of the Fishery Board for Scotland. 271 
Hurydice pulchra, Leach. 
Hurydice was taken with the surface tow-net by the “St. Andrew ” on 
October 15th while at anchor in Lerwick Bay, Shetland ; only one or two 
specimens were observed. Rev. A. M. Norman has recorded the same 
species from St. Magnus Bay. 
IDOTHEID&. 
Idothea pelagica, Leach. 
Specimens of this small Isopod were frequently observed in the 
stomachs of Pollacks and Flounders, Plewronectes jflesus, captured in the 
salmon-nets in the Bay of Nigg during the past spring and summer 
(1900) ; sometimes they occurred in considerable numbers and in a fairly 
perfect condition. The same Isopod was also occasionally observed in 
tow-net gatherings collected in the Bay; the specimens observed com- 
‘prised both males and females—some of the latter with ova. 
Idothea emarginata (Fabricius). 
This Zdothea was also of frequent occurrence in the stomachs of fishes 
captured in the salmon-nets in the Bay of Nigg; it was also obtained in 
some of the gatherings collected by the “Garland” off Aberdeen in 
November last. 
Idothea linearis (L.). 
This species was obtained in the stomachs of Pollacks captured in the 
salmon-nets in the Bay of Nigg—especially in the stomachs of those 
captured in April. In one or two of the stomachs of Pollacks captured 
on the 2nd of the month Jdothea baltica, pelagica, emarginata, and 
linearis were observed, together with Paratylus swammerdami, Amathilla 
homart, Parajassa pelagica, Caprella septentrionalis, aud a post-larval 
Eel, ‘‘ Leptocephalus.” 
ARCTURIDZ. 
Astacilla intermedia (Goodsir). (=Astacilla affinis, G. O. Sars.)* 
Males and females of this Isopod were obtained in three separate 
gatherings of Crustacea collected by the “St. Andrew” about fifty miles 
south-east of Fair Island, in about 65 fathoms, on October 19th, but only a 
few specimens altogether were observed. Another species—Astacilla 
longicornis (Sowerby)—is described by Rev. A. M. Norman as common in 
the Shetland Islands.t No specimens, however, were observed in the 
gatherings collected by the ‘‘St. Andrew,” but a few were obtained in 
one of the deep-water gatherings collected by the ‘‘Garland” off Aberdeen 
on October 25th; this gathering was from 60-fathoms. It also occurred 
in a gathering from 45 fathoms collected on November 11th. 
Arcturella dilatata, G. O. Sars. 
This somewhat rare species was obtained in one of the gatherings col- 
lected to the east of the Fair Island on October 12th. The only other 
* Sars, ‘‘ An Account of the Crustacea of Norway,” vol. ii., Parts v. and vi. (1897), p. 90, 
Pl. XXXVII., fig. 2. The Rev. A. M. Norman considers that A. affinis, G. O. Sars, is 
identical with Goodsir’s A. intermedia. 
+ Brit, Assoc. Rept., 1869, p. 289. 
