ON THE SHETLAND CRUSTACBA, TUNICATA, ETC, 283 
not quite so long as carpus, ovate; palm continuous with the hand, with 
a row of about eight strong spines; finger gently curved, shutting 
closely against the hand, which it nearly equals in length. Second 
gnathopods in general character very like the first, but the propodos 
somewhat broader and longer (as long as carpus), with two or three 
Jongitudinal rows of hairs in place of the spines of the first pair, and 
the finger only about half its length. Basos of the anterior pairs of 
perelopods of somewhat twisted form, the front margin armed with 
several (5-6) strong spines. All the uropods subequal in length, bear- 
ing the same general characters as in the genus Microdeuteropus. 
Telson tubular. Length a third of an inch. A single specimen pro- 
cured in 1863. 
Protomedeia pectinata,n.sp. Superior antenne with second joint of peduncle 
subequal in length to but much more slender than first, last joint two- 
thirds length of second; filament slightly longer than peduncle, con- 
sisting of about ten long articulations ; secondary appendage two-jointed, 
scarcely longer than first articulation of filament. Inferior antennz 
subpediform, short; filament not longer than last joint of peduncle. 
First gnathopods having basos fringed anteriorly with a few scattered 
long sete; ischium having a postero-distal dense tuft of long sete ; 
meros, carpus, and propodos all posteriorly thickly clothed with rather 
long sete, the last two subequal in length, the propodos oblong, sub- 
parallel sided, twice as long as broad, distally truncate ; finger strong, 
much longer than the truncated extremity of propodos, not internally 
serrate (asin Q ot Microdeuteropus versiculatus, which this species re- 
sembles in general structure of first gnathopods), but furnished with a 
single large spine on the inner edge near the apex. Second gnathopods 
haying basos long (equal in leng th to four succeeding joints), posteriorly 
straight, anteriorly convex, and furnished with two rows (one on edge 
and the other a little within it) of very long slender sete, arranged in a 
comb-like manner; ischium and meros narrower than carpus; carpus 
narrow, only slightly widening distally ; propedos subequal in length to 
carpus, lanceolate, tapering from base to distal extremity, both margins 
fringed with long sets, those of the anterior side the longer; finger 
long, narrow, of equal thickness throughout, more than half as long as 
propodos, not unguiculate, nor capable of being bent back upon the pro- 
podos; the blunt distal extremity terminated by two or three sete. 
First pereiopods not having the meros anteriorly produced ; finger very 
long and slender, subequal to propodos, and much longer than carpus. 
Last pereiopods with hinder margin of basos not serrated, furnished with 
a row of distant sete, which take their origin from some little distance 
within the margin. Telson and uropods closely resembling in structure 
those of the species of Microdeuteropus. 
A single specimen (a female?) dredged in St. Magnus Bay, 1867. 
—— (?) W hitei, Bate. Five to eight miles off the island of Balta, 40-50 
fathoms, and in Balta Sound, about 7 fathoms. 
This species is certainly no Protomedeia; the squamate, double telson 
separates it from that genus. I believe it to be the female of Lillje- 
borgia Shetlandica; at any rate the male of the present species most 
closely resembles the drawing and description of that species in all 
respects except that the basos of the last pereiopods is not so distinctly 
serrated as figured. Unfortunately my type specimens of Lilljeborgia 
Shetlandica have been mislaid ; and for the present it will be better to 
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