I is more slender, four times as loi the short one; the axial canal ol 



«r. 



nus Sangiria ' 1 1- 



Bod) obl( eneral appearance with ili.it of Chloeia and Notopyg^ 



iruncle i> without crest and folds, wedge-shaped, with indistinct transverse grooves. 

 absent. Branchiae small, only consisting of a few filaments; first pair of them on the 

 fifth segment. Branchial cirri present. Ventral bristles denticulated. Anal cirri paired. 



i. ! ia hystrix Horst. PI. IX. figs. 8 — [2. 



Ho cit. Vol. XXXIII, p. . 



i Lat. \.. 125 i8'.7 Long. E. Celebes-Sea. Depth 2053 ML 6 specimens. 



The length of this worm is about 9 mm.: the number of its segments amounts to 19. 

 The body is oblong oval, rather obtuse anteriorly, tapering posteriorly, with long, opalescent 

 bristles, projecting as much on each side as two thirds of the breadth of the body, especially 

 in the posterior segments and giving to the animal a spiny appearance. X<> eyes are visible. 

 The anterior part of the ! PI. IX, fig. 8 shows a dark pigment on its dorsal sid< 



on a smal! oval spot in the middle and a crescentic one on each side, that remain uncoloured. 



riorly the cephalic lobe is provided with a narrow, wedge-shaped caruncle, showing five 

 indistinct. transverse grooves; the caruncle lias a rather Ioose structure and extends till upon the 

 erior part of the a ;h segment. In front ol the caruncle a short, median antenna is ins(*rted ; 

 the first pair of tentacles spring from the middle of the dorsum of the cephalic lobe next to 1 

 other, whereas the other pair is situated laterally. The mouth seems to be limited posteriorly 

 by the third segment, that is longitudinally folded in its middle. The surface of the palps, that 

 have an elliptical shape, is covered with small black dots, like in Bathychloeia. The branchiae 

 commence on the fifth segment; they are very small, composed only of a few undulated filaments. 

 There occur branchial cirri like in Notopygos\ the) are much longer than the filaments of the 

 gills and extend to the middle of the dorsum. The dorsal cirri, furnished with an enlai 



I part, do not reach the distal extremity of the bristle-fascicles ; the ventral cirri are rather 



short in comparison with the ventral bristles. The ventral bristles (l'l. IX. fig. 9) much resemble 



those of Notopygos megalops |; their long limb, about thrice as long as the short one, is some- 



what curved ontward beyond the fork and furnished with 2 to 4 conspicuous denticulations. 



tae l'l. IX, fig. io) have about the same shape. hut are more slender; their 



about tour times longer than the short one, is smooth or only provided with 



iple of faint denticles. In the bristles of the first segmenl (PI. IX, fig. 11) the longer 



limb is much more curved ontward, five times longer than the short one and furnished with a 



number oi denticli I he anal orifice is probably terminal. There are two anal cirri, 



1 N mi 1 aftcr th. Inch the si 



4. 



3° 



