BY N. A. COBB. 389 



as wide as the neck, through the excretory pore situated close 

 behind the slightly oblique ner\ e-ring. The tail is conoid from 

 the inconspicuous anus, but tapers more rapidly in the middle 

 three-fifths than elsewhere. The terminus, where the caudal 

 glands empty, is very slightly swollen and bears three short hairs. 

 The vuha is neither raised nor depressed; the vagina is one-third 

 as long as the body is wide. The eggs are a little longer than 

 the body is wide and four-fifths as wide as long. 



Male not seen. 



This worm was found in sand near low-tide mark, Port Jackson, 

 New South Wales, Australia. 



CoMESOMA JUBATA, n.sp. The thin, transparent cuticle of this 

 striking species is very finely transversely striated and bears hairs 

 throughout, though those on the body are very much smaller than 

 those found on the neck. Most conspicuous among these latter 

 are four submedian rows, of about twent3'-five hairs each, situated 

 opposite each other on the anterior half of the neck. These hairs, 

 which are nearlj- as large as the cephalic setae, do not grow per- 

 pendicularly^ upon the cuticle but at an angle, and each row is 

 divided into two sets, those of one set sloping in one direction 

 from the submedian line, while the alternate hairs belonging to 

 the other set slope in the opposite direction. The conoid neck 

 terminates anteriorly in a small truncate head, which bears near 

 its anterior margin four submedian cephalic setse, each somewhat 

 longer than the head is wide. The inconspicuous lips ai-e armed 

 with two rows of small papillte, each row consisting of six 

 members; the outer row is half way between the cephalic setse 

 and the anterior border of the head, while the second is placed 

 close round the mouth. Three-wind spiral lateral organs one-half 

 as wide as the head occur close behind the lip-region, their 

 anterior margins, in fact, being a little in front of the circlet of 

 cephalic setaj; as usual, the right one is a left-handed spiral and 

 the left a right-handed spiral. The worm is destitute of eyes. 

 The sn;iall and simple conoid pharynx is in its widest part only 

 one- third as wide as the head. The conoid oesophagus, at first 

 only one-half as wide as the neck, becomes, in the posterior fifth, 



