FROM THE EDDYSTONE GROUNDS TO STAllT POINT. 425 



except perhaps 89B. The following species of foraminifera occur in 103 

 VI. and VII., arranged in ord'er of hiHinency. — TrimcatuIina lobatula, 

 Rotalia heccarii, Textularia gramen, MilioUna scminulum, Bulimina 

 pupoidcs, Discorhina rosacea, Lagena orhignyana, Bolivina dilatata, 

 Polymorphina lactea, MilioUna irigonula, Textularia agglutinans, 

 Spirillina vivipara, Glohigerina hulloides. In all, fourteen species — the 

 largest number of distinct species found in any of the samples. — 

 R H. W.] 



Shells are numerous. For list see p. 42G. 



It is possible that the accumulation of silt at this place may be due 

 to its being somewhat sheltered from the south-westerly swells by the 

 Eddy stone reef, which runs out in a southerly direction. Rocky ground 

 was found due south of the lighthouse, at a distance of one mile (hauls 

 31 and 78. See Chart I.). 



Fauna. The fauna has many points in common with that of the 

 gravel and fine sand grounds to the west of the Eddystone {e.g., 

 Ground IX.). Chactopterus, for instance, is very plentiful and with 

 it Halecium Jialccinum and Flwnularia Catharina. Ophiothrix fragilis 

 is also very abundant, and the Echinoderm and Crustacean faunas 

 are similar to those of Ground IX. There are, however, some marked 

 points of difference between the two grounds. Pecten opercularis, 

 which was plentiful on Ground IX., is scarce on XIII., and with 

 it Asterias ruhens and A. glacialis are scarce. Many full-sized speci- 

 mens of Atelecyclus heterodon were taken on Ground XIII., which 

 may be regarded as a centre of distribution for this species, whilst on 

 Ground IX. the specimens, though numerous, were all small.^' On the 

 other hand, TurriteUa communis, of which living specimens were 

 numerous on IX , was not taken on XIII., and Polycarpa varians, the 

 abundance of which was one of the features of IX., was represented by 

 a few small specimens only in XIII. TTycdinoecia tuhicola, as on 

 Ground IX., was plentiful. 



Species typical of the fine sand grounds were absent or represented 

 only by stray specimens. 



The presence of several fair-sized pieces of Alcyonium digitatum, of 

 vrhich only very small colonies were taken growing on P. opercularis on 

 Ground IX., is noteworthy, and, like the large quantity of silt in the 

 bottom-deposit, may be due to the more sheltered position of the 

 ground. {Cf. p. 376.) The masses of Filogmna implexa also were much 

 larger here than on any other ground examined. 



* Haul 93 (Ground IX.) wa.s made on March 3rd, 1898, and haul 103 (Ground XIII.) on 

 May 26tli, 1898. The diirerence in size between the .specimens on tlie two gioiui<ls was 

 prohably greater than would he accounted for hy growth lietwcon tlic two dates, tliougli in 

 tlie absence of direct eviilencc tlie j>oiiit is somewiiat uncertain. 



