314 BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



Female 14 mm. long. Width of body 340/* at level of esophagus 

 and intestine, 470/* in middle region of body, 200/* at level of anus. 

 Buccal cavity (fig. 375a) 33/* deep; esophagus cylindrical, 925/* long 

 by 70/* wide. Nerve ring 220/* from anterior end of body. Vulva 

 500/* from anterior end of body. Oviduct 90/* wide. Anus 85/* from 

 tail end (fig. 375c). Eggs 58/* by 30/*. 



Life history. — Unknown; probably involves intermediate stages in 

 other hosts. 



Distribution: — Europe (European Russia). 



As the present writer had great difficulty in translating the Russian 

 description of this species, the above must be accepted with reser- 

 vations. 



THELAZIA DACELONIS (Breinl, 1913) Travassos, 1918a 



Synonym. — Filaria dacelonis Breinl, 1913. 



Hosts. — Primary : Dacelo leachii; secondary : Unknown. 



Location. — Conjunctival sac. 



Fig. 375. — Thelazia cholodkuwskii. Female, a. Head end ; b, 



CUTICULAK ANNULATIONS ; C, TAIL. AFTER SKRJABIX, 1022 



Morphology. — Thelazia (p. 311) : Body tapering toward both ends ; 

 f.nterior end bluntly rounded, posterior end pointed. Cuticula with 

 distinct transverse striations. Mouth (fig. 376a) oval, surrounded 

 by a chitinous (or cutinous) ring with clefts which give the appear- 

 ance of 6 lips. No papillae discernible, according to Breinl's descrip- 

 tion; his figure, however, shows what are apparently 2 cephalic 

 papillae. Buccal cavity 24 to 28/u. long, cup-shaped. Esophagus 750 

 to 825/* long, club-shaped. 



Male 10 to 11 mm. long by 390 to 400/* wide. Tail (fig. 376c) 

 curved ventrally, its end bluntly rounded. Cloacal aperture 180/* 

 from posterior end. Caudal papillae variable, in one specimen 5 

 pairs of preanal and 2 pairs of postanal papillae; in another speci- 

 men 4 pairs of large preanal and 1 pair of postanal papillae. 

 Spicules dissimilar and unequal; one 2.1 mm. long by 21/* wide at 

 proximal end and 10/* wide at distal end, the other 180/* long by 30/* 

 wide with its proximal end funnel-shaped and distal end rounded. 



Female 11 to 14 mm. long by 500/* wide. Vulva (fig. 376a) 525 

 to 555/* from anterior end of body. Vagina 1 mm. long. Anus 255/* 

 from tail end (fig. 3676), and provided with a strong muscle. 



