346 
Filariid Parasites of Ruminants 
Setaria Marshalli sp. n. 
Among the specimens of S. digitata collected by Dr Marshall from Cattle 
afc Wassein, Burma, was a single female Setaria which differs markedly from 
all known forms of the genus and which I take as the type of a new species, 
named after the collector. The specimen was unfortunately not in a good state 
of preservation and the description is therefore incomplete in a few particulars. 
Specific diagnosis. Setaria: Head not separated from the rest of the 
body and appearing truncated anteriorly. 
The peribuccal ring is elongated in the dorso-ventral direction and is very 
deeply notched laterally. The lip-like lateral projections described in S. digitata 
Fig. 4. Setaria Marshalli sp. n. A. Head in lateral view. B. Lateral view of caudal 
. extremity of female, x 220. 
and S. labiato-papillosa are in this species exceptionally prominent and 
markedly tooth-like, being themselves indented at their apices (Text-fig. 4 A); 
they bear a strong resemblance to the dorsal and ventral teeth which are 
strong and provided with two cusps. 
Head papillae were not observed. 
Female: 90 mm. in length, with a maximum breadth of about 0*6 mm. 
The oesophagus has a total length of 9 mm. 
Anus 0-45 mm. from the posterior extremity, the latter is rounded and 
slightly curved in the dorsal direction (Text-fig. 4 B). The lateral appendices 
are bifurcated and situated very close to the posterior extremity of the body. 
Vulva about 0-6 mm. from the anterior extremity. 
