258 



ME. E. E. BEDDARD ON ANNELIDS 



stripe, which corresponds to the dorsal blood-vessel ; posteriorly 

 this lies in a groove ; on each side of the groove the integument 

 is thickened, and of the yellowish-brown colour which produces 

 the distinctive appearance of the worm ; beyond this the body is 

 translucent and colourless, the thickened area is wider anteriorly 

 and is somewhat diminished in width posteriorly ; where the 

 elytra do not meet in the middle line, it corresponds more or less 

 accurately to the bare space left by the elytra. 



The ventral side of the body is also marked by a conspicuous 

 longitudinal groove ; this commences at the 8th segment, where 

 it is considerably wider and occupied by a median elevation, which 

 reaches back about as far as the 30th segment, and gradually 

 dies away. 



The disposition of the elytra has been already referred to ; 

 they alternate regularly with cirri throughout the body, except 

 on the fourth and fifth segments, which are both provided with 

 elytra and not cirri. 



The dorsal cirri are attached, as in other species, by a swollen 

 base ; both dorsal and ventral cirri are short. 



The setse appear to me to differ but little from those of Eupompe 

 Grubei (Kinberg, loc. cit. pi. vii. fig. 35 Gr). 



The head is illustrated in PL XXI. figs. 1 and 3, and is entirely 

 characteristic. It may be noted that the cephalic lobe bears two 

 eye-spots (e 1 ) in addition to the two large eyes (e). 



Chloeia merguiensis, n. sp. (Plate XXI. figs. 2, 8, & 9.) 



The largest specimen of this Annelid measured 54 millim. in 

 length, the greatest breadth being 10 millim. 



The shape of the body is not ovoid, but elongate; this appear- 

 ance is at any rate presented by the worm when the setae have 

 been for the most part removed. 



The dorsal side of the body is covered with innumerable grooves, 

 and presents a tessellated appearance; the areas bounded by the 

 grooves are of an elongated rhomboidal shape, their long axis 

 coinciding with the long axis of the body ; the skin covering the 

 para pod ial outgrowths is for the most part smooth. Each seg- 

 ment is divided by two rather more conspicuous grooves into 

 three divisions; the middle one is wider anteriorly than posteriorly, 

 since the grooves fall obliquely and tend to approximate poste- 

 riorly ; the lateral divisions boar the parapodia and the branchiae 

 which are just outside the grooves; the median area is marked 



