A414 Mr. BR. J. Ortlepp on a new 
from their size, colour, and general contour of the body, I 
take to be the same as that described by Parona and Stossich 
in 1901 as Gsophagostomum tuberculatum, sp. n., from Dasy- 
pus villosus, 8S. America. The description and figures of 
these workers are, however, very incomplete, and it seems 
desirable to attempt a redescription, This is all the more 
necessary, because Parona and Stossich unfortunately referred 
this parasite to a wrong genus. 
The parasites were found irregularly distributed throughout 
the small intestine, and were easily seen because of their 
brilliant red colour. They were collected into normal saline, 
examined alive, and then killed by the hot 70 °/, alcohol 
method, Afterwards they were transferred to elycerinated 
70 °/, aleohol. By allowing the alcohol to evaporate, the 
parasite eventually came to lie in pure glycerine. This 
procedure rendered the specimens sufficiently transparent for 
examination ; but, in order to make out the details of the 
spicules, the males were cleared in Langeron’s lacto-phenol. 
Description. 
Male.—The males have an average length of about 6:5 mm. 
and breadth °33 mm. The body is red and forms a spiral 
of three or four turns, of which only the last one or two coils 
straighten out when the animals are killed in hot alcohol. 
The transverse cuticular striations (fig. 1, a) are well 
marked on the ventral surface, where they form a broad and 
conspicuous band commencing about 100 w from the anterior 
end and extending almost halfway down the length of the 
worm ; on the rest of the cuticle these striations are only 
faintly indicated, and in some places are difficult to see. 
Longitudinal striations are present, but are very faint. 
The cuticle around the anterior end forms a_ vesicular 
swelling (fig. 1, a and d). This surrounds the head and is 
about 75 » long by 55 w broad. It is terminated behind 
by a deep constriction which completely encircles the body. 
Externally it shows about twenty very faint transverse 
striations. The rest of the cuticle is remarkable in that it is 
enormously inflated, this inflation being more pronounced 
on the dorsal surface, where it may reach a thickness of over 
100 w at about the middle of the body. 
Lateral alee are absent. 
Cervical papillae were not observed, although carefully 
looked for. 
The anterior end of the worm bears four minute papille— 
two subdorsal and two subventral. These in cleared speci- 
mens stand out as clear and refringent dots. 
