STRONGYLUS APRI 



325 



The first communication as to the occurrence of strongylidae in ' 

 man was that of Diesing, who, in 1845, in Klausenburg, had the ( 

 opportunity of examining 

 strongylidae found in the 

 lung of a little boy six 

 years old (Strongylus longe- 

 vaginatus, Dies.) ; probably 

 also the nematodes found in 

 the trachea and larynx of 

 man, and described by 

 Rainey and Bristowe as 

 specimens of Filaria trache- 

 alis, belong to this group ; 

 according to Chatin strongy- 

 lus apri may also occur in 

 the intestine of man ; this 

 occurrence, however, may in 

 all probability have been due 

 to an accidental introduction 

 of adult Strongyli into the 

 intestine, and should not be 

 attributed to a settlement 

 from the larval stage. 



The embryonic develop- 

 ment and the larval stage 

 have been made known by 

 Wandolleck. No experi- 

 ments to induce infection 

 have been made ; it is pro- 

 bable, however, that infec- 

 tion is direct and without 

 the aid of an intermediary 

 host. 



LITERATURE. 



FIG. 212. Strongylus apri. A. Posterior 

 extremity of the female, magnified. B. Pos- 

 terior extremity of the male, magnified. C. 

 DIESING, C. M. Systema Helmin- male and female, natural size. (After Railliet.) 

 thum. Vindob., 1851, ii., p. 

 317. Revision der Nema- 



toden. (Stzber. d. K. Akad. Wiss Wien. math.-nat., 1860, -CL xlii., p. 722.) 

 RAINEY. Entozoon found in the Larynx. (Transact. Path. Soc., London, 1855, 



vi - P- 370 

 CHATIN, J. Le strongle paradoxal chez 1'homme. (Bull. Acad. med., Paris, 1888, 



No. 15, p. 483.) 

 JELKMANN, F. Ueb. d. fein. Bau v. Strong, pulm. apri Eb. In.-Diss., Basel. 



(Lpzg., 1895.) 



