300 L. K. CRAWS HAY. 



Plymouth area, extending as far as the Eddystone Grounds. A few 

 specimens only were obtained by Dr. Allen, on fine sand, between the 

 Eddystone and Start Point. 



Corystes cassivelaunus appears to be exclusively associated with 

 deposits of a fine nature, and such as were only met with on the first 

 position at about 8 miles. 



With these few species may also be considered certain of those 

 mentioned under the preceding heading, the infrequency of which 

 almost amounts to their absence from the outer fauna. Such are 

 Siiberites carnosus, Hydractinia echinata, Tzihularia sji., Thuiaria 

 articulata, Hcdosydna gelatinosa, Ccqmlus Iningaricus, and especially 

 Fortunus depuraior and Cardium cchinaturn. 



(3) Of the species hitherto unrecorded from the Plymouth area, 

 Clathrina primordicdis, as regarded by Haeckel (14), is of almost 

 universal distribution. The remainder are divided as follows, the 

 present records for the English Channel being included in the 

 distribution : — 



(A) From Scandinavia through the region of the Shetland Is. and 

 Hebrides to Irish Waters and English Channel. 



Serhdarella tcnclla. (Including also Arctic regions, S.W. Atlantic, 

 and Pacific.) 



Fectinaria imsilla. (Scandinavia and West of Scotland only.) 



Thyone rajjhanus. (Excluding Scandinavia.) 



Tritonofusus propitiquus. (Including North Sea.) 



Anajjagurus hyndmani. (Excluding Scandinavia, and including 

 Channel Is.) 



Gohius scorpioides. (Excluding Shetlands and Hebrides.) 



(B) The same area, and including the Mediterranean. 

 Fdtogastcr sulcatns. (Excluding Shetlands, Hebrides, and Ireland, 



and including Brazil and Pacific.) 



Gonotliyrca gracilis. (Including North Sea and S. America.) 



(C) The same as (A), including the Bay of Biscay and Azores. 

 Ditrupa arietina. (Including Mediterranean, Canary Is., and 



Pacific.) 



Inaxhus leptochincs. (Excluding Scandinavia and Irish Waters, and 

 including Channel Is., Adriatic, and Cape Verde Is.) 



Diphasia alata. (Excluding Irish Waters.) 



Folyplumaria flabellcda. (Excluding Shetlands, Hebrides, and Irish 

 Waters.) 



Fortunus tuhcrcidatus. (Excluding Scandinavia and Irish Waters, 

 and including Mediterranean.) 



