REPORT UPON THE ECHINODERMATA. 137 



It was obtained during the cruise of the " Hyaena " near 

 Puffin Island, on May 24th ; and was taken frequently in the 

 neighbourhood of Port Erin and Port St. Mary, at the south 

 end of the Isle of Man, last summer. The largest specimens 

 measure from 1 cm, to 1*5 cm. in diameter (exclusive of 

 spines). It was also obtained in the neighbourhood of 

 Penmaenmawr in July. 



Order H.— CLYPEASTRIDA. 

 Family. — Euclypeastrid^. 



Echinocyamus pusillus, Gray. 



This little species is not uncommon in this locality. 

 Byerley records having taken several specimens by dredging ; 

 and Forbes {Brit. Assoc. Rep.) has found it both at the 

 Isle of Man and also on the North Wales coast. It was 

 obtained by the Marine Biology Committee, at the follow- 

 ing places in the district during last year's investigations : — 

 (1.) During the cruise of the " Hyaena," on May 23rd, off 

 the Great Ormes Head, depth seven to eight fathoms. (2.) 

 Off the south end of the Isle of Man, near Port Erin, ten to 

 twenty fathoms, and off Spanish Head, fifteen fathoms, 

 bottom Nullipores. (3.) At Hilbre Island, at low tide, on 

 June 13th, 1885. 



Some dead tests of this species were found worked into 

 the sandy investments of Molgula occulta, dredged off Port 

 Erin, Isle of Man. 



Order III.— PETALOSTICHA. 



Family — Spatangid^. 



Spatangus purpureus, Miiller. 

 Forbes {Brit. Star Fishes, p. 182) records this species as 

 being abundant on the scallop-banks, off the Isle of Man. He 

 has also found it off the coast of North Wales, at a depth of 



