224 



Mencethius porcellus, Wlnte, 1. c. 



Upper part of carapace very irregular all over ; the front, with three 

 teeth arising froin the šame, plain ; the middle one very much elon- 

 gated and bent down at the end ; the side margin with several largish 

 crenations ; base of fcre-legs with two or three tubercles on the out- 

 side. 



Blastia monoceros, Leach MSS. 



Hab. Isle of France (malė and female). 



Family Cancerid^e. 

 Genus Act^a, De Haan. 



ACT^A NODULOSA, Wliite, 1. c. 15. 



Carapace and legs aliove thickly covered \vith rounded tubercles, 

 largest on fcre-legs and on fore-margins ; a tubercle on the under 

 orbit ; the carapace in the middle longitudinally impressed ; the pos- 

 terior edge is straight and furnished with two transverse lines of 

 small tubercles; claws, both upper and under, with longitudinal 

 keels, horn-coloured. 



Hab. Isle of France. Coli. Brit. Museum. 



AcT^A CARCHARiAS, White, 1. c. 15. 



Carapace and legs above covered very closely \vith sharp rough 

 tubercles ; on the front the tubtrcles are much smaller, the upper 

 surface divided into difFerent divisions by tran.sverse and longitudinal 

 lines ; ujiper edge of legs serrated. 



Hab. Australia (S\vau River). 



This species is nearly allied to Acteea calculosa {Cancer calculosus, 

 Ed\v. Crust. i. 378). 



Atergatis, De Haan. 



Atergatis sinuatifrons, White, 1. c. 14. 



Carapace vvith the marginai limb very entire and rather thick, of 

 a uniform brownish red. Front \vith three lobes, each notched in 

 the middle. Fingers of fore-legs \vith tufts of hair, black, extreme 

 tip white. Width of carapace four inches. 



Hab. Mauritius. Coli. British Museum. Presented by Lady 

 Frances Cole. 



Atergatis subdivisus, White, 1. c. 14. 



Carapace \vith the marginai limb divided by four very indistinct 

 lobes ; greater part of top of carapace deep red, with yellowish spots ; 

 behind paler. Fingers black, base of moveable finger j'ellow. Front 

 of carapace -vvith two straightish lobes, sinuated close to the eye. 

 \Vidth of carapace three inches eight lines. 



Hab. Philippine Islands. From Mr. Cuming's collection. 



Near A. marginatus. 



Atergatis asperimanus, White, 1. c. 14. 



Carapace \vith its latero-anterior sides ^^ ith a cutting edge, part of 

 carapace behind this punctate ; the ręst of upper surface almost quite 



