CRUSTACEANS. 63 



ISOrODA. 



ASELLID^. 

 J^RA PUBESCENS, Dana. 



Jara puhescens, Dana, UDited States Exploring Expedition, Crustacea, 744, pi. 49, 

 fig. 9, 1852. 



Associated with the following species npou rockj' beaches, Kerguelen 

 Islaud. Dana's specimens were from N^assau Bay, Tierra del Fuego. 



SPH^ROMID^. 



Sphjeroma gigas, Leach. 



Sphceroma gigas, Leach, Dictionnaire des Sciences naturelles, vol. xii, 346 (teste 

 Desmarest and Edwards). — Desinarest, Considerations g^n^rales sur la classe des 

 Crust., 301, 1825. — Edwards, Histoire naturelle des Crust., vol. iii, 205, 1840. — 

 White, List of Crustaceans in British Museum, 102, 1847. — Dana, United States 

 Exploring Expedition, Crustacea, 775, pi. 52, fig. 1, 18.52. 



A large series of specimens of all sizesfrom 5™™ to 29"™ in length were 

 obtained, all the larger si)ecim ens from the gullets of terns, the smaller 

 ones from rocky beaches. All the specimens agree with the typical 

 'jigas^ and do not seem to approach the S. lanceolata, White, (Annals 

 and Magazine Nat. Hist., vol. xii, p. 345, 1843, and List of Crustaceans in 

 Biitish Museum, p. 102, 1847). 



SEROLIDJ^. 



SEROLIS LATIFRONS, White. 



Scrolls latifrons. White. List of Crust. British Museuao, 108, 1847 (no description); 

 Voyage of the Erebus and Terror, Crust., pi. 6, fig. 12. — Miers, Annals and Maga- 

 zine Nat. Hist, iv, vol.xvi, 74, 1875. 



Itocky beach, Kerguelen Island. 



Only one specimen was obtained. This is a female, and considerably 

 larger than the British Museum specimen. Our specimen differs some- 

 what in outline and proportions from W^hite's figure; but the differences 

 are very likely due to sex, although the sex of White's specimen is not 

 stated. The antennae are smaller than given in White's figure, the 

 peduacle being scarcely longer than the head and the first thoracic seg- 

 nicnt. The peduncle of the antennula reaches beyond the lateral angle 



