PYCNOGONIDS 283 
ment simple, pointing upward. Chelifori well developed; chelx strong 
and curved. Ovigera 5-jointed, sigmoid; third joint with a constric- 
tion at about one third or less of its length; last joint nearly as large 
as fourth, armed with a few (one or more) rows of unguiform spines. 
Légs slender; ¢s.1 small; ¢s.2 well developed and armed at base with 
distally curved spines; ¢/. strong; aux. cl. distinct. Genital openings on 
second coxal joints of all the legs. 
Remarks.—This genus has been made to include rather diverse forms, 
many of which, as stated by Sars, probably belong even to other families. 
Wilson (’78#) removed from these into the genus Axoplodactylus those 
forms in which the first trunk segment projects considerably beyond the 
base of the proboscis, and which have 6-jointed ovigera. I accept the 
genus Phoxichilidium as restricted by Sars (’91), “ principally character- 
ized by the cephalic segment not projecting anteriorly beyond the base 
of the proboscis, the comparatively well-developed chelifori, and the 
structure of the false legs in the male,” i.e., 5-jointed, with the last joint 
comparatively large. Sarsconcludes that but three species of the genus 
can be recognized with certainty, viz., 24. femoratum (Rathke), Ph. 
robustum Dohrn, and /%. minor Wilson. He considers the form de- 
scribed by Stimpson (’54) from the eastern coast of North America to be 
identical with %. femoratum of Europe; but Wilson (’78>), in his 
description of Ph. minor, says (p. 14): “ This species is closely similar 
to P. maxillare, of which it may be a dwarf variety”; and in a later 
paper (’80, p. 481) he adds that since the publication of the first paper 
“a much larger series of specimens has been obtained, which shows con- 
clusively that the two forms cannot be separated, though extreme forms 
appear very unlike.” Thus if 7%. maxillare is a synonym of Ph. femo- 
ratum it leaves but two species, 4%. femoratum and Lh. robustum, to be 
referred to this genus. 
PHOXICHILIDIUM FEMORATUM (Rathke). 
Plate x11, fig. 10; plate xxiv, figs. 1-5. 
Nymphon femoratum RATHKE, 1799, p. 201. 
Orithyta coccinea JOHNSTON, '37, p. 378, pl. XII, figs. 4-6. 
Phoxichilidium coccineum MILNE EDWARDS, ’49, p. 536. 
Phoxichilidium coccineum GOODSIR, ’44, p. 2, pl. I, figs. 6-8. 
? Phoxichilidium globosum GOODSIR, '42, p. 136, pl. ILI, fig. I. 
Phoxichilidium femoratum KROYER, ’45, p. 122. 
Phoxichilidium femoratum KROYER, ’49, pl. XXXVIII, fig. 2, a-g. 
? Phoxichilidium femoratum HOEK, ‘77, p. 6, Tab. Xv, figs. 8-10. 
? Phoxichilidium femoratum HOEK, ’81>, p. 512, pl. XXVI, figs. 18-21; pl. 
XXVII, fig. 19. 
Phoxichilidium femoratum HANSEN, ’84, p. 650. 
