4 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



Sta. No. 263A. 3 males (17-28.5 mm), 3 females (21-28.5 mm), 

 Sta. No. 264A. 1 male (25 mm), 3 females (23-25.5 mm), Sta. No. 

 265A. 1 female (40 mm), Sta. No. 268A. 1 female (41 mm), Sta. 

 No. 270A. 



All trawled, depths from 35 to 368 m, bottoms mostly mud, but 

 one station (202B) of coral and sand. 



Remarks. — The above specimens differ from Leene's (1938) de- 

 scription of the forma typica only in the following minor particulars: 



1. On the anterior border of the arm of the chehped, Leene 

 describes two spines and a tubercle. In most of the present specimens, 

 three spines are present, but in the larger specimens there are often 

 four. 



2. The upper border of the carpus of the second pair of walking 

 legs bears either no armature or microscopic spinules. Leene describes 



Figure 1. — Charyhdis hoplites: frequency 

 distribution diagram of L/B carapace 

 ratios on 104 individuals (L/B ratios are 

 grouped into units 0.01 apart, each taken 

 from 0.05 below graphed values to 0.04 

 above). 



54 56 58 0.50 0.62 0.63 



L/B RATIO CARAPACE 



the forma typica as bearing either three spinulessor being unarmed 

 and the var. pusilla as bearing microscopic spinule. 



3. These specimens usually have a very small cluster of granules 

 on the carapace posterior to each mesobranchial area. 



Sixteen individuals were noted with carapaces narrower than the 

 remainder, and two more appeared when samples were measured. 

 These were from eight stations, and in six cases these were stations 

 from which typical C. hoplites were recorded. Apart from carapace 

 proportions the specimens did not appear to differ in any way from 

 the remainder. 



