1881.] THE SURVEY OF H.M.S. ' ALERT.' 69 



with by Dr. Cuiininghain) was obtained at Elizabeth Island in 

 6 fathoms, another in Trinidad Channel in 4 fathoms, and two others 

 in Puerto Rosario in 2-30 fathoms. Dana's sjjecimen was obtained 

 by Lieut. Case on the coast of Patagonia at a depth of 50 fathoms, 

 and was only 1-1^ line in length; the length of the largest individual 

 collected by Dr. Co[)pinger is 5 lines. It was previously unrepresented 

 in the British-Museum collection. 



ACANTHOCYCLUS GAYI. 



Acanf.hocyclus gayi, M.-Edw. & Lucas, in d'Orbigny's Voy. Amer. 

 merid. vi. V,\\ p. SO, pi. xv. fig. 1 (1843); Nicolet in iGay's Hist. Chile, 

 Zool. iii. Cr. p. 1/6 (1849) : Dana, Cr. U.S. Expl. Exp. xiii. p. 295, 

 pi. xviii. fig. 4 (1852); Heller, Reise der Novara, Crust, p. 70 (1865); 

 Cunningham, /. c. p. 494 (1871). 



1 Plagusetes elatus. Heller, Verb. zool. -hot. Gesellsch. Wien, xii. 

 p. 522 (1862). 



A single male individual is in the collection, obtained on the beach 

 at Isthmus Bay, in the Straits of Magellan. It has long been known 

 as inhabiting the Chilian seas, and was taken by Dr. Cunningham 

 plentifully at Lota. 



Leptograpstjs variegatus. 



Cancer variegatus, Fabr. Ent. Syst. ii. p 450 (1/93). 



Grapsus variegatus, Latr. Hist. Crust, et Ins. vi. p. 71 (1803) ; 

 M.-Edwards, Hist. Nat. Crust, ii. p. 87 (1837); Nicolet in Gay's 

 Hist, de Chile, iii. p. 167 (1849); Miers, Cat. New-Zeal. Crust, 

 p. 36 (1876). 



Grapsus personatus, Lam. Hist. Anim. sans Yert. v. p. 249 (1818). 



Grapsus strigilatus. White, in Gray's Zool. Miscell. p. 78 (1842). 



Grapsus planifrons, Dana, Proc. Ac. Nat. Sci. Phil. p. 249 (1 851); 

 U.S. Expl. Exp. xiii. Cr. i. p. 338, pi. xxi. fig. 3(1852) ; Cunning- 

 ham, /. c. p. 493 (1871). 



Leptograpaus gayi, M.-Edwards, Ann. Sci. Nat. ser. 3, Zool. xx. 

 p. 172(18.53). 



Two females were obtained on the shore at the island of St. 

 Ambrose, in the South Pacific. This locality is of interest, as never 

 having been previously visited by the carcinological collector. This 

 species, however, is known to range from the Australian to the 

 Chilian seas. 



Chasmognathus granulatus. 



Chasmagnathvs graniilatus, Dana, Pr. Ac. Nat. Sci. Phil. p. 251 

 (1851) ; U.S. Expl. Exp. xiii. Cr. i. p. 364, pi. xxiii. fig. 6 (1852); 

 M.-Edw. Ann. Sci. Nat. ser. 3, Zool. xx. p. 200 (1853). 



Helice granulata. Smith, Tran?. Conn. Acad. ii. p. 37 (1869). 



Three examples (males), in somewhat mutilated condition, were 

 collected at Rat Island, Monte Video. Dana's specimens were from 

 Rio de Janeiro ; from which locality are specimens in the British- 

 Museum collection, from the Smithsonian Institution. Professor 

 Smith (/. c) gives Rio Grande as a locality for the species. 



