REPORT ON THE BRACHYURA. 
95 
referred to it in the British Museum and Challenger collection are rightly designated. 
It is much better delineated in Desmarest’s figure of Lambrus spinimanus, which is cited 
by Milne Edwards as synonymous with Lambrus contrarius. 
The Challenger example has the following dimensions : — 
Adult ? . 
Lines. 
Millims. 
Length of carapace and rostrum, 
181 
41 
Breadth of carapace, nearly .... 
17 ! 
36-5 
Length of a chelipede, .... 
441 
94-5 
Length of first ambulatory leg, nearly 
25 
52-5 
Lambrus longimanus (Linne). 
1 Cancer longimanus , $, Linne, Mus. Ludovici Ulrici, p. 441, 1764; Syst. Nat., ed. xii., 
p. 1047, 1766. 
Lambrus longimanus , Leach, Trans. Linn. Soc. Lond., vol. xi. p. 310, 1815. 
„ „ Milne Edwards, Hist. Nat. Crust., vol. i. p. 354, 1834; Atlas in Latr. 
Regne Animal de Cuvier, Crust., pi. xxvi. fig. 1. 
„ „ Miers, Ann. and Mag. Nat. Hist., ser. 5, vol. iv. p. 20, 1879. 
South of New Guinea, 28 fathoms, in lat. 9° 59' 0" S., long. 139° 42' 0" E. 
(Station 188) (two males and two females) ; Amboina, 100 fathoms (a small female) 
The specimens thus designated are certainly the Lambrus longimanus of Milne 
Edwards, as figured in the large illustrated edition of the Regne Animal de Cuvier 
(loc. cit.), but in his description of the same species in his Histoire naturelle des 
Crustaces the lateral margins of the carapace are described as “ armes d’epines tres- 
longues et legerement rameuses,” a character inapplicable to any specimens which have 
come under my observation. 
The largest of the Challenger specimens (a female) measures as follows : — 
Adult ?. 
Lines. 
Millims. 
Length of carapace and rostrum, nearly 
io! 
22 
Breadth of carapace, nearly .... 
li 
23 
Length of a chelipede, .... 
361 
77 
Length of first ambulatory leg, 
15 
31-5 
Lambrus affinis, A. Milne Edwards. 
Lambrus affinis, A. Milne Edwards, Nouv. Archiv. Mus. Hist. Nat., vol. viii. p. 261, pi. xiv. 
fig. 4, 1872. 
“ Torres Strait, August 1874 ” (an adult male). 
In this species the merus-joints of the ambulatory legs are smooth ; in the following 
{Lambrus intermedius) , they are compressed, and the last two pairs are more or less 
distinctly granulated on the margins. 
