cobb: draconema 



147 



Xiao 



cephalic setae 

 amphid 

 cervical striae 



d, posterior ditto 



e, nerve-ring 

 /, oesophagus 

 <7, cardia 



\, renette^ (?) 

 i, intestine wall 

 J, cuticle 

 k, stump of seta 

 I, intestine lumen 

 m, end of testicle 

 n, spermatocyte 

 o, spermatozoon 

 p, somatic seta 

 q, vas deferens 

 r, body cavity 

 s, tubiform append' 

 age 



s', tubiform append- 

 age shown larger 

 I, ejaculatory duct 

 u, ventral organ 

 V, a male seta 

 w, 3 caudal glands 

 .r, anus 



y, right spiculum 

 z, accessory piece 



Fig. 1. Draconema 

 cephalata 



placed close together 

 one in front of the 

 other; there is a similar 

 pair on either side of the 

 dorsal line, and another 

 pair on the dorsal J side 

 of the right amphid; 

 there are also similar 

 pairs between these sub- 

 lateral and subdorsal 

 pairs; — six pairs in all. 

 These twelve setae on 

 the dorsal face are the largest on the head, 

 but others occur to the number of a 

 dozen or more, both on the dorsal and 

 ventral faces. 



On the neck and thruout the body there 

 are numerous, very slender, spreading se- 

 tae, having a length about equal to half 

 the width of the neck, so that on the 

 slender portion of the body immediately 

 behind the oesophagus their length is 

 greater than that of the corresponding 

 body diameter. The nature and distri- 

 bution of these hairs indicate unusual sen- 

 sitiveness to external influences. 



1 Proposed new term for organ previously known as the "ventral gland." 



