22y 
34. Family CEYLONIIDAE nov. 
The body is rather slender and cylindrical and resembles C/efodes in general appearance. 
The abdomen is four-jointed in the female, and five jointed in the male. The antennules are 
comparatively short and seven-jointed in the female. The antennules of the male are prehensile. 
The exopodite of the antennae is small and one-jointed. The mandibles, maxillae and first 
pair of maxillipedes are similar to those of C/efodes. The second pair of maxillipedes is 
extremely rudimentary and non-prehensile. The first four pairs of feet are very short. The 
exopodites are three-jointed. The endopodites are two-jointed and shorter than the exopodites. 
The fifth pair of feet of the female is foliaceous and two-jointed. The male fifth pair consists 
of a single plate. 
The type of this family is Ceylonza armata (Claus). This Harpacticoid is readily 
recognised by the very rudimentary mouth organs, but more especially by the non-prehensile 
second pair of maxillipedes. This pair consists of flattened triangular plates without articulated claw. 
Genus Ceylonia Thompson and Scott, 1903. 
=Jurinia Claus, 1866, a name preoccupied by DESVOIDy (Dzpéera), 1830. 
The body is rather slender and cylindrical, with no sharp distinction between the 
anterior and posterior divisions. The cephalic segment is of moderate size and is provided 
with a small rostrum. The antennules are short and seven-jointed in the female. The last joint 
of the endopodite of the antennae is furnished with six short and very stout spines. The 
exopodite is small and one-jointed. The mandible has very few teeth. The palp is short and 
is indistinctly two-jointed. The maxillae consist of a biting part and one small lobe. The 
first pair of maxillipedes is furnished with two digitiform lobes and a terminal claw-bearing 
joint. The second pair of maxillipedes is very rudimentary and consists of a thin wedge-shaped 
non-prehensile plate which terminates in a rudimentary curved claw. The claw is not articulated. 
The exopodite of the first pair of feet is short and three-jointed. The endopodite is two- 
jointed and is shorter than the exopodite. It terminates in a moderately strong spine. The 
exopodites of the second, third and fourth pairs of feet are slender and three-jointed. The 
endopodites are two-jointed and are shorter than the exopodites. The fifth pair of feet of the 
female is moderately large and foliaceous, and is two-jointed. The proximal joint has the inner 
portion considerably expanded. The male fifth pair is also foliaceous, but there is no trace of 
a division. 
This genus was established by the late I. C. THompson and the writer in the report 
on the Ceylon Copepoda collected by Professor HERpMAN in 1903. We were unaware that 
Cxaus established the genus /urzuza in 1866, for a Copepod identical with the one described 
by us as Ceylonza aculeata. The name adopted by Craus, however, had already been used 
by Desvorpy in 1830, and must necessarily lapse. 
The genus is at present represented by a single species. Specimens belonging to it 
were found in the material collected by the ‘Siboga’ in the Malay Archipelago. 
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