136 Part I11.—Fifteenth Annual Report 
7 mm. in length. (Notwithstanding the marked difference between 
ova-bearing specimens of JI. tricuspidata and I. pelagica, it is now cus- 
tomary to consider both as belonging to the one species, viz. I[dotea 
marina, Linné.) 
Astacilla longicornis (Sowerby).—Upper Loch Fyne, in the centre, in 
36 to 70 fathoms ; also off Dunderave (M.). East Loch Tarbert (Mihi). 
Off Skate Island, in 105 fathoms (Robertson). 
Janira maculosa, Leach.—East Loch Tarbert, under stones at low 
water, and dredged ; generally distributed (Mihi). 
Jera(?) Nordmanni, Rathke——Upper Loch Fyne, between Lowburn 
and Dunderave Castle, in a bottom tow-net gathering (G.). East Loch 
Tarbert (Mihi). 
Leptaspidia brevipes, Bate and Westwood.—East Loch Tarbert, not 
common (Mihi). 
Cryptothir balani (Spence Bate).—East Loch Tarbert, associated with 
Balanus balanoides. While examining a number of specimens of Bal- 
anus balanotdes at Tarbert Laboratory, a specimen of Cryptothir, a female, 
was obtained in the sixth Balanus examined, but though several hundreds 
of the same species of Balanus were afterwards carefully dissected, no 
more Cryptothir balani were found (Mihi). 
24) 
Athelgtsa pagurt (Rathke).—Occasionally obtained on Hupagurus 
bernhardus in East Loch Tarbert and neighbouring parts of Loch Fyne. 
Pseudione Hyndmanni (Bate and Westwood).—This species (both the 
form known as *‘ Phryxus Hyndmannt”’ and that described as “ Phryxus 
fusticaudatus”),* was obtained in Loch Fyne, near Tarbert. ‘“‘ Phryxus 
Hyndmanni” was taken from a specimen of Hippolyta varians, but 
“ Phryxus fusticaudatus” was obtained from a specimenot Hupagurus bern- 
hardus. As regards ‘‘ Phryxus fusticaudatus” the following note was 
made at the time of its discovery—“It agrees verywell with the figure 
given in Bate and Westwood’s monograph; the clavate lobes on each 
side of pleon and the “‘spathulate” terminal segment are well developed.” 
(This specimen was unfortunately lost.) 
AMPHIPODA. 
The Amphipoda of Norway, by Professor G. O. Sars, is followed in 
the classification and nomenclature of this group. 
Hyperudea. 
Hyperia galba (Montagu).—East Loch Tarbert, associated with 
Aurelia aurita (B. & 8.). 
Hyperoche tauriformis (Spence Bate).—Loch Gair, near Quay Ferry, 
Upper Loch Fyne (G.), These two species of the Hyperiidea, though 
* This specimen of Phryxus fusticaudatus was a mature female with numerous 
embryo young enclosed under the ovigerous plates: these embryos closely resemble 
the parasitic Epicaride known as Microniscus, and which is found sometimes on 
Calanus. ; 
