OF THE DAYS BETWEEN THE START AND EXMOUTH. 553 



THE "CORNER." 



This ground was characterised by the large quantity of hydroids 

 which were present, notably Ohelia longissinuc, Campanularia vcrticillata, 

 Halcciiim lialecinum, Scrtularella polyzonias, Sertularia ahietina, 

 Hydralhnania falcata, and Antennularia antcnnina. Atclccyclus 

 heterodon was also present in moderate numbers. Several of the 

 smaller Crustacea were taken, Hyas coarctatios, Galathea dis2Jcrsa, 

 Crangoii vuhjaris, and C. spinosus, due possibly to the hydroids filling 

 up the meshes of the trawl. 



Tiirritella communis, which was common, especially in the muddy 

 part of the ground, generally had hydroids attached to the shell. 

 A large species of Botryllus, the " pork " of the Plymouth trawlers, was 

 not uncommon. 



Soil, mud, fine sand, and coarse sand ; depth, 30 fathoms. 



List of Species. 



PORIFERA. 



Suberites domuncula. Occasional. 



HYDROZOA. 



Hydractinia echinata. Occasional. Sertularia ahietina. Connnon. 



Obelia longissima. Common. Hydrallmania falcatii. Very common. 



Campanularia verticillata. Common. Antennularia antennina. Common. 



Lafoea dumosa. Occasional. „ ramosum. Not uncommon. 



Halecium haleciuum. Common. Aglaophenia myriopliyllum. Not un- 



Sertularella Gayi. Not uncommon. ' common. 



„ polyzonias. Common. t 



ACTINOZOA. 



Alcyonium digitatum. Occasional. 

 Sagartia parasitica. Common. 

 Adamsia palliata. Not uncommon. 



ECHINODERMA 



Astrojiecten irregularis. Not uncom- 

 mon. 

 Asterias rubens. Common ; small. 

 „ glacialis. Two taken. 



Opliiotlirix fragilis. Not uncommon. 

 Echinus miliaris. Not uncommon. 

 Spatangus purpureus. Fragment only. 



GEPHYREA. 

 Phascolion strombi. One. 



Aphrodite aculeata. Not common, 

 Gattyana cirrosa (P«Zi.). One. 

 Acholoe astericola. Two. 



POLYCHiETA. 



Cheetopterus variopedatus. Occasional. 

 Sabellaria spinulosa. Occasional. 

 Sabella pavonina. Occasional. 



