322 LIVERPOOL MARINE BIOLOGY COMMITTEE REPORT. 



The only other piece of shore which requires special 

 mention is the flat region, known as Bay-ny-Carrickey, 

 lying between Port St. Mary and Poyllvaaish, near Castle- 

 town. Some parts of this beach are wide expanses of sand 

 and sandy mud, with occasional stones and stony pools ; 

 while other parts, especially at the Poyllvaaish end, are 

 formed by long low reefs of rock, with many pools and cre- 

 vices, and overhanging ledges, and well-covered with sea-weed 

 and incrusting animals. Pleurobranchus memhranaceus is 

 common in this locality, chiefly on the under surfaces of 

 large stones in the pools, along with very fine specimens of 

 Asterina gibbosa, much larger than those found at Port 

 Erin. Trochus zizyphinus is also common here at low tide. 



Compound Ascidians are particularly abundant and 

 large. The following species were collected : — 



Botryllus violaceus, Botryllus schlosseri, Botryllus 

 pruinosus, Botrylloides rubrum, Botrylloides albicans. 



Distoma rubrum. 



Amaroucium p>roliferum„ 



Leptoclinuin maculosum, Leptoclinum asperum. 



Diplosoma gelatinosum. 



Some projecting masses of hard clay which occur on one 

 part of this shore, are penetrated in all directions by the 

 burrows of Pholas crispata, and those of a small Annelid. 

 Under the stones in the more muddy parts, Cirratulus 

 boi'ealis is common ; while in the cleaner regions and in 

 the rock-pools. Nereis pelagica and Harmothoe imbricata are 

 found. Amongst the other species obtained on this shore, 

 were : — Halisarca duj(trdmii, Leucandra nivea, Amorphina 

 panicea^ Anemonia sulcata^ Bunodes gemmaceus, Polyno'e 

 jioccosa, and Galathea squamifera. 



The most prolific dredging ground in the neighbourhood 

 of Port Erin was found to be in front of Bay Fine and the 

 Halfway rock, between the breakwater and the Calf. Here, 



