. Bulletin - United States National Museum. Science. NEMATODE PARASITES OF BIRDS 265 Male with 2 membranous caudal alae; 4 pairs of preanal, 5 to G pairs of postanal papillae, all pedunculate. Two very unequal spicules, the longer ending in a recurved barb. Female with vulva usually a little behind the middle of body, occasionally more anterior or more posterior. Eggs embryonated when deposited. Parasitic under the cuticle of gizzard of birds. Type-species.—Streptocara pectinifera (Neumann, 1900) Skrjabin, Fig. 327.—Seuratia shipleyi. a and h, Proximal region of ovejector; c, distal RE
. Bulletin - United States National Museum. Science. NEMATODE PARASITES OF BIRDS 265 Male with 2 membranous caudal alae; 4 pairs of preanal, 5 to G pairs of postanal papillae, all pedunculate. Two very unequal spicules, the longer ending in a recurved barb. Female with vulva usually a little behind the middle of body, occasionally more anterior or more posterior. Eggs embryonated when deposited. Parasitic under the cuticle of gizzard of birds. Type-species.—Streptocara pectinifera (Neumann, 1900) Skrjabin, Fig. 327.—Seuratia shipleyi. a and h, Proximal region of ovejector; c, distal REGION OF OVEJECTOR. AFTER SEURAT, 1916 KEY TO SFECIES OF STREPTOCARA 1. Cervical papillae with 3 points 2. Cervical papillae with 5 or more points 6. 2. Female not over 10 mm. long 3. Female 16 mm. or longer 5. 3. Cervical papillae over 4(XV from anterior extremity; eggs 27> long. Streptocara triaenucha, p. 271. Cervical papillae not more than 140> from anterior extremity; eggs 39/* long 4. 4. Vulva anterior to middle of body (1 of body length) ; 5 pairs of postanal papillae; spicules 140/u. and 600> long Streptocara cirrohamata, p. -V>C>. Vulva in posterior region of body (500ju from posterior end) ; 3 pairs of postanal papillae; spicules 68^ and 237/n long__ Streptocara decora, p. 269. 5. Male mm. long; 6 pairs of postanal papillae; spicules 110> and 400/i long; from Colymbus arcticus and La run ridibundus. Streptocara tridentata, p. 271. Insufficiently described. From Fulmaris glacialis. Streptocara stellae-polaris, p. L'TO. 6. Male 11 mm. long; female said to be smaller than male; spicules 250^ and 490/* long Streptocara recta, p. lm;'.>. Male not over mm. long; female 6 to 15 mm. long; spicules not over 88m and 396/a long 7. 7. Five pairs of postanal papillae; long spicule measures 12«>-">m ; in (lalliist gallus. Streptocara pectinifera, p. 266. Six pairs of postanal papillae; long spicule measures 314 to 396,u; in other host
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