440 ON THE FAUNA AND BOTTOM-DEPOSITS NEAR THE 30-FM. LINE 



Eunoc nodosa. One in 45. 

 Evarne inipar. One in 29. 

 Chaetopterus variopedatus. One or two 



in 45 and 63 only. 

 Pectinaria auricoma. Occasional specimens 



only. 

 Serpnla vermiculaiis. Recorded in 3 only. 

 Hydroides pectinata. Few only. 



Crustacea. 



Eupagurns Bernhardus. Scarce. In haul 

 45 and 63 only. 



Anapagnrus laevis. In 3, 4, and 29 only. 



Porcellana longicornis. Common. 



Galathea dispersa. Common. 



Steuorhyuclms longirostris. One or two 



in haul 3 only. 

 Inachus dorsettensis. One or two in hauls 



4 and 45 only. 



Hyas coarctatus. Frequent. 

 Eurynome aspera. Many in 4. Occasional 

 in other hauls. 



rihunnus hirtellu.s. One in haul 3 only. 



Portunus pusillus. In 4 and 45 only. 



Atelecyclus heterodon. One or two in 45 

 only. 



Ebalia tumefacta. ) _ . , 



, , f Occasional specimens 



" tuberosa. ^^^^^ 



,, Cranchii. ) 



Ampelisca spinipes. 

 Melita obtusata. In 29. 

 Pyrgoma anglicum. Associated with 

 Caryophyllia Smithii. 



MOLLITSCA. 



Pholas parva. 



Living. 

 One specimen in 

 rock. Haul 4. 



Pholadidca 



jjapyracea. 

 rock. 



Trias 



Trias 



Many in 

 Haul 4. 



Saxicava arctica. One or two in 29 only. 



Tapes virginea. One small one in 29. 



Venus fasciata. In haul 45 only. 



Kellia suborbicularis. In haul 30 only. 



Modiola, s^J. Small, in 30. 



Area tetragona. Occasional small speci- 

 mens. 



Pectunculus glycimeris. One small one 

 in haul 29. 



Pecten tigiinus. One in haul 4. 



,, maximus. One small one in haul 4. 



,, opercularis. A few in haul 4 only. 

 Chiton asellus. Common. 



,, discrepans. Two in haul 4 only. 



Emarginula reticulata. Frequent. 



Trochus zizyphinus. Occasional small 

 specimens. 



Nassa incrassata. In 45 only. 



Buccinura undatum. In 45 only. 



Ovula patula. In haul 4. 



Doto coronata. In 29 only. 

 Polycera quadrilineata. In 3 only. 

 Coryphella Landsburgii. In 30 only. 



Shells. 



Lutraria elliptica. In 4 only. 



Tapes virginea. In 45 only. 



Venus fasciata. In 45 only. 



Cardium norvegicum. In 45 only. 



Pectunculus glycimeris. In 45 and 63 

 only. 



Lima Loscombii. In 4 only. 



Pecten tigrinus. In 45 only. 



,, opercularis. A few generally present. 



Murex erinaceus. In 45 only. 



Fusus islandicus. In 45 only. 



POLYZOA. 

 Cellaria sinuosa. -, 



,, fistulosa. [in 29 only, a 



Scrupocellaria scruposa. j little. 

 Bicellaria ciliata. ^ 



Bugula turbinata. In 4 and 66. 



Incrusting forms numerous. See Table 

 VI., p. 534. 



TUNICATA. 



Ciona intestinalis. In 63 only. 

 Ascidia depressa. In 29 only. 



Section VI. 



THE DISTRIBUTION OF PARTICULAR SPECIES ON THE 

 GROUNDS UNDER INVESTIGATION. 



In this section the distribution of the individual species of the more 

 important groups on the grounds from the Eddystone to Start is 

 discussed, and the relation of this distribution to changes in the nature 

 of the bottom-deposit pointed out. Notes are also given on some 

 habits of the species which appear likely to influence their distribution. 



