of the Fishery Board for Scotland. 



151 



inner aspect (fig. 12). The female as seen from the side is moderately 

 and evenly rounded on the dorsal aspect and somewhat flattened below, 

 as shown in figure 13. 



The antennules appear to be four-jointed, but the end joint is very 

 small, while the penultimate joint is nearly as long as the preceding two 

 joints taken together (fig. 14). 



The second maxillipeds are moderately large and composed of four 

 joints • the first and second joints are robust, and the second is consider- 

 ably more elongate than the next two joints combined, which are short 

 and narrow, and furnished with a short terminal claw (fig. 15). This 

 form does not agree with any species known to me. No males were 

 observed. 



(?) Sphceronella sp. from a Ee?nilamprops rosea (Norman). 



A moderately large Sphceronella, bright red in colour, was quite 

 recently obtained in the marsupium of a specimen of Hemilamprops rosea 

 (Norm.) captured in Loch Fyne by Dr. Williamson. So far as I am 

 aware no Choniostomaton has yet been recorded from this species of the 

 Lampropidse. 



ISOPODA VALVIFERA. 



Fam. Arcturidje. 



Genus ArcUirella, G. 0. Sars, 1897. 



Arcturella dilatata, G. 0. Sars. PI. xiii., fig. 11. 



1897. Arcturella dilatata, G. 0. Sars, Crustacea of Norway, vol. 

 ii., p. 92, pi. xxxviii. 



A male specimen of this species was obtained in some material dredged 

 off St. Monans on May 22, 1901. The species appears to be widely 

 distributed, but moderately rare. The late Dr. Robertson has recorded 

 this species from the Firth of Clyde, and I have observed one or two 

 specimens in gatherings dredged off Fair Island in October, 1900. 





DESCRIPTION OF THE PI 



ATES. 







PLATE X. 







Pseudocyclopia giesbrechti, Wolfenden. 



Diam. 

 x 90. 



Fig. 



1. Male, side view ..... 



Fig. 



2. Antennule 



, 





. x 260. 



Fig. 



3. Antenna ... 







x 260. 



Fig. 



4. Foot of first pair . 



. 





x 260. 



Fig. 



5. Foot of second pair 







x 260. 



Fig. 



6. Foot of third pair 



. 





x 260. 



Fig. 



7. Foot of fourth pair 







x 260. 



Fig. 



8. Foot of fifth pair. 



. 





x 260. 



Fig. 



9. Abdomen and furcal joints 





x 195. 





Euryte longicauda, Philippi. 





Fig. 



10. Female, dorsal view ...... 



x 90. 



Fig. 



11. Antennule ....... 



x 195. 



Fig. 



12. Foot of fifth pair 



• 





x 390. 



