C. L. Boulenger 349 
tapers sharply to the oral extremity. The comparatively small head is separated 
from the rest of the body by a slight neck-like constriction (Text-fig. 5). 
Peribuccal ring in the shape of a short oval, its dorso-ventral axis being 
only slightly longer than the lateral; dorso-ventral and lateral notches of 
approximately equal depth so that the buccal armature gives the impression 
of a shallow ring with four truncated tooth-like processes projecting anteriorly 
in the submedian planes (Text-fig. 6). 
Submedian and lateral head-papillae small. 
Anterior and posterior regions of the oesophagus measure 063-07 mm. 
and 9-5-103 mm. respectively. 
Male: 108-110mm. in length with a maximum breadth of about 0*5mm. 
Tail region narrow, coiled in a close spiral and terminating in a rounded 
knob. Lateral caudal appendices were not observed and are probably absent 
in this species (Text-fig. 7). 
Cloaca about 0-28 mm. from the posterior extremity. Four pairs of pre- 
anal and three pairs of postanal papillae. 
Spicules very unequal, the longer having a length 0-45-0-47 mm. and con¬ 
sisting of an anterior cylindrical region, 0-25-0-27mm. long and a posterior 
partly membranous region the terminal portion of which is finely serrated 
(Text-fig. 7). 
Female: 200-260mm. in length, the body having a maximum thickness 
of 1-25-1-5 mm. 
Anus 0-8 mm. from the posterior extremity which is provided with a sucker¬ 
like terminal appendage (Text-fig. 6). A pair of small lateral appendices are 
situated 0-05-0-08 mm. from the extremity. 
Vulva 0-7 mm. from the anterior end of the body. 
REFERENCES. 
Linstow, 0. von (1906). Helminths from the Collection of the Colombo Museum. Spolid 
Zeylan., m. 163-188. 
Railliet, A. et Henry, A. (1911). Sur une Filaire peritoneale dcs Porcins. Bull. Soc. 
Path. exot. Paris, iv. 386-389. 
-- (1911). Remarques au sujet des deux Notes de MM. Bauche et Bernard. Bull. Soc. 
Path. exot. Paris , iv. 485-488. 
Stiles, C. W. (1907). The zoological characters of the Roundworm genus Filaria Mueller 
1787, with a list of the Thread Worms reported for Man. Bull. 34, Hyg. Lab., U.S. 
Pub. Health and Mar. Hosp. Serv., Washington, 31-51. 
Stossich, M. (1897). Filarie e Spiroptere. Lavoro Monografico. Boll. Soc. adriat. di Sci. 
nat. in Trieste , xvm. 13-162. 
EXPLANATION OF LETTERING TO TEXT-FIGURES. 
a. —anus of female; c.a —caudal appendices; cl. —cloaca of male; l. —lateral lip of peribuccal 
ring; n.r. —nerve ring; oes.l. —anterior region of oesophagus; oes. 2.—posterior region of oeso¬ 
phagus; p.r. —peribuccal ring; po.p. —postanal papilla of male; pr.p .—preanal papilla; s.j). —sub¬ 
median head-papilla; s.sp .—serrated end of spicule; sp. —ring of caudal spines; spic. 1.—long 
spicule of male; spic.2 .—short spicule; t. —dorsal tooth of peribuccal ring; tc. —terminal knob of 
caudal region; v. —vulva. 
23—2 
