296 nEroET—“1868, 
Another marine species found among weeds at Hillswick, Shetland, 
and also at Tobermory in the Isle of Mull. A much smaller species 
than the last, and, if it were yot for the greater number of joints in the 
antennee, not unlike C. magniceps of Lilljeborg. 
Longipedia coronata, Claus, Die frei lebenden Copepoden, p. 111, pl. xiv. 
figs. 14-24. Abundant at Hillswick. 
Amymone falcata, n. sp. Superior antenne in female 8-jointed ; second joint 
the longest, fourth shorter than any of preceding ; in male second and 
fourth joints subequal, and twice as long as third. First segment in- 
feriorly much produced, and extending backwards in an acute falcate 
form. Hand long ovate, palm fringed with long cilia; finger nearly as long 
as palm, very slender. The coalesced sixth segment has the infero- 
posteal corner produced backwards into a somewhat hamate spine-formed 
process. Pereiopods long and slender, extending beyond the body. 
In most particulars this species comes near to As spherica, Claus ; 
but the first segment is widely different, being of similar form to that of 
A, harpacticoides, Claus, but still more produced. 
Among Laminariz, Bressay Sound, 1867. 
Tisbe furcata (Baird) = Canthocamptus furcatus, Baird, Nat. Hist. Brit. 
Entom. p. 210, pl. xxv. figs. 1, 2, and pl. xxx. figs. 4-6, = Tisbe furcata, 
Lilljeborg, De Crust. Clad. Ostrac. et Cop. in Scania occurr. p. 192, 
pl. xxv. figs. 1-5, 11, 12, and17; Claus, Die frei lebend. Copep. p. 116, 
pl. xv. figs. 1-10, =T%sbe ensife*, Fischer, Beitriige zur Kenntniss der 
Entom. p. 24, pl. xxii. figs. 67-70. Common; Lerwick, Balta, Hills- 
wick. 
Westwoodia nobilis (Baird) = Arpacticus nobilis, Baird, l. ¢. p. 214, pl. xxviii. 
fig. 2, = Westwoodia nobilis, Claus, l. c. p. 118, pl. xxi. figs. 1-9. Among 
weeds at Lerwick, 1867. 
Canthocamptus staphylinus (Jurine). Ponds, common. 
Cleta forcipata, Claus, Die Copepoden-Fauna yon Nizza (1866), p. 28, pl. ii. 
figs. 9-11. Between tide-marks, Balta Sound. The male differs from 
the female in the structure of the first feet, which are greatly longer, 
and at the same time more slender in all their parts. New to Britain. 
Dactylopus Stromii (Baird) = Canthocamptus Stromi, Baird, Brit. Kntom. 
p. 208, pl. xxvii. fig. 3, = Dactylopus Stromii, Claus, Frei lebend. Copep. 
p. 126, pl. xvi. figs. 1-6. Lerwick. 
tisboides, Claus, Frei lebend. Copep. p. 127, pl. xvi. figs. 24-28; Die 
Copep.-Fauna von Nizza, p. 27, pl. ii. figs. 1-7. Bressay Sound. 
Genus Treriorus*, n. g. 
First feet having outer branches 2-jointed, both joints very long, last wide 
at the extremity, with short recurved claws ; inner branch much shorter than 
the outer, 3-jointed; basal joint very long, two following short. Gnathopod 
(lower footjaw) of moderate size. Mandible palp 1-branched, 3-jointed. 
Ligriopus Lalljeborgit, nu. sp.= Harpacticus chelifer, Lilljeborg, De Crust. ex 
ord. tribus Clad. Ost. et Copep. p. 200, pl. xxii. figs. 2-11 (but not 
Harpacticus chelifer of other authors). Lilljeborg’s figures of this species 
are good, and by comparing those of the gnathopod and first and last 
feet with the drawings given by Claus of the same parts of the true 
Harpacticus chelifer, the chief points of distinction will be at once mani- 
fest ; the structure of the extremity of the outer branch of the first feet 
* Tiypts, a tiger; zovs, a foot. 
- Oa hat CE 
