120. 



Order DORYLAJ>'iIDA Pearse, 19U2 

 (Key to suborders niodified from Chit, i Chit., 1950) 



Stylet present; esophageal ?land orifices posterior to nerve rine;, 

 glands uninucleate, esophagus consisting of narrow cylindrical 

 anterior part and wider cylindrical posterior part or glands lying 

 free in body cavity or 1 or 2 reduplicate series; muscular caudal 

 sucker absent; excretory system absent or very poorly developed 



. DORYLAIMINA (Chit., 1933) Pearse, 1936 P. 120 



Stylet absent or stylet absent at least in adult stage; esophageal 

 gland orifices at anterior end of esophagiis, glands highly poly- 

 nucleate, lying inside the cylindrical esophagus; male with one 

 spicule and caudal sucker; caudal glands absent; ventral excretory 

 cell apparently absent; eggs operculate. (Parasites of vertebrates) 

 DIOCTOPHIMATINA Chit. & Chit. 1937 



Suborder DORYLAIMINA (Chit., 1933) Pearse, 1936 

 (Key to superfamilies from Chit., & Chit., 19^0) 



1. Amphids pocket-like; esophageal glands not free in body cavity; 

 intestine not extending anterior to base of esopiiagus; eggs not 



operculate DORYLAMOIDEA (de Man," I876) Thome, 193U P. 121 



Amphids modified, pocket-like to pore-like; esophageal glands free in 



body cavity, foming stichosome 2 



2. Intestine extending anterior to case of esophagus, usually without 

 Ivunen; male with 1 or 2 spicules and usually 2 testes; eggs modified 

 but not operculate. (Parasites of land and fresh water arthropods in 



larval stages.; Tt'^lli'ITHOIDFA VJulker, 192ii 



Intestine not extending anterior to base of fsophagus, with well- 

 developed limen; male with 1 or spicule and testis; eggs usually 

 operculate. (Parasites of vertebrates in adult stage; life history 

 direct or indirect.) TRICHIIROIDEA Raillet, I9I6 



