574: ME. L. A. BORKADAILE ON CRUSTACEANS [May 22, 



those of the anterior ; chelipeds much larger than the last three 

 legs, nearly as long as the rostrum ; fingers shorter than the palm, 

 fairly stout, enclosing a space at the hase, with interlocking teeth 

 at the tip ; moveable finger with an isolated blunt tooth near the 

 proximal end ; walking-legs with the joints irregularly swollen ; 

 dactyles somewhat sickle-shaped, bearing spines and a few hairs 

 below." 



The third maxilliped and the abdomen of the male are shown in 

 figs. 1 a and 1 b. 



Colour in spirit, white. 



Total length 13*5 mm. Length of carapace to base of rostrum 

 S'5 mm. Greatest breadth 7 mm. 



Funafuti ; one male. 



Genus Men^thius H. M.-Edw., 1834. 



8. Men.ethius monoceros (Latr.), 1825. 



Pisa monoceros, Latr. Encycl. x. p. 139 (1825). 



Mencethius monoceros, II. M.-Edwards, II. N. Crust, i. p. 339 

 (1834) ; Alcock, J. As. Soc. Beng. lxiv. 2, p. 197 (1895). 



Mencethius anr/ustus, depressus, subserratus, tuberculatum, areola tus, 

 and inornatus, Dana, U.S. Expl. Exped., Crust, i. pp. 121-125, 

 pi. iv. figs. 5-7 & pi. v. figs. 1-3 (1852). 



Funafuti ; two males. 



The carapace in both specimens has the tubercles low and rounded 

 but fairly numerous. 



Subfamily Pisin^e. 

 Genus Hyastenus White, 1847. 



9. Hyastenus elegans Miers, 1836, var. (Plate XL. fig. 2.) 



Jfi/astenus elegans, Miers, ' Challenger ' Brachyura, p. 58, pi. vi. 

 fig. 3 (1886). 



The specimens differ from the type in the following parti- 

 culars : — 



1. The horns are more slender and set wider apart at the base. 



2. The larger tubercles of the carapace are more rounded ; not 

 so sharp. 



3. The arrangement of tubercles in the fore part of the carapace 

 is somewhat different (see figure).* 



Should it be thought advisable to give this variety a name, that 

 of tenuicomis would be suitable. 

 Roturna ; two males, one female. 



Genus Tylocarcinus Miers, 1 879. 



10. Tylocarcinus styx (Herbst), 1803. 



Cancer styx, Herbst, INaturges. Krabb. u. Krebse, iii. 3, p. 53, 

 pi. lviii. fig. 6 (1803). 



