44 Cobb — Nematodes, mostly Australian and Fijian. 



Hab: — The worms were very common in the soil about the roots of banana plants 

 in Fiji, July, 1891. The males were especially common. Only one female was seen, 

 so that I am not perfectly certain that the male and female here described together 

 really belong to one and the same species. 



22 



5. D. granuliferus, n.sp. Ii V I's '% t' i'^^"™- The six lips are very distmct 

 and each bears the usual two papiUse. The anterior part of the oesophagus is one- 

 fourth as wide as the corresponding part of the neck and is surrounded in front of 

 the nerve-ring by three elongated granular bodies which become conspicuous when 

 the worm is immersed in weak osmic acid; behind the nerve-ring the oesophagus 

 gradually expands until it becomes, in the posterior half, two-thirds as wide as the neck. 

 The tessellated intestine is about two-thirds as wide as the body and is composed 

 of cells of such a size that about twelve side by side make up the circumference. 

 The narrow rectum is somewhat less than twice as long as the anal body-diameter, 

 being about equal in length to the tail. The pre-rectal portion of the intestine is 

 one and one-half times longer than the rectum. The lateral fields are one-third as 

 wide as the body. The tail is pointed and decreases more rapidly in the anterior half 

 than in the posterior half. The reflexed portions of the ovaries reach half-way back 

 to the vulva. The eggs are a trifle longer than the body is wide and a little more 

 than one-third as wide as long. Figured on PI. v. 



I/ad. — Not uncommon about the roots of banana plants in Fiji, July, 1891. No 

 males were found. 



6. D. spiralis, n.sp. ■" 2-* ^2-2 '%-7 "i-s ^■2'™- The neck is cylindroid to near the 

 nerve-ring ; thence it is convex-conoid to the expanded lip-region. There are six 

 distinct hps, and six papillae, also distinct. The rather slender spear slides in a 

 pharyngeal ring and can be clearly traced back a distance three times as great as the 

 width of the head. The anterior third of the oesophagus is narrow ; — it widens rather 

 suddenly, so that the posterior two-thirds are three-fifths as wide as the corresponding 

 part of the neck. The thin- walled tessellated intestine is three-fourths as wide as 

 the body and is composed of cells of such a size that about sixteen are required to 

 build up a circumference. The rectum is as long as the anal body-diameter ; the 

 pre-rectum is five times as long as the rectum. The lateral fields are at the neck 

 one-eighth, and at the tail one-fourth, as wide as the body. The conoid-hemispherical 

 tail seems to have a terminal pore and to contain a considerable number of small 

 glands. The depressed vulva leads into a vagina one-half as long as the body is 

 wide. The thick-shelled eggs are more or less ellipsoidal ; they are three-fifths as 

 wide as the body and twice as long as wide. The uteri seem to contain but one egg 

 at a time, and this is probably deposited before segmentation begins. The ovaries 

 reach two-thirds to three-fourths the distance back to the vulva. Male unknown. 



