330 PERCY SLADEN TRUST EXPEDITION. 
at the distal end than the simple hand, which tapers to the base of the dactylus and is 
covered with slender spines (fig. 2, gz.1). 
Gnathopod 2. Second joint subequal to the next 3; wrist subequal in length and 
width to the hand, which is pyriform and spinous. Dactylus curved, about one-third the 
length of the palm. Branchial vesicle expanded below. 
Perzeopods land 2. Second joint rather wider than 4th and 5th; 6th subequal to 5th, 
but much narrower (fig. 2, pp.! & pp.?). 
Per. 3 and 4. Second joint narrow as in per. 1 and 2, which they resemble. The 
side plate of per. 4 apparently consists of the 1st joint only as in S. christianiensis (fide 
G. O. Sars, Crust. Norway, pl.-70. fig. 2,p°). 6th joint longer than 4th and 5th united 
(fig. 2, pp.*). 
Per. 5 reaches to the end of the 4th joint of per. 4; hind margin of 2nd joint pro- 
duced downwards and rounded below, smooth. Side plate small, quadrate (fig. 2, pp.’). 
Uropod 1 extending beyond 2 and 8; peduncle rather longer than the outer ramus, 
which is blunt at the point; inner ramus shorter than the outer, acute. 
Ur. 2 smooth. Inner ramus longer than uropod 3; shorter than the outer, acute; 
outer blunt. 
Ur. 8 smooth. Rami much longer than the peduncle ; outer one-third longer than the 
inner, curved outwards, blunt; inner straight, acute (fig. 2, T+-wp.°). 
Telson wider than long, not quite reaching to the middle of the peduncle of uropod 8, 
divided about one-third of its length (fig. 2, T+ wp.*). 
Length of large specimen 12 mm. 
This species is intermediate between Stegocephalus and Stegocephaloides, resembling 
the former in the even curve of the hind and lower margins of the 4th side plate and the 
7-jointed flagellum of ant. 1, and the latter in the long Ist joint of the flagellum and 
especially in the narrow 2nd joint of perseopod 4. Although it does not harmonize 
with either genus as restricted by G. O. Sars, yet it does with Stegocephalus as defined 
both by Spence Bate (1862) and Boeck (1876). Kroyer’s description has been shown to 
be erroneous. The great depth of the first 4 side plates and the peculiar structure of 
the uropods are conspicucus characters. 
Genus PARANDANLIA, Stebbing, 1899. 
7. Parandania boecki (Stebbing). 
I. Lat. 8° 16'S., long. 51° 26’ E.: Plankton, aa, 900 fms.: one. N.W. of Desroches : 
Plankton, 750-0 fms.: two. Length 8-10 mm. 
Agrees well with the ‘ Challenger’ description, except the rami of uropods 1 and 2, 
which are not spinous, but finely pectinate on the inner margins. 
Genus AMPELISCA, Kroyer, 1842. 
8. Ampelisca scabripes, A. O. Walker, 
II. Wasin, mud, 10 fms. One: length 4 mm. 
