1898.] FBOM THE SOUTH tACiriC. 467 



Oi-tmann suspects (Semon's Torschungsreisen in Austral.' loc. cit), 

 a mistake about these specimens, dentatus thus becomes a synonym 

 for lamarchii Leach, and rufescens Heller is next in order of 

 priority among the names for forms without an epibi'anchial spine. 

 The specimens of var. Jiinhriatus nov. are all small (carapace 

 4-5 mm. loug) and are of a white or yellow colour with red spots. 



There is a very distinct difference in coloration between the 

 E.otuma and Funafuti specimens of this species, the latter being 

 much lighter in colour than the former. This diffei'ence runs 

 through all the varieties, and I am informed by Mr. G-ai-diner 

 that the specimens have not undergone much change of colour 

 since they were collected. 



Five males and tA\o females from Rotuma ; two males and five 

 females from Funafuti. 



Var. asiaticus (Leach), 1820. (Plate XXXVI. lig. 1 b.) 



Eight males and four females from Eotuma; two females from 

 Funafuti. 



Y-dv. Jimbriatus, uov. (Plate XXXVI. fig. 2.) 



One male and two females from Botuma ; one male and oue 

 female from Funafuti. 



Var. rufescens (Heller), 1861. 



Five males and seven females from Eotuma ; four males and 

 three females from Funafuti, 



Subtribe HIPPINEA. 

 Family Hippidje. 

 Genus Eemipbs Latr., 1806. 

 21. Eemipes PACiwcus Dana, 1852. (Plate XXXVI. figs. 3 a-i.) 



Remipes pacificus, Dana, U.S. Expl. Exped., Crust, i. p. 407, 

 pi. XXV. fig. 7 (1852) ; de Man, Zool. Jahrb. ix. Syst. p. 476 (1897), 

 X. Syst. p]. xxxiii. fig. 53 (1898). 



Memipes testudinarius, Miers, J. Linn. Soc. Lond., Zool. xiv. 

 p. 318, pi. V. tig. 2 (1879). 



Bemijjes adactylus, Ortmann, Zool. Jahrb. ix. Syst. p. 228 (1897). 



Of forty-one specimens of this species from Funafuti all had 

 the normal number of joints to the second antennae. Of seventy- 

 six specimens from Eotuma no fewer than eight, or more than ten 

 per cent., showed abnormalities. In oue of this eight the two sides 

 varied alike, both having a 3-jointed fiagellum, as opposed to the 

 two-jointed noi'mal form. Five of the remaining seven had the 

 fiagellum of the left antenna normal, while, in the right, one 

 specimen had the penultimate joint partially divided into two ; 

 two specimens had three joints, one had four joints, and one had 

 five joints. The remaining two abnormal specimens had the right 

 antenna normal, while in the left the flagellum was three-jointed. 

 One of these latter was the only abnormal male, all the rest beir,'; 



