474 Capt. A. F. McArdle— Some Results 



the second pair about two thirds as long as the first. The 

 first two pairs are strongly spinose, the spines being arranged 

 in longitudinal rows. The last two pairs are shorter and 

 much more slender, and have no spines, with the exception of 

 one at the distal extremity of the merus. Dactyli nearly 

 straight and hirsute. 



Colour in spirit dull ivory-white. 



Adult J. 



millim. 



Length of carapace to base of rostrum 28 



Greatest breadth 32 



Length of rostrum 5| 



„ gastric spine 13 



„ branchial spine 8 



„ chelipeds 77 



„ first ambulatory legs 122 



A perfect adult male, dredged at Sta. 267 in about 500 

 fathoms, in lat. 7° 02' 30" N., long. 79° 36', off the west coast 

 of Ceylon. 



Of the species heretofore described it is most like G. Smithii i 

 but differs in the shape and character of the rostrum, in 

 having no supraorbital spine, in possessing a large branchial 

 spine, and in the description of the basal joint of the antennas. 



From C. Murrayi it can be easily distinguished by its 

 rostrum, by the absence of spines on its third and fourth 

 ambulatory legs, by having no prasorbital spine, and by its 

 shorter and more robust eyes. 



From C. Suhmi it differs in its shorter and more robust 

 eyes, in its general appearance, the regions of the carapace 

 being much better defined, in the general arrangement of the 

 spines, and by the rostrum. 



A figure will be given in an early issue of the " Illustrations 

 of the Zoology of the R.I.M.S. ' Investigator.' " 



OXYSTOMA. 



Fam. Dorippidse. 

 Subfam. Dobippinx;. 



Ethusa, Eoux. 

 Ethusa hii'suta, sp. n. 



Carapace subquadrilateral, flat, with its length equal to its 

 extreme breadth. It is expanded, but not greatly so, over 

 the branchial regions, and the lateral convergent borders are 



