STKONGYLOIDES IXTESTINALIS 



277 



as Tylenchus putrefaciens. These creatures attained the stomach with the 

 onions, causing nausea and vomiting. 



(b) Fam. Angiostomida. 



Gen. 3. Strongyloides, Grassi, 1879. 

 Syn., Pseudorhabditis, Perroncito, 1881 ; Rhabdonema, Leuckart, 1882, p.p. 



The parasitical form 

 possesses a simple mouth 

 without teeth and with- 

 out a spine ; the cylin- 

 drical oesophagus is very 

 long and almost reaches 

 to the middle of the body. 

 The free-living form pos- 

 sesses a small oral cavity ; 

 the oesophagus is short, 

 exhibits a double dilata- 

 tion, in the hinder part of 

 which there are small 

 teeth ; two spicules of equal 

 size. 



Strongyloides intesti- 

 nalis, Bavay, 1877. 



Syn. : Anguillula intesti- 

 nalis et stercoralis, Bavay, 

 1877 ; Leptodera intestinalis 

 et stercoralis, Cobb ; Pseu- 

 dorhabditis stercoralis, Per- 

 roncito, 1 88 1 ; Rhabdonema 

 Strongyloides, Leuckart, 

 1883 ; Strongyloides intes- 

 tinalis, Grassi, 1883 ; Rhab- 

 ponema -intestinale, Blan- 

 chard, 1886. 



In 1876, a number of 

 French soldiers returned 

 to Toulon from Cochin 

 China suffering from severe 

 diarrhoea. Dr. Normand, 

 the doctor under whose 



treatment they were, discovered a large number of small Nematodes 

 in the evacuated fseces, and Bavay described them as Anguillula stercoralis. 

 Soon after Normand, at the post mortem of a man who had died of 

 Cochin China diarrhoea, found numerous other Nematodes in the intestine, 



FIG. 191. Strongyloides intestinalis. At the left 

 side is a mature female from the intestine of a 

 man ; natural size, 2-5 mm. Next to it there is a 

 rhabditis-form larva from freshly evacuated faeces 

 (i 20/1), and a filariform larva from a culture (120/1). 



