BY N. A. COBB. 407 



opposite the base of the same tooth are so far forward and so 

 small that they are easily confounded with the setose papilhe 

 distributed on the lips. These papillae are numerous, six larger 

 being found on the front of the lips, one on each lip, and about 

 eighteen others smaller, being found nearer the oral orifice. The 

 lateral organs seem to be represented by what appears in the 

 profile view to be a transverse lateral ridge opposite the sub- 

 cephalic sette. There are no eyes. The simple cyathiform 

 twelve-ribbed pharynx is 8fj. deep and contains, 3^ from its 

 anterior border, a minute dorsal tooth. The ribs of the 

 pharynx are jointed. Anteriorly the oesophagus is only one- 

 third as wide as the neck in its anterior half, but behind 

 the nerve-ring it gradually expands until it finally becomes 

 two-thirds as wide as the base of the neck. The cardiac con- 

 striction is distinct and rather broad. The thin-walled intestine, 

 at first narrow, becomes gradually three-fourths as wide as the 

 body. The rectum in the female is equal in length to the anal 

 body-diameter. The elongated ventral gland is situated behind 

 the cardiac region, and empties its excretion by means of a duct 

 and an ellipsoidal ampulla one-third as wide as the neck, through 

 a ventral pore situated just behind the nerve-ring. The tail is 

 conoid from the inconspicuous anus; the conoid terminus is one- 

 third as wide as the base of the tail. Caudal glands are present. 

 The elevated vulva leads to uteri, never containing more than 

 three or four eggs each; these are unsegmented and three-fourths 

 as wide as the body, and two- thirds as long as wide. The reflexed 

 parts of the ovaries reach three-fourths the way back to the vulva. 



i '■ 1-2-5 — M 88- , ^ i 1 Q 



r -i 2-1 2-2 3-3 2-2 ^ ^ *° ^ ^ '"™- The male tail is precisely like 

 that of the female, — perhaps a little more arcuate. The two 

 equal, linear, arcuate spicula appear to be of uniform size through- 

 out, and are twice as long as the anal body-diameter. The two 

 simple accessory pieces are one-half as long as the spicula and are 

 arranged parallel to them. I saw no accessory organs either pre- 

 or post-anal. 



This worm is very common on Australian coasts, among algae 

 and in sand. 



