REPORT ON THE PYCNOGONIDA. 49 
but they are almost all broken at the extremity, their numbers are respectively 14, 14, 
13, 13. On the fourth joint hairs are scarce, on the fifth there are a great many small 
hairs vertically implanted on the surface of the joint, the hairs of the sixth and the four 
last joints are also numerous: they are larger than those of the fifth joint. 
The legs are very slender: ina male of 8 mm. their length is nearly 32 mm. The 
second joint is more than twice as long as the third, the fifth joint is only a little longer 
than the fourth ; the sixth is once and a half as long as the fifth. The two tarsal joints 
are nearly equal. The claw is short, being one-third the length of the last joint of the leg. 
The accessory claw is not half as large as the claw. The first joints of the leg are 
nearly ‘smooth, but from the sixth to the eighth they are covered with very small 
rough hairs. 
The colour of this species is a dark brown, much darker than is the case with the 
other species.. There are in all three specimens, of these two are mature males (one fur- 
nished with eggs), the third is a very smal] one with broken accessory legs. I consider 
it a young male. Genital pores I observed only on the second joint of the two last legs. 
Habitat.—This species was found off Kerguelen Island at a depth of 25 fathoms. 
Station 149. January 17, 1874. Lat. 49° 40’ S., long. 70° 28’ E. Off Royal 
Sound. Depth, 25 fathoms. 
Observations.—This species shows a certain resemblance to Nymphon gracilipes, 
Miers. Yet there are too many small differences for me to feel justified in consider- 
ing the two forms as identical. The form of the oculiferous tubercle is not as figured 
by Bohm, the claws of the mandibles are shorter and not so straight as in Nymphon 
gracilipes, Miers (after Bohm, Pycnogon. des Museums zu Berlin, Monatsb. der K. 
Akad. der Wiss. zu Berlin, p. 170, 1879) ; the length of the fourth joint of the accessory 
legs is different,’ the length of the two tarsal joints, of the claw, the colour of the whole 
animal, so characteristic in my Nymphon fuscum, is quite different from that described 
by Bohm (fast weiss bis hellbriunlich, Bohm, Joc. cit., p.. 172). There can be little 
doubt, however, that these two forms are closely allied. 
Nymphon brevicaudatum, Miers (Pl. IV. figs. 12, 13, Pl. V. fig. 1-5. — Nymphon 
hispidum, un. sp., is marked on the plates). 
Nymphon brevicaudatum, Miers, Ann. and Mag. of Nat. Hist., vol. xvi. p. 107, 1875 ; Crustacea of 
Kerguelen Island, Phil. Trans. Lond., vol. clxviii. (extra vol.) pp. 200-214, pl. xi. fig. 8, 1879. 
Nymphon horridum, Bohm, Pyenogoniden des Museums zu Berlin, Monatsber. der K. Akad. 
der Wiss. zu Berlin, 1879, p. 172, taf. i. fig. 3-37. 
Description.—The body of this species is very robust, and has the lateral processes 
scarcely separated. The proboscis is comparatively short and bears a small mouth ; the 
1 Bohm, loc. cit., taf. i. fig. 1d, represents the sixth joint of the ovigerous leg as furnished with denticulated spines. Of 
course this is a mistake. 
(ZOOL. CHALL. EXP.—PART x.—1881.) K7 
