132 



slioiicr thaii the free part (S. Kemp, 1. c Fig. :V/), more rarely 

 both are iiearly of the saiiie lengtli and it is only a very rare 

 exception when the free portion of the ramus is shorter than 

 the rest. So in 38 of 63 specimens from the Oostersehelde (i. e. 

 in 60 per cent.) the fused portion proved to be distinctly shorter 

 than the free, in 21 (i. e. in 33 per cent.) both portions were 

 abont of ecjual length, but only in 4 specimens (i. e. in 6,3 per 

 cent.) the coalesced portion was distinctly longer than the rest. 

 As regards the other localities, in 21 of 33 specimens (i. e. in 64 

 per cent.) the fnsed part was clearly shorter than the free, in 7 

 (i. e. in 21 per cent.) both portions were nearly of eqnal length 

 and in 3 ova-])earing females from Brixham and in an adult 

 female (Fig. l.s) withont eggs from the Straits of Calais (i.'e. in 

 12 per cent.) the free portion was distinctly shorter than the rest, 

 in one specimen from Brixliam, finally, the shorter ramns was 

 fused to the outer fiagellum almost for its whole length. 



The antennal scale has the same form as in the typical species. 

 Mandibuhir palp two-jointed (8. Kemp, 1. c. Fig. Sh). 



The external maxillipeds and the legs agree with those of tlie 

 typical form, except the legs of the 2'^ pair. 



These legs reach as far forwards as in the Scandinavian spe- 

 cimens; a rare exception, no doubt, is presented by an adult 

 female, long 62 mm., from Le Portel, for in this specimen the 

 left carpus extends only with one-fourth, the right only with 

 one-fifth its length beyond the antennal peduncles, so that the 

 left chela projects only with the fingers, the right only with 

 one-third of the fingers beyond the scales. Otherwise as in the 

 typical species, in the variety uifermedia the (Xirpus of 2^ legs 

 appears al most f/citeralh/ a Hf tic sJiortcr tJiait f lic clichi (Fig. U), 

 rarely just as long, but it is quite a little wonder to observe a 

 specimen in which the carpus is longer than the chela. In 56 of 

 the 66 specimens from the Oostersehelde, i. e. in 85 per cent., 

 the carpus proved to be slightly shorter than the chela and only 

 in 9 specimens, i. e. in 14 per cent., it was about as long as the 

 chela, though not longer; as regards the specimens from the otlier 



