DIVISION NON-BURSATA 



627 



NON-BURSATA. 



Family 2. Anguillulid^. 



Very small Nematoda, mostly free-living, rarely parasitic, with 

 an oral cavity armed with a tooth or spine, and an oesophagus with 

 a double dilatation. Male with two spicules, and sometimes a 

 bursa copulatrix. Female with a pointed tail, and a vulva situated 

 in the middle of the body. 



Genera. — -(i) Anguillula, (2) Anguillulina, (3) Rhahditis, (^) Lep- 

 t Oder a. 



Anguillula Elirenberg, 1826. 



Anguillulidae with small mouth, oesophagus with two dilatations, of which 

 the posterior has valves. Male without bursa, spicules with accessory pieces 

 feather-shaped. Female with the vulva in the hinder portion of the body; 

 uterus asymmetrical. 



Anguillula acetiMiiller, 1783. 



Anguillula aceii is the common vinegar eel, which has several times been 

 reported as occurring in the human bladder, but the method of infection is 

 unknown. 



Morphology. — Cuticle not striated, body cylindrical, tapering a little to 

 the anterior, but considerably to the posterior end. Male i to 2 millimetres 

 long and 24 to 40 broad, with two pre-anal and one post-anal papillae. Two 

 equal spicules 38 [jl long. Female, 2-4 millimetres long and 40 to 72 [a, broad. 

 Vulva near the equator. Embryos 222 by 12 /i. 



Pathogenicity. — Nil. 



Anguillulina Gervais and van Beneden, 1859. 

 Synonym. — Tylenchus Bastian, 1864. 



Anguillulidae possessing a spine on the oral cavity. Male bursa without ^ 

 papilla; uterus asymmetrical. 



Species. — Anguillulina putre fad ens Kuhn, 1879. 



Anguillulina putrefaciens Kiihn, 1879. 



Synonyms. — Tylenchus putrefaciens Kuhn, 1879; Trichina contorta Botkin, 

 1883. 



This small nematode lives in onions, and it or other varieties may at times 

 find access to the stomach with the food, and be rejected by vomiting, as 

 reported by Botkin in 1883. 



Rhabditis Dujardin, 1845. 



Small Anguillulidae with no teeth in the oral cavity, with accessory 

 pieces to the two male spicules, and without lateral ridges: 



Rhahditis niellyi Blanchard, 1885. 



Synonym. — Leptodera niellyi Blanchard, 1885. 

 This parasite was described by Nielly in 1882 in a boy who suffered 

 from an itching papular eruption in Brest, which he had never left. 



Morphology. — The parasites measured 0'33 by 0-03 millimetre in width, 

 and possessed a cuticle with delicate transverse striation, a double-bulbed 

 eesQphagus, and an intestine, but no genital organs. 



