266 BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



This key does not include Streptocara, species Baylis, 19196, a 

 single female specimen of which was found in Ui^ia grylle in Yukan- 

 ski (Arctic Eussia). Baylis states that this is probably /Strepto- 

 cara pectinifera. 



STREPTOCARA PECTINIFERA (Neumann, 1900) Skrjabin, 1916b 



Synonym. — Spiroptera pectinifera Neumann, 1900. 



Hosts. — Primary : Gallus gallus and Numidameleagris ; secondary : 

 Unknown, probably arthropod or other small invertebrates. 



Location. — In the mucosa of the gizzard. 



Morphology. — Streptocara (p. 264) : Whitish worms, attenuated 

 anteriorly. Cuticle transversely striated. Mouth (fig. 328 a) with 2 

 conical or triangular lips, the lip extremities slightly curved outward 

 and terminating in a dentiform process ; they are limited posteriorly 

 by a denticulated collarette and each bears 2 papillae. About 55/* 

 posterior to head end, or 42 and 36/* according to Gedoelst and Liege- 

 ois, are 2 cervical papillae (fig. 328fr) with a semicircular anterior 

 border and a corresponding posterior border bearing 6 or 7 teeth, ac- 

 cording to most authors, or 5 to 6, according to Gedoelst and Liegeois. 



Male 4 to 5.2 mm. long by 150 to 176/* wide. Esophagus 2 mm. 

 long. The tail (fig. 328c) has 4 pairs of preanal, the second and 

 fourth being the longest, and 5 pairs of postanal papillae regularly 

 diminishing in size from first to fifth. Two very unequal spicules, 

 the left 265 to 300/* long, ending in recurved barb, the right 75 to 88//. 

 long, thick and barbed. Caudal alae, 200/* long, unite anteriorly. 



Female 6.5 to 9.6 mm. long by 275 to 280/* wide. Esophagus 2.4 

 mm. long. Vulva slightly posterior to equator of body, about 5.47 

 mm. from head end. Eggs 33/* long by 20/* wide, according to most 

 authors, or 37 to 39/* long by 20 to 21/* wide, according to Gedoelst 

 and Liegeois, containing embryos when deposited. 



Life history. — Unknown; probably has intermediate stages in 

 arthropods or other small invertebrates, which probably eat the eggs 

 passed in the droppings and in which infective larvae develop, and 

 such intermediate hosts being eaten by birds, the larval worms 

 mature. 



Distribution. — Europe (France, Belgium, and perhaps Italy and 

 Arctic Russia). 



STREPTOCARA CIRROHAMATA (Linstow, 1888) Skrjabin, 1916b 



Synonyms. — Filaria (Spiroptera) cirrohmnata Linstow, 1888; 

 Spiroptera cirrohamata Stossich, 1897. 



Hosts. — Primary: Phalacrocorax verrucosus; secondary: Un- 

 known, see S. pectinifera, p. 266. 



Location. — " Stomach." 



