128 



55. Paramisophria Cluthae, Scott. 



(PL LXXXVI & LXXXV1I). 



Paramisophria CluthoB, Scott. The Marine Fishes and Invertebrates of 

 Loch Fyne; 15th Annual Report of the Fisheries Board for Scotland, p. 147, 

 PI. II, figs. 38, PL III, figs. 1316. 



Specific Characters. Female. Body rather short and compact, with the 

 anterior division, seen dorsally, oval in form, greatest width equalling about half 

 the length, and occurring somewhat behind the middle, anterior extremity gradu- 

 ally narrowed and obtusely rounded at the tip, posterior only slightly contracted. 

 Cephalosome considerably vaulted, with the dorsal margin forming quite an even 

 curve as far as the tip of the very small rostral prominence. Last segment of 

 metasome with the subdorsal processes spiniform and pointing straight backwards, 

 lateral lobes broadly rounded, with a small indentation in the middle. Urosome 

 scarcely exceeding Va of the length of the anterior division, genital segment 

 shorter than the 2 succeeding segments combined, anal segment rather small. 

 Caudal rami about twice the length of the anal segment, and somewhat flattened, 

 all the 5 marginal setae richly plumose, the innermost but one the longest. 

 Length of anterior antennae scarcely exceeding that of cephalosome, the left one 

 slightly longer than the right, bristles of the anterior edges in both antennae 

 partly ciliated. Posterior antennae with the distal joint of the inner ramus about 

 the length of the proximal one. Last pair of legs with the inner projection of 

 2nd joint comparatively small, and cylindric in form, carrying at the tip a small 

 denticle and a slender plumose seta; terminal joint fully twice as long 1 as the 

 other 2 combined, and armed with 6 strong spines, 4 of which issue from the 

 outer edge, and 2 from the tip. inner edge straight and perfectly smooth. 



Male resembling the female, but somewhat less robust, and with the 

 urosome narrower and 5-articulate. Left anterior antenna with the middle 

 section slightly tumefied, terminal section comparatively short and imper- 

 fectly biarticulate. Last pair of legs only slightly asymmetrical, penultimate 

 joint in both legs lamellarly expanded, with a single spine outside, terminal joint 

 of right leg transformed to a slender claw carrying 2 small spines outside the 

 base, that of left leg spatulate, with 3 short spines at the end. 



Colour not yet ascertained. Length of adult female 1.20 mm., of male 

 1.10 mm. 



Remarks. This form was first described by Th. Scott from some female 

 specimens found in dredged material from Loch Fyne, Scotland. In its external 



