Eel-worm in Paper-hangers* Paste. 



303 



immersion. The l)iiccal ravity narrows quite sharply <in<l 

 leads into the straiglit narrow tube which tr.ivoises fh« hiiij^th 

 of the muscular cesophaorus^ n.\v\, after passing througli the 

 l)ulh, opens into the intestine. 



The ce-5ophagus is divided into three parts — the lon;^, some- 

 what fusiform first portion, followed by a shorter neck or 

 constricted portion, which is succeeded by the bulb. 



In the muscular walls of the first two parts there are thin 

 ciiticular sheets or lines, which are split anteriorly and seem 

 to serve as supports or attachments for the musculature. 



Tlie valvular apparatus of the bull) is well developed, an<l 

 consists of three processes which are corrugated on their 

 anterior surfaces and are supported bv the muscles of the 

 bulb. 



The excretory pore opens ventrally in the region of the 

 constricted part of the oesophagus. 



Fiar. 2. 



Auyuillula redicica. Portion of female. 

 /. = intostine ; Oy. = ovarium ; 6''. = utei'us r. = vulva. 



ii nerve-ring is present and lies across the cesophagus, 

 generally quite close to the bulb, but sometimes it is to be 

 found much ttirther forward. 



The cuticle is very finely striated, the striae being visible 

 under an oil-iminer.sion lou'^, and lateral lines are present. 

 'I'he body-cavity and intestinal walls are generally densely 

 filled with large and small globules of some kind of fat-like 

 substance, probably a reserve food-material. 



Ftni'tle Reproduclice System, — This, in mature specimens, 

 is practically a tubular uterus in which the eggs develop 

 into embryos, the species being vivi[)arous. The ovary id 



