GEORGE H. CARPENTER—PYCNOGONIDA,. 257 
boscis short and stout. Leg-bearing segments slender, with processes well 
separated. Abdomen very short (fig. 1). Hye-eminence prominent with 
somewhat blunt apex, eyes large (fig. 2). Chelifori small, but with “ hand ”’ 
and “ finger”’ relatively elongate, strongly curved, and armed with prominent 
teeth (fig. 3). Palp with 2nd segment longest, 3rd and 4th subequal, 5th 
about a half shorter than either of latter (fig. 4). Oviger with elongate 5th 
segment ; denticulate spines on terminal segments comparatively simple, 
usually with four serrations on each side (figs. 5,6). Legs, like body, smooth, 
almost devoid of spines ; 2nd coxal segment four times as long as the first ; 
thigh rather shorter than Ist tibial segment, which is about equal in length to 
the 2nd tibial segment (fig. 1); propodus two and a half times as long as 
tarsus, bearing a rather broad claw and slender elongate auxiliary claws ; a 
few feeble spines and bristles beneath the propodus (fig. 8). The colour of 
the animal is yellow with scattered black spots (fig. 1). 
Hlalitat. Port Sudan Harbour, Red Sea; on a buoy among crowded 
Margantifera vulgaris, Jane 1906. Three males, one with eges. (Type in 
Zoological Museum, Liverpool.) 
The very elongate neck and body together with the short abdomen, 
excessively long 2nd coxal segment, and well-developed auxiliary claws serve 
to distinguish this species from other members of the great genus Nymphon- 
Examination of the nervous system shows that the two hinder ganglia are 
both situated in the third leg-bearing segment (fig. 9). The male with eggs 
attached to the oviger (fig. 1) has the fourth and fifth seaoments of that limb 
longer than in the other specimens (from one of which fig. 5 was drawn). 
Perhaps the latter are not quite adult. The egg-imass is elongate. A few of 
the eggs are hatched, the larva (fig. 7) being of the typical pyenogonid type 
with three pairs of appendages. The cheliforus has its cement-gland opening 
at the tip of a long sickle-shaped process. The succeeding limbs have no 
fringe of swimming-hairs ; the terminal segment in each bears a prominent 
claw-like process. 
The denticulate spines on the terminal segment of the oviger show an 
interesting transition from a very simple condition to a typical nymphonid 
deticulate spine, in which, however, there are only four sinuate prominences 
on each side besides the usual basal tooth. 
Family Pallenide. 
PaLuLeNopsis, Wilson. 
PALLENOPSIS CROSSLANDI, sp. nov. (Plate 27. figs. 10-20.) 
Female, length 8 mm. (including proboscis and abdomen). 
Body broad, ovate, with lateral processes of segments close together ; terga 
of 3rd and 4th leg-bearing segments fused. Head half the length of body 
