of the Fishery Board for Scotland. 449 
clusion—it might easily escape capture by the dredge or the trawl by 
burrowing deep into the soft mud which forms the floor of the more cen- 
tral portion of the estuary of the Forth; but its occurrence in the 
stomachs of the Long Rough Dab and the Witch Sole indicates that it 
does not always remain in hiding, but occasionally comes to the surface 
of the mud in which it burrows, and though it may have escaped being 
captured by the dredge or the trawl, it apparently does not always escape 
the fishes that happens to be on the look-out for food, yet we can find no 
reference to its ever having been observed even in the stomachs of fishes 
taken within the estuary. Calocaris is considered to be somewhat slug- 
gish in its habits, because specimens are occasionally found overgrown 
with a small zoophyte ; but such habits should make its capture by trawl 
or dredge of more easy accomplishment, Moreover, it is not such a small 
species as to be easily passed over, and it is sufficiently distinct that any 
one with a fair knowledge of the Crustacea would be likely to recognise 
it as different from the more common forms, yet the fact remains that not 
one of the many students who have investigated the Crustacean fauna of 
the Firth of Forth appears to have obtained any evidence to lead them to 
regard it as even of doubtful occurrence within the limits of the estuary. 
Whether Calocaris be a recent introduction or not, there is apparently 
no doubt as to its having now a right to be reckoned amongst: the 
Crustacean fauna of the Forth. 
The number of Crustacea recorded in the present paper is scarcely so 
large as in that published last year, but there are included several species 
apparently undescribed, and others which are new or rare in the Scottish 
seas. The following are the more interesting of the species recorded :— 
Aanthocalanus (%) borealis, G. O. Sars. 
(?) Phenna zetlandica T. Scott (sp. n.) 
Scolecithri« (2) brevicornis, G. O. Sars. 
Platypsyllus minor, T. Scott (gen. et sp. n.). 
Nereicola concinna, T. Scott (sp. n.). 
Stenhelia confusa, T. Scott (sp. n.). 
Ameira tenuicornis, T. Scott (sp. n.). 
Ameira propnqua, T. Scott (sp. n.). : 
Pseudomesochra longifurcata, T. Scott (gen. et sp. n.). 
Leptopontia curvicauda, T. Scott (gen. et sp. n.). 
Normanella attenuata, A. Scott. 
Fultoma hirsuta, T. Scott (gen. et sp. n.). 
Monstrilla longiremis, Giesbrecht. 
Thaumaleus thompsoni, Giesbrecht. 
Pseudopsyllus elongatus, T, Scott (gen. et sp. n.). 
Acontiophorus ornatus (Brady and Robertson). 
Cancerilla tubulata, Dalyell. 
Salenskya tuberosa, Giard and Bonnier. 
It will be observed from the above list that five new genera and ten 
new species are described in the present paper. There were a few other 
interesting organisms observed, such as Arca pectunculoides and Cadulus 
subfusiforr mis * (tivo species of Mollusca), but valves only of the a and 
a recently dead specimen of the other, were obtained. 
The following is a detailed description of the more intarestne ob the 
species of Crustacea observed in the numerous gatherings examined dur- 
ing the year :— 
