chap, iv ] THE CRUISES OF THE ' PORCUPINE: 1 7 1 



ilemingu group, but distinguished from K flemmgii 

 by characters which I must regard as of specific 

 value Echinus microstoma, Wyville Thomson, was 

 common and of large size ; and along with it many 

 very beautiful brightly-coloured examples of the 

 smallest form of R norvegicus. _ 



The three species of the Echinothundae, Calvena 

 hystriv C. fenestrate*, and Phormosoma placenta have 

 as yet been met with in this region only, and they 

 seem to have a wide distribution, stretching at about 

 the same depth and temperature from the IW 

 Islands to the south of Spain. I hear from Pro- 

 fessor Alexander Agassiz that Count Pourtales has 

 dredged fragments of one of the species under nearly 

 similar circumstances in the Strait of Florida. 

 Cribrella sanguinolenta was in thousands, of all 

 colours— scarlet, bright orange, and chocolate brown. 

 Several examples were found of a fine Scytaster 

 probably identical with the Asterias canariensts ol 

 D'Orbi-ny, and if so having a southern distribu- 

 tion The curious little Pedlcellaster typicus ot 

 Sars was not uiiirequent ; a form which looks very 

 much like the young of something else. One small 

 specimen of Pteraster milltarls came up from the 

 Holtenia ground, but with the exception of Astro- 

 pecten tenuispinus, which seemed to be more abun- 

 dant than ever, the characteristic arctic echmo- 

 derms were absent. We took no examples here ot 

 Toxopneustes drobachiensis, Tripylus fragihs, Ar- 

 chaster andromeda, Ctenodiscns crlspatus, Astropecten 

 arcticus, Euryale ImJcii, OpUoscolex glaciahs, or 

 Antedon escrichtil It is very likely that there may 

 he colonies in the < warm area' of some or ot all ot 



