1904.] POLYCH.Kl'A OF TIIK MALDIVE ARCHIPELAGO. 277 



species, but in 1 and 3 of the table the back of the uncinus is 

 more curved than in C. variopedatios (see PL XVIII. fig. 2), being 

 thus very like Marenzeller's figure for that of C cauius. 



The tube of C. longimanus is exactly like that of C. vario- 

 ■pedatas in its material. Its shape &c. cannot be determined from 

 the fragment available. 



OhtEtopterus LONGtiPES, sp. n. (Plate XIX. figs. 1, 2.) 



Of small size. No n&uropodium to the last parapodium, of the 

 first hody-region. Third body-region of feio segments, which bear 

 large and peculiarly shaped notopodia. 



Otherwise the species is like C. variopedatas in its main lines. 



Locality. Fadifliblu, Maldive Ai-chipelago, 1 5 fathoms. Bottom 

 of coral and stones. 



The body-i-egions are made up as follows : — 



A. 3 mm. x 2 mm. (exclusive of parapodia), with 9 parapodia, 



the foui'th pair of which bear stronger setje. 



B. 4 mm. long, with wings, sucker, and 3 fans as usual. 

 0. 2| mm. long, with 9 parapodia. 



The specimen is, for a Choetopterus., very small, being only 

 9*5 mm. long (exclusive of the last pair of notopodia, which add 

 about 1 mm.), and the shortness of the region C may be due to 

 immaturity. 



Unfortunately the tube was not obtained. 



The cephalic region is as in G. variopedatus. 



The first and last parapodia of A are very short, being 0'5 and 

 075 millimetre long respectively, the first being thus shorter 



Text-fig. 40. 



rrvc::^ 



Dia^-ammatic 'section of hind body of C. longipes, showing proportions 

 of the parapodia. 



than the last, as in C variopedatus. They inci-ease regularly in 

 length up to the sixth, which is 2 millimeti^es long. The last has 

 no trace of a neuropodium, and thei-e is no ridge- like rudiment 

 of the neviropodia of the preceding segments. 



The notopodia of the region C are remarkable. The-y are veiy 



