148 cobb: draconema 



There are no eyes. 



When the Ups are closed the pharynx appears as an elongated, 

 narrow, irregularly fusiform cavity, reaching well into the anterior 

 oesophageal bulb, and ending opposite the anterior cervical stria- 

 tions. The greatest width of the pharynx is about equal to the 

 distance between two successive striations of the adjacent cuticle. 

 Near its hind end it suddenly widens out a little and then con- 

 tracts again. There are no traces of pharyngeal teeth. The 

 oesophagus is somewhat dumbbell-shaped, and consists of two 

 bulbs connected by a short tube one-third as wide as the neck. 

 The structure of the oesophagus and head suggests that the mouth 

 can be opened widely. The intestine is built of cells of such a size 

 that few are required to complete the circumference — probably 

 two to four. 



There are no male ventral supplementary organs of the usual 

 character. 



It remains to describe the peculiar series of arcuate tubular 

 organs, found on both sexes on the posterior portion of the body 

 in front of the anus. There are four series of these organs; two 

 lateral and two ventrally submedian. The lateral sets comprise 

 nine pairs. Each organ consists of a colorless, transparent, non- 

 staining, arcuate, hollow tube, curving slightly backwards, but 

 on the whole arranged nearlj^ at right angles to the ventral sur- 

 face. The outer extremity of each tubg is enlarged a little and is 

 distinguished from the remainder of the tube, not only by its 

 width, but by difference in structure, for it is somewhat bell- 

 shaped, and has an axial portion corresponding to the tongue of 

 the bell. The tubes have a diameter about equal to the width 

 of one of the adjacent annules, but are not perfectly uniform in 

 diameter thruout their length, in fact taper gently from base to 

 tip. That portion of the body occupied by the tubular organs 

 is supphed with peculiar internal ventral bodies, the number and 

 position of which correspond, approximately at least, with the 

 number and position of the tubes. It is not that there is one of 

 these bodies to each tube, but rather that all the tubes in the same 

 zone are associated with one of the internal bodies. These cel- 

 lular bodies are ventral in position and their number is about 

 nine. 



