196 FILARIOIDEA 



Leidy, 1856, Proc. Acad... Nat. Sci. Philadelphia, viii, 55; 

 Welch, 1873, Month. Micr. Journ., London, x, 157; Fiille- 

 born, 1912, Centralbl. f. Bali., (I) Ixv, 341; Railliet & Henry, 

 1911, Bull. Soc. Path, exot., Paris, iv, 386. 



3. Aeanthocheilonema Cobbold, 1870. 



Cuticle with fine transverse striations, or none, or striated 

 only longitudinally. Head blunt, with a pair of lateral 

 papillae, and four submedian papillae which may have double 

 terminations. Oesophagus consists of a relatively short, 

 muscular, anterior portion and a long and stouter, glandular, 

 posterior portion. Tail of male spirally twisted, usually 

 without alae. Three or four pairs of preanal and at least 

 three pairs of postanal papillae present. Frequently also, 

 near the tip of the tail, a pair of small conical lateral 

 appendages. Spicules very unequal and dissimilar ; the left 

 long, with a stout, tubular proximal portion and a narrow, 

 filamentous, sometimes alate, distal portion, the right short, 

 usually much stouter and variable in shape. Tail of female 

 moderately long, digitiform, usually with a pair of conical 

 appendages near its tip. Vulva circular, near the anterior 

 end of the body. Common trunk of uterus long. Uterine 

 branches parallel. Eggs small, thin-shelled. Viviparous. 

 Embryos without "sheath." 



Hab. Serous membranes or vascular system of Mammals. 

 Genotype : A. dracunculoides Cobbold, 1870. 



Cobbold, 1870, Proc. Zool. Sac, London, 9; RaiUiet, Henry 

 & Langeron, 1912, Bull. Soc. Path, exot., Paris, v, 395; 

 Boulenger, 1920, Proc. Zool. Soc, London, 494; Baylis & 

 Daubney, 1923, Pec. Ind. Mus., xxv, 564. 



4. Dipetalonema Diesing, 1861. 



Apparently a synonym of Filaria {sens. lat.). No adequate 

 generic definition exists. Diesing's genotype, D. cavdispina, 

 appears to be generally recognized as a synonym of Filaria 

 gracilis Rudolphi, now referred to Acantliocheilonema Cobbold. 

 If it were proved definitely that F. gracilis and D. caiidispina 

 are identical, then the name Dipetcdonema would supersede 

 Acanthocheiloneyna. 



Diesing, 1861, Sitz. k. Akad. Wiss., Wien, xlii, 620, 703. 



5. Wuehereria Silva Araujo, 1877, of Seurat, 1921. 



Body tapering anteriorly. Cuticle smooth. Head distinct, 

 rounded, followed by a narrower neck. Mouth circular, 

 without lips. Two crowns of cephalic papillae present. 

 Oesophagus rather indistinctly divided into two portions. 

 Caudal end of male digitiform, rather sharply curved ventrally, 

 provided with alae. A number of preanal and postanal papillae 



