MUSEUM OF COMPARATIVE ZOOLOGY. 247 
are of slender spatulate shape, evenly rounded at the end, and beautifully and 
finely serrate. Legs excessively slender and elongated, three and three fourths 
times the length of the body (with rostrum and abdomen). "The proportion of 
the joints are much as in C. colossea but the tarsus (7th) is more than 
twice the propodus, and the dactylus is scarcely more than one third the propo- 
dus. Both tarsus and propodus (Fig. 11) are unarmed. The surface is every- 
where finely granular. The legs have a few hairs, arranged as in C. colossea. 
Color pale yellowish, the stomach showing through as a conspicuous reddish- 
brown stripe. 
Length of body (including rostrum and abdomen) . . . . 44.5 mm. 
ys rostrum ogc. taxe dude Aur Wo o. Ox CORLUM ACIE 
ii DOT A Wiig o eu NN dU 
8 AOOGSSOLV CHE ด a 0 ๐ 
uix dnrbulatory lege qe PET SA ON 3 3 3 3 3 Chute 
Extent . 2 20 
A single specimen from locality 338, 922 fathoms, N. Lat. 38? 18' 40", 
W. Long. 73? 18' 10”. 
This wonderfully attenuated species is widely different from the two pre- 
ceding, from which it is easily distinguishable by its extraordinary rostrum, pe- 
culiar oculiferous segment, and the proportions of the palpal joints. 
SCZEORHYNCHUS, gen. nov. 
Body conspicuously segmented. Oculiferous segment elongate. Rostrum 
large, pyriform, unjointed. Accessory legs present in both sexes, with eleven 
joints. ' “Antenne” four-jointed, chelate. Palpi composed of ten joints. Ab- 
domen unjointed. Legs slender ; dactylus without auxiliary claws, 
This genus resembles in general appearance Hurycide, Schiódte (Zetes, Kréyer), 
and forms one of a very distinct group of genera, including Hurycide, Parazetes, 
Ascorhynchus Gnamptorhynchus, which should perhaps constitute an indepen- 
dent family. All possess a very characteristic, large, pyriform, three-sided ros- 
trum, which is usually directed downwards, and may be folded backwards under 
the body. They further agree in the small rudimentary “antenna,” well-devel- 
oped palpi, slender legs, straight and simple tarsus and propodus, absence of aux- 
iliary claws, and in the possession of accessory legs by both sexes. The most 
marked character of Scworhynchus is the presence of strongly chelate “antennæ ” 
in the male, while in the female the chelæ are quite rudimentary. Eurycide, as 
described by Króyer and others, has non-chelate, three-jointed “antennæ.” The 
form figured in Gaimard’s Voyages en Scandinavie, Laponie, etc., as Króyer's 
species, appears to have the rudiment of a fourth joint, agreeing with the fe- 
male of Sceorynchus ; and it is therefore possible that the two genera do not 
differ essentially in the structure of the “antenna.” The other characters are, 
however, quite sufficient to separate them. 
It may be questionable whether our form should be generically separated from 
