1904.] 



POLYCn.ETA OF THE MALDIVE ARCHIPELAGO. 



27: 



C, 37 mm.* The size of the fore body, exclusive of the parapodia, 

 is nearly that of C. variopedatus, viz. 15 mm. x 11 mm., while 

 the total length of the latter species is about 115 mm. 



The numbers of segments composing each region are 13, 5, and 

 22 respectively, the thirteen segments of A bearing eleven para- 

 podia t. The cephalic segments and their eyes and tentacles are 

 exactly as in C. variopedatics. The parapodia differ, however, in 

 being longer, and, as they are slender, their length is exaggerated 

 in appearance. In C. variopedatus the 1st is the shortest and 

 the 7th (sometimes the 6th) the longest, the 9th or last being a 

 little longer than the 1st. In C. longimanus, on the other hand, 



Text-fio-. 38. 



II. -# -3 ni.nt. 



III. 5) 



X 5 



7m. m. 



M. 6-7 m.m.. 

 . 6 5 m.m. 



5 ■ 5m.Tri. 



U. 5 



<-/-. 



C. variopedatus. C. longimanus. 



Diagrammatic representation of lengths of parapodia of tlie body-region A 

 in G. variopedatus and C. longiynamis. 

 Roman numerals are the numbers of the feet whose lengths are given in mm. 

 T!ie inner curved lines represent the outline of the side of the body, the outer 

 angular lines the curves made by the tips of the parapodia. Five times the 

 natural size, but the whole length of each parapodium is not drawn, only its 

 excess over that of the shortest being represented by the horizontal lines. 



the 1st is almost as long as the longest — the 9th, the 4th being 

 the shortest and the 11th slightly shorter than the 9th. This 

 difference between the two species may be shown graphically by 

 the diagrams of text-fig. 38. 

 . The first parapodium is thus longer than the last, which is 



* I follow Joyeux-Laffuie in his definitions of the three hodj-'regions which I 

 designate A, B, and C as being more convenient and better than writing their names 

 in full, and avoiding such terms as " thoracic " and " abdominal." 



t This is possible in an extreme variation of C. variopedatus, but it is unlikely 

 that the only specimen found in this large collection should be such a rare 

 abnormalitv. 



Proc. Zool. Soc— 1904, Vol. I. No. XVIII. 



18 



