6 J he Scottish Naturalist. 



Algae. The Rev. A. M. Norman, in papers on the Clyde 

 Mollusca in the Zoologist 1 85 7-60, records many Arran species* 

 and Prof. W. A. Herdman, in the. Proceedings of the Royal Physical 

 Society of Edinburgh, has made extensive additions to the records 

 of invertebrate animals. Perhaps, the most complete list, how- 

 ever, is that of Dr. Miles, in Bryce's " Geology of Arran and 

 Clydesdale" (fourth ed. 1872), and in this the work of previous 

 observers is also taken into account. 



The remainder of the afternoon was spent in reconnoitring the 

 village, and preparing for the following day's work ; but in the 

 evening we steamed across the bay towards the middle of the 

 Holy Isle, and had a haul of the dredge in about twenty fathoms 

 of water. When the contents had been spread out, many interest- 

 ing forms quite unknown in our east coast experience lay before 

 us. Among the shelly debris were many writhing Ophiuroids, and 

 a few specimens of the curious Crinoid — Comatula rosacea. Sea 

 urchins were also present, as the large Echinus esculentus, and its 

 smaller purple-tipped relative E. miliaris ; while here and there 

 were various star-fishes, despairingly throwing out their worm-like 

 tube feet. Of this last class there were many examples of the 

 pretty scarlet Porania pulvillus, a good deal of whose sleek and 

 rounded outline, is due to the presence of water, as we found that 

 gentle pressure forced it out in fine jets, leaving poor Porania in 

 a depressed and dejected looking state. The Crustacea were also 

 represented by straggling spider crabs, as Inachus dorsettensis, and 

 Stenorhynchus phalangium, while ordinary crabs scuttled away in 

 all directions ; but there were also a few more unusual forms, 

 especially the rough backed Eurynonic aspera, which appears tc be 

 not unfrequent in the bay, as we dredged a good many specimens, 

 subsequently, and also two species of Edalia, — E. tuberosa, and E. 

 twnefacta — the latter bearing on its carapace a somewhat fanciful 

 resemblance to a human face. The Mollusca were well re- 

 presented, one of the most interesting being Trochus millegranus r 

 which was afterwards found abundantly, along with T. magus. t and 

 T. tumidus, also Pecten tigrinus, and the var. coslata, Aporrhais pes- 

 pelecani, and Scaphander lignarius. We were reluctantly forced 

 to cease work for the day, and by the time we had reached our 

 anchorage, darkness was setting in, and the village was indicated 

 only by a row of lights, while the rugged peaks of Goatfell were no 

 longer visible. The sea lay before us smooth as glass, and the 



