 1874. — Kingsley, Proc. Acad. Nat. Sci. 

 Phila., p. 319, 1878 ; op cit., p. 398, 1879.— A. Milne Edwards, 

 Miss. Sci. Mex., vol. V, p. 210, 1879.— S. I. Smith, Trans. Conn. 

 Acad. Arts and Sci., vol. 5, p. 121, 1879. — A. Milne Edwards and 

 Bouvier, Mem. Mus. Comp. Zool., vol. 48, p. 311, 1923. 



Portunus sayi Rathbun, Bull. Labr. Nat. Hist. State Univ. Iowa, p. 

 276, 1898 ; Ann. Inst. Jamaica, vol. 1, No. 1, p. 22, 1897 ; Amer. 

 Nat., vol. 34, p. 140, 1900. 



Portunus (Portunus) comigatus (Pennant). 



Plate 57. 



Diagnostic characters : Carapace suboval, upper surface entirely 

 covered by transverse beaded rugae, giving it a wrinkled appearance ; 

 anterolateral margin five-toothed. 



Type: Pennant first described this species from the shores of the 

 Skie, opposite to Loch Jurn, England. 



Color: In life this species is yellowish-brown, with streaks of red 

 on the back. 



Habits : It is predatory and a strong swimmer. 



Distribution : Known from the coasts of Ireland, England, south- 

 ward on the European coast to the Mediterranean Sea ; also at the 

 Azores. Pelagic. Also in Japanese waters, the Australian seas and 

 a variety from the Red Sea. 



Material examined : One male, dredged in 19 f ms., grassy bottom, 

 10 miles south of Cagliari, Sardinia, July 23, 1927, by the ''Ara," 

 "William K. Vanderbilt, commanding. 



Technical description : Carapace oval, nearly subcircular, 32 mm. 

 long, 36 mm. maximum width, upper surface moderately convex, en- 

 tirely covered by broken, transverse rugae which are microscopically 

 granulate and are margined on the ribs by regularly placed setae. 

 Behind the frontal border are two especially prominent, short, arcu- 

 ate rugae, one behind the other ; there are also three especially promi- 

 ment rugae on the mesogastric region, two crossing the mesocardiac 



