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Part III — Fifteenth Annual Report 



7 mm. in length. (Notwithstanding the marked difference between 

 ova-bearing specimens of /. tricuspidata and I. pelagica, it is now cus- 

 tomary to consider both as belonging to the one species, viz. Idotea 

 marina, Linne.) 



Astacilla longicornis (Sowerby). — Upper Loch Fyne, in the centre, in 

 36 to 70 fathoms; also off Dunderave (M.). East Loch Tarbert (Mini). 

 Off Skate Island, in 105 fathoms (Robertson). 



Janira maculosa, Leach. — East Loch Tarbert, under stones at low 

 water, and dredged ; generally distributed (Mihi). 



Jcera (T) 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 balanoides 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). 



Athelgue paguri (Rathke). — Occasionally obtained on Eupagurus 

 bernhardus in East Loch Tarbert and neighbouring parts of Loch Fyne. 



Pseudione Hyndmanni (Bate and Westwood). — This species (both the 

 form known as " Phryxus Hyndmanni" 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 specimen of Eupagurus 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. 0. Sars, is followed in 

 the classification and nomenclature of this group. 



Hyperiidea. 



Hyperia galba (Montagu). — East Loch Tarbert, associated with 

 Aurelia aurita (B. & S.). 



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 Bpiearide kno\vn as Microniscus, and which is found sometimes on 

 Calanus. 



