GL CHELOPHORES, PALPI, Eric. 507 
these the terminal portion or “hand” forms a ae ? ae 
of which the ultimate joint forms the “movable finger.” In 
some species of Mymphon the chela is greatly 
produced and attenuated, and armed with 
formidable serrate teeth on its opposing edges ; 
in others it is shortened, with blunter teeth ; 
in Boreonymphon vrobustum the claws are 
greatly curved, with a wide gape between. 
In this last, and in Phoawichilidium, the oppos- 
ing edges are smooth and toothless. In Cordy- Pia. 268. — Proboscis 
lochele the hand is almost globular, the movable 224 _chelophores of 
Cordylochele longt- 
finger being shortened down, and half enclosed coilis, G.0.8. (After 
by the other. Sars) 
Palpi—tThe second pair of appendages, or palps, are absent, 
or all but absent, in the adult Pycnogonum, Phouxichilus, Phoxi- 
chilidium, Pallene, and their allies. In certain of these cases, 
e.g. Phoxichilidium, a knob remains to mark their place; in 
others, e.g. Pallenopsis, a single joint remains; in a few Pallenidae 
a sexual difference is manifested, reduction of the 
appendage being carried further in the female than 
in the male. The composition of the palps varies 
in the genera that possess them. In Nymphon 
there are five joints, and their relative lengths 
(especially of the terminal ones) are much used 
by Sars in defining the many species of the genus. 
The recently described Paranymphon, Caullery, has 
palps of six or seven joints. In the Ammotheidae 
Fie. 269.—Eury- the number of joints ranges from five or six 10 
ee ae Tanystylum to nine (as a rule) in Ammothea and 
stalked pro- Oorhynchus, or ten, according to Dohrn, in certain 
ee “iS- species of Ammothea.  Colossendeis and the Eury- 
cididae have a ten-jointed palp, which in this last 
family is very long and bent in zigzag fashion, as it is, by the way, 
also in Ammothea. The terminal joints of the palp are in all cases 
more or less setose, and their function is conjecturally tactile. 
Ovigerous Legs.—Custom sanctions for these organs an 
inappropriate name, inasmuch as it is only in the niles that 
they perform the function which the name connotes." They 
1 As a rare exception, Hoek has found the eggs carried on the ovigerous legs in 
a single female of Nymphon brevicaudatum, Miers. 
