New Parasitic Capepod — Shiino 
61 
about, whereas P. hirsutus crawls over the in- 
side of the gill operculum, and is, further, 
capable of swimming to a certain extent. The 
carapace in the former has the lateral parts 
folded over ventrally and is not flattened as in 
the latter. In this point, Alicaligus differs from 
Caligodes also, but resembles Abasia. The cara- 
pace of Alicaligus , however, is not produced 
forward as a narrowed neck and is furnished 
with sucking disks on the frontal plates. In 
addition the genital segment and the abdomen 
are relatively broader than in Abasia. Alicaligus 
differs, finally, from any of the known genera 
in that the third legs have 1 -jointed rami, the 
inner member of which is almost rudimentary. 
t 
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— 1908. North American parasitic cope- 
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