MONOaKAPU OF THE AMPUINOMACEA. 



233 



H, little below the apex, and are simple, not serrated. The bris- 

 tles of the dorsal or upper row of feet (fig. 7 a, b, c) are 

 fewer in number than those of the ventral row ; they are cu- 

 riously swollen out a little below the apical part, which termir 

 nates in a sharp point with a small tooth on its outer edge a 

 very short distance beneath the point, and, with the exception of 

 those of the second or third feet (fig. 7 h), they have a row of ser- 

 rations or teeth on the inner margins, the teeth being about 16 

 in number, slightly curved downwards or harpoon-shaped, 



"Wo possess only one specimen of this species, which formed 

 part of the collection of the late Dr. Leach, and, on the au- 

 thority of Mr. Leadbeater, who supplied him with the specimens, 

 is said to come from India. 



Sp. 12. CiiLOEiA PARTA, sp. uov. (Plate IV. figs. 8 a, b.) 



Corpus breve, angustum, utrinque attenuatum, e segmentis vi- 

 ginta et sex constans, atratum, segmentis omnibus medio dorsi 

 linea nigra longitudinali et maculis atris transversis, signatis, 

 BranchijB parvae, nigrae. Caruncula elongata, plicata, crista me- 

 dia linea nigra notata. Cirri dorsales nigri. Cirri ventrale^ 

 pallidi. Setae pedum dorsalium capillares, acute punctatae, mar- 

 gine interno serratae, serrae deorsum spectantes. Setae pedum 

 ventralium capillares, bifidae, ramus internus brevissimus, dentem 

 simulans. 



Long, unciam unam ajquaus. . ; 



JTah. - — ? {Mus. Brit.). 



This worm is small, only about 1 inch in length, and narrow, 

 attenuated at each extremity, especially posteriorly, the pos- 

 terior extremity being much narrower than the anterior, and 

 produced into a sharpish point. The body is composed of about 

 26 segments, is of a dark colour, and peculiarly marked on the 

 back with black spots. Along the centre of the back, on each 

 segment, there is a dark mark in the shape somewhat of the Eo- 

 man J, or rather the Greek Y (upsilon). On each side there is 

 also a dark mark wnich runs across each of the segments, and 

 another encircling the ventral setiferous tubercle or foot. The 

 branchi^ are small, simply branched, and are of a dark colour. 

 The caruncle is elongate and much wrinkled or pleated, and its 

 crest is surmounted witH a black, waved line. The setro of the 

 dorsal tuft (fig. 8 a) are capillary, sharp-pointed, and serrated or 

 toothed a little below the apex with harpoon-shaped teetli. The 

 sctfE of the ventral tuft (fig. 8 b) are very slender, oapillai-y, and 



