I9I3. 
Hkwitt. — Nematoda from Co. Dublin. 
149 
Cephalohiis longicandatus Biitschli. — This worm is longer 
than C. striatus, and the tail is long and pointed ; the tail 
of the male is more suddenly constricted than that of the 
female (see figs. 4 and 5). Both species have a large 
oesophageal swelling in which there is a star-shaped kind 
of chitinous " mill." Quite a number of both species were 
found. 
Fig. 3, Cephalobus longicaiidatus. head ; tig. 4, tail of female ; fig, 5, 
tail of male (after De Man). Magnified. 
Monohystera bulbifera De Man. — This is a very small 
eelworm only about -33 mm. long, but very agile. It is 
distinguished by the large oesophageal swelling, and the 
structure of the head and tail (see figs. 6, 7, and 8). As is 
shown in the figure, the tail is suddenly constricted to a 
very small blunt point. 
