28^ Zoological Society. 



nearly parallel, the end straight ; sides with two wide, bluntish, 

 somewhat falcated appendages directed backwards, sepamted by a 

 roundish sinuation. 



Hab. Philippine Islands. Coll. Brit. Museum. From Mr. Cuming's 

 collection. 



Menoethius porcellus, White, 1. c. 



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

 teeth arising from the same, plain ; the middle one very much elon- 

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

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

 side. 



Blastia monocei'os, Leach MSS. 



Hab. Isle of France (male and female). 



Family Cancerid^. 

 Genus Act^a, De Haan. 



AcTMA NODULOSA, White, I.e. 15. 



Carapace and legs above thickly covered with rounded tubercles, 

 largest on fore-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. Coll. Brit. Museum. 



AcTJEA CARCHARiAS, White, 1. c. 15. 



Carapace and legs above covered very closely with sharp rough 

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

 surface divided into different divisions by transverse and longitudinal 

 lines; upper edge of legs serrated. 



Hab. Australia (Swan River). 



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

 Edw. Crust, i. 378). 



Atergatis, De Haan. 



Atergatis sinuatifrons. White, 1. c. 14. 



Carapace with the marginal limb very entire and rather thick, of 

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

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

 tip white. Width of carapace four inches. 



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

 Frances Cole. 



Atergatis subdivisus. White, 1. c. 14. 



Carapace with the marginal 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 yellow. Front 

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

 Width of carapace three inches eight lines. 



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



Near A. marginatus. .^ 



