242 
PACIFIC SCIENCE, Vol. II, October, 1948 
(?) indistinct, in the form of two barely dis¬ 
cernible structures, equal, pointed at both ends, 
0.15 mm. long.” Crusz (1946) on the other 
hand states, "A very distinct pair of spicules 
present in one worm; slender, well ‘chitinized/ 
unequal, pointed anteriorly, and blunt or prob¬ 
ably broken off posteriorly. Right spicule 0.231 
mm. long, left spicule 0.190 mm. long. No 
trace of any spicules in the other two worms.” 
In the same personal communication referred 
to above, Baylis has "carefully examined, with 
Mr. Crusz, the specimens from which he made 
his drawing showing ‘spicules/ The structures 
he shows as such are certainly there, and in the 
position in which they are shown. They appear 
to be unquestionably internal, and not (as I 
had half expected) lying on the surface of the 
preparation . . . My own suggestion is that they 
do not belong to this specimen at all, but to 
some other nematode (possibly Castronodus 
strassenii Singh, 1934 which occurs in nodules 
of the stomach of the same host), which had 
somehow inserted them and had them broken 
off.” 
There is no evidence of the presence of 
spicules in any of the males in the present col¬ 
lection. 
REFERENCES 
Baylis, H. A. 1934. On a collection of cestodes 
and nematodes from small mammals in Tan¬ 
ganyika Territory. Ann. and Mag. Nat. Hist. 
X, 13: 338-353. 
-- 1944. Notes on some parasitic nema¬ 
todes. Ann. and Mag. Nat. Hist. XI, 11: 
793-804. 
Chen, H. T. 1937. Some parasitic nematodes 
from mammals of South China. Parasitology 
29(4): 419-434. 
Crusz, Hilary. 1946. Contributions to the 
helminthology of Ceylon. II. Notes on some 
parasitic nematodes, with a description of 
Anisakis tursiopis sp. nov. Ceylon Jour. Sci. 
(B) 23 (2): 57-66. 
Morgan, B. B. MS. The Physalopterinae 
(Nematoda) of North American Vertebrates. 
[Manuscript Thesis, University of Wisconsin 
Library, Madison, Wisconsin.} 
