216 
A Parasitic Copepod 
The ovisacs are 4-4 mm. long, longer than the trunk, of a dark brown colour, 
and show externally six rows of ova, 31 in a row. 
The total length of the preserved animal is about 10 mm. A fully developed 
female is found embedded in a relatively small tumour, has a larger trunk, 
bears two ovisacs, and has no trace of conjunctive tubes. 
The appendages, all paired, none of them setigerous, are, in order, as 
follows (Fig. 3): The antennules are minute, two-jointed, the joints not making 
antennule:. 
Fig. 3. Medesicaste. The appendages. 
any angle with one another. The terminal joint is rounded. They are situated 
dorsally and are barely half the size of the antennae. The antennae (Figs. 3 
and 4) are ventral, two-jointed, short and stout. The terminal joint, which 
is much the longer, terminates in a powerful, incurved, sharp-pointed claw. 
The mandibles are falciform as is usual in this family, instead of styliform as 
in the Lernaeopodidae, broad at the proximal end, and tapering to a more 
or less attenuated distal extremity. Both margins appear minutely serrated 
under a low magnification, but in reality the teeth, which resemble prickles, 
