26 Cobb — Nematodes, mostly Australian and Fijian. 



as follows : lateral, two pairs opposite the spicula, one opposite the anterior part, the 

 other opposite the posterior part ; two pairs submedian close together opposite the 

 anus ; three pairs, two submedian and one lateral, just behind the middle of the wide 

 portion of the tail ; one pair lateral near the end of the wide part of the tail ; spicula 

 very slender, one and one-half times as long as the anal body-diameter ; accessory 

 pieces none (?). 



Hab. — Found in dung, Germany. 



15. D. inermis, Biitschli. 4-7 "e ^- ? "" '^°'"'- Female only known. Neck conoid; 

 head truncate ; cephalic setae six, very short ; lips six, large, broad and flat ; pharynx 

 one-half as wide as the head, cylindroid, one-half as deep as wide, with three teeth at 

 base not well developed ; the three bulbs of equal diameter and the median bulb 

 central ; intestine at once twice as wide as the bulbs, separated from the oesophagus 

 by a distinct constriction. 



Hab. — Found on roots of garlic which had been attacked by insect larvae, 

 Germany. 



16. D. similis, Biitschli. ;;,;'; 1-2 mm. Head rounded-truncate ; cephalip setae 

 six, broad and extremely short ; lips indistinct ; pharynx longitudinally striated, half 

 as wide as the head, half as deep as wide, with three teeth at the base, the dorsal one 

 somewhat larger; eggs -05 mm. long. A young male gave the following dimensions : 

 ? ? ? 3-3 ? ■*""• Tail contracting but little at first, but behind its middle point 

 becoming conoid suddenly, narrows to a breadth not greater than that of the spicula, 

 and continues thence narrow and conical to the hair-fine terminus ; pre-anal setiform 

 papillae as follows : one pair submedian just in front of the spicula ; one pair submedian 

 opposite the middle of the spicula. Post-anal papillae as follows : two pairs dorsal 

 submedian, one near middle of wide anterior part of the tail (these are perhaps the 

 pores), the other where the tail narrows suddenly ; three lateral pairs closely 

 approximated just in front of the pair last mentioned ; one ventrally submedian 

 setiform pair somewhat behind the anus ; one subventral pair close to anus, not 

 setiform ; spicula one-sixth as broad as long, rather blunt, nearly straight, equalling 

 the anal body-diameter in length ; accessory pieces two-thirds as long as the spicula. 



Hab. — Unknown to me. 



17. D. longicauda, Glaus. 3-^0 \ T ''"-s T ii'"-"- Cuticle transversely striated ; 

 head truncate ; cephahc setse six, very short ; lips six, distinct, rounded ; pharynx 

 cylindroid, half as long as the head is wide, and as deep as wide, its walls divided into 

 anterior and posterior parts composed of distinct pieces ; teeth three, at the base of 

 the pharynx, constantly clapping together; lateral fields broad; eggs ■054mm lonff 



2-(?) ; 15-4 M 83- AT 1 X -1 -i ■ ' &* 



3-8 (?) ? 1. 5-6 3-6 i'""°- Male tail convex-conoid to m front of the. middle, where it is 



