Z PROCEEDINGS OF THE NATIONAL MUSEUM vol.78 



nodules (also referred to as lips or papillae), which are directed 

 posteriorly and are either uncinate or obtuse at their free extremity. 

 According to Seurat, the head bears a pair of lateral papillae on each 

 side. Cephalic cuticle ornamented with a pair of epaulets or fes- 

 toons, which, according to Skrjabin, have zig-zag incisions in their 

 posterior portion. Buccal capsule lacking, according to Skrjabin, 

 or short and reduced, according to Seurat. Esophagus with three 

 chitinous axial lamellae. Male with uncinate tail, concave ventrally, 

 with a bursa which, according to Skrjabin, is delicate, or, according 

 to Seurat, has thick lateral lobes marked with a strong reticulate 

 striation and folded over each other ventrally. The ventro-ventral 

 and the latero-ventral rays are in relation with each other as opposed 

 to the other bursal rays; Seurat says they are parallel, but Skrjabin 

 says they are separated and figures them as slightly divergent. Ac- 

 cording to Seurat, the postero-lateral and medio-lateral rays are slen- 

 der, contiguous, and elongate, and the externo-lateral ray is short; 

 according to Skrjabin, the externo-lateral ray is related to the two 

 other lateral rays, which are so united as to leave only a slight cleft 

 between them; Skrjabin's figure indicates that the lateral rays have 

 a common stem which divides to form the externo-lateral ray and 

 the common stem of the two other laterals and that this latter com- 

 mon stem divides a half to two-thirds of its length from its base to 

 form these two rays. The externo-dorsal ray is short and massive, 

 originates directly at the tip of the tail, and does not reach the 

 bursal margin. The dorsal ray, in the type species, divides dichot- 

 omously distally to form four small tips and is the only ray in 

 relation with the small dorsal lobe of the bursa. There are two 

 voluminous sessile papillae, contiguous or almost so, on the posterior 

 lip of the cloaca. A pair of briefly pedunculated prebursal papillae 

 present. Spicules equal and short, each dividing distally, in the 

 type species, to form one dorsal and two latero-ventral branches. 

 No telamon (or gorge ret) present. Female with vulva posterior 

 to middle of body. Branches of ovejector divergent or parallel. 

 Uteri opposed. Kggs segmenting when deposited. Parasitic in 

 corneus tunic of gizzard in palmipeds. 



Type species. — EpomidiostOTrmTn uncinatvm, (Lundhal, 1848) 

 Seurat, 1918. 



EPOMmiOSTOMUM UNCINATUM (Lundahl, 1848) Seurat, 1918 

 Plate 1, figs. 4-6; Plate 2, figs. 11-12 



Synonyms. — Strongylus uncinatus Lundahl, 1848; E'poTnidiosto- 

 rrmm muttmum Skrjabin, 1916. 



Speci,-fic diagiiosis. — EpoTnidiostomuni: The body is slender, atten- 

 uated anteriorly, the striations being more developed in the neck 

 region. The postcervical papillae, about 450|u, posterior to the head 



