ORTMANN: CRUSTACEA OF SOUTHERN PATAGONIA. 649 



Mr. Stebbing informs me that Dollfus' S. calcarea might very well be a 

 form of that, which he is inclined to take for White's S. lanceolatum. 



The question remains, whether Dollfus was justified in calling his 

 species by the name of S. calcarea Dana. Dana's species came from 

 Tierra del Fuego, but his description and figure (1852, p. 776, pi. 52, f. 2) 

 do not give any characters that warrant this identification, and considering 

 the adverse conditions by which Dana was hampered in the preparation 

 of his figures and diagnoses (see Stebbing, 1900, p. 528), we had better 

 disregard S. calcarea Dana altogether. 



As regards the outer ramus of the uropods, which is given by White 

 as an additional distinctive character of S. lanceolatum, I cannot say that 

 it is very distinct from that of E. gigas. It is lanceolate, mostly rounded 

 at the apex, but sometimes subacute, and offers about the same shape and 

 variations as in E. gigas. 



This species also belongs to the genus Exosphaeroma as defined by 

 Stebbing. 



CYMODOCEA Leach. 

 CYMODOCEA DARWINI Cunningham. 



1871 C. d., Cunningham in: Trans. Linn. Soc., v. 27, p. 499, pi. 59, 



f. i. 



1884 C. d., Studer in : Abh. Akad. Berlin, p. 18, pi. 2, f. 6. 

 1886 C. d., Beddard in : Rep. Voy. Challenger, v. 17, p. 150. 

 1891 C. d. Dollfus in : Miss. Cap Horn, v. 6, p. 65, pi. 8, f. 8. 



Localities. Mouth of Santa Cruz River, I sp. San Julian, i sp. 



Distribution. Falkland Islands ; Tierra del Fuego ; East coast of 

 S. Patagonia (off Port Desire, 47 S.) ; Kerguelen Islands. 0-127 

 fathoms. 



DYNAMENE Leach. 

 DYNAMENE EATONI Miers. 



1875 D. e. Miers in : Ann. Nat. Hist, ser. 4, v. 16, p. 73. 

 1879 D. e. Miers in: Philos. Trans., v. 168, p. 203, pi. u, f. 2. 

 1891 D. e. Dollfus in : Miss. Cap Horn, v. 6, p. 66, pi. 8, f. 9. 



Locality. San Julian, i sp. 



Distribution. -- Tierra del Fuego (region of Cape Horn); Kerguelen 

 Islands. 



