50 CRUSTACEA COPEPODA. II. 
The parasite lives “in the nasal fossee or spiracles’ of Raja batis. The Copenhagen Museum possesses 
4 specimens from Iceland; 3 of these have been determined by Kroyer and may be those mentioned by him 
in 1837. 
Distribution. — Firth of Forth; fish-market at Aberdeen; Irish Sea; Cornwall (various authors). 
Kroyer saw it in Aalbeek, far north on the east coast of Jutland; besides known from Skager Rak, and at 
Norway from Christianssund (Retzius) and Storeggen (west of Norway) (Olsson). Finally it is recorded from 
the Adriatic (Valle) and Genova (Brian, 1898) as living on some other species of fishes. 
63. Charopinus cluthe T. Scott. 
1900. Lerneopoda cluthe 'T. Scott, 18th Annual Rep. Fish. Board Scotland, p. 173, Pl. VIII, figs. 27—37. 
!IQ13. — — T. & A. Scott, Brit. Paras. Cop. p. 198, Pl. XL, figs. 1—3; Pl. LVI, figs. 1—7; 
Tl, JENVIOOL, ste, 10, 
According to Scott’s figure of the male its abdomen is well segmented, consequently the species has 
with good reason been referred to Charopinus by Wilson (op. cit. p. 653); yet it may be remarked that the 
last-named author commits a curious error in the same paper in also referring this form to Lerneopodina 
Wilson (p. 632 and 640). 
Occurrence. — Taken by the “Ingolf’”’ at a single locality. 
North-West Iceland: Isafjord, on the branchiz of Raja radiata; 3 females. 
Distribution. — According to Scott only known from two places at Great Britain, viz. in the Firth 
of Clyde on Raja fullonica, and Northumberland coast on Raja radiata. 
64. Charopinus ramosus Kroyer. 
11863. Charopinus ramosus Kroyer, Nat. Tidsskr. 3. Rekke, B. II, p. 358, Tab. XIV, fig. 5, a—i. 
!IQ13. -- — 1. & A. Scott, Brit. Paras. Cop. p. 191, Pl. LV, figs. 6, 7, Pl. LIV, figs: x8—22" 
The females enumerated below from the “Ingolf’’ area differ from Kroyer’s and Scott’s figures in 
having the caudal rami very much shorter; besides the terminal rami on the maxille, though slender, decrease 
considerably in thickness from the base to the obtuse end. 
Occurrence. — Secured by the “Ingolf’” at two places. 
North-West Iceland: Isafjord, in a branchial cavity of Raja radiata; 1 female. 
East Iceland: Eskifjord, in the posterior pair of branchial chambers, 2 females, one among them 
with a male. 
Distribution. — According to Scott “on the gills and gill-arches of Raia clavata and Raia macu- 
lata’; fish-market in Aberdeen, and Irish Sea. Besides Nymindegab, west coast of Jutland (Kroyer). 
Salmincola Wilson. 
Three species are to be recorded. Wilson enumerates 20 species of this genus, but I suppose that 
an investigation based on very rich material may reduce the number. 
