68 TRANSACTIONS, NATURAL inSTORT SOCIETY OF GLASGOW. 



Hitherto the records for its occurrence in the Clyde are 

 "off Cuinbrae (R.), Ballantrac Bank (F.S.G.)." P. bispinosus, 

 however, is moderately common and widely distributed throughout 

 the Firth. We have taken it from several places in the Gareloch, 

 Loch Long, Loch Goil, Loch Striven, Upper and Lower Loch 

 Fyne, in depths from tive to forty fathoms ; also from several 

 places on the Barrier Plateau. I have also found the remains of 

 this little shrimp in the stomachs of Gadus minuhis (Lin.) from 

 the Largs Channel, and Merlucius merluccius (Lin.) from the 

 Barrier Plateau, about 1 mile N.W. of Ailsa Craig. 



Females had ova during July, August, and September. 



Philocheras echinulatus (M. Sars). — This species, like P. 

 sculptus (Bell), and Pontophilus spinosus (Leach), has a spiniferous 

 carapace. There are five prominent ridges which extend almost 

 the entire length of the carapace. The central one is armed with 

 three teeth, the principal ridge on either side, which is somewhat 

 irregularly formed, has six, while each of the other two lateral 

 ridges has two teeth towards the proximal end. On each side of 

 the central ridge, arising from the posterior end of the carapace, 

 is a very short ridge terminating in a small tooth. 



Dr. Henderson records, " a single specimen off Skate Island, 

 Loch Fyne, 105 fathoms, mud," and it is one of the species recorded 

 by the " Garland," as occurring " near the mouth of the Clyde 

 estuary, where it was found moderately frequent." This species is 

 distributed along the whole of the deep water of the Arran Basin 

 in depths from fifty to one hundred and seven fathoms. We took 

 about one hundred specimens from various stations in the Kil- 

 brannan Sound,* the Channel to the east of Arran, and Lower 

 Loch Fyne. Approximately, there would be about one specimen 

 taken for every six specimens of Pontophilus spinosus (Leach). 

 It was also one of the species taken by the trawl from a number 

 of places on the Barrier Plateau. Females had ova in July and 

 September. The largest specimens taken measui-ed about 40 mm. 

 in length. 



* We took from four stations in this deep trough from off Carradale to 

 the Cock of Arran, quite a number of specimens of Nika edulis, Risso, and 

 Paniphiea sivado (Risso) in 84, 76, 80, and 69 fathoms respectively. 



