244 REPORT—1850. 
Arcturus, sp., Hebrides, 15 m. 
Pycrogonum, large species, Zetlands, 50 gr. 
Cypridina MacAndret, Hebrides, 70 ἢ. 
Brenda, Zetland, 80 f. 
Cirripedes. 
Until Mr. Darwin's researches on the Cirripedes be published, there can 
be no certainty in the determination of the species of this difficult group. 
The leading forins, however, are usually noted in the dredging papers. 
Balanus scoticus, Anglesey, 25 gr. Isle of Man, 25sh. Clyde, 15 gr. 
Balanus sulcatus, Dorset, 7 w., 19. Cornwall, 28 sh. Milford, 8 w. 
Anglesey, 93, 12 gr. Isle of Man, 18 n.,28sh. Clyde District, 
15 gr., 30 gr., 20sh. Zetlands, 25 st. Hebrides, 10 8. m., 15-20 
st., 15 sh., 25 gr. s., 30, 35 gr., 90 st. Outer Hebrides, 18 s. δ᾽.» 
15-20 gr. ξ ᾿ 
Clitia verruca, Dorset, 15-20 gr. Devon, 7-12 5. gr. Anglesey, 30 
gr. Isle of Man, 25 st. Hebrides, 15 w., 15-20 w. gr., 25 gr. 8.5. 
90 gr. s. Zetlands, 50 gr. 
Adna anglica, Cornwall, 12 gr., 25 sh. 5. 
Scalpellum vulgare, Derset, 15-20 gr. Cornwall, 27. Devon, 20-25. 
Isle of Man, 25 sh. 
Annelida. 
This department of the British Fauna is the one requiring most elucidation. 
The researches of Dr. Johnston have done much, and those of Dr. Williams 
promise much; but until we have some available manual of species, the pro- 
gress will not be sufficient to bring it up to a level with the other sections of 
British marine zoology. The entries of worms in the dredging papers are, 
except for the more striking species, only occasional. 
Michelia trilineata, Clyde dist. 20 st. Hebrides, 25 gr. n. 
Planaria rosea, Anglesey, 12 gr. Zetland, 60 s., 80 m. 5. 
——-, sp., Dorset, 12 m. 
Pontobdella muricata, Isle of Man, 28 sh. 
Trophonia Goodsiri, Zetlands, 7 w. 
Pectinaria belgica, Anglesey, 7 w. ~ Clyde, 30 gr., 50 m. Hebrides, 
90 gr.s. Stornoway, 18 5. ἢ. Zetland, 50 gr., 80 m. s., 80 5. 
(large species), Hebrides, 15 m. 
Sabellaria alveolata, Anglesey, 12 s., 14 gr.,25, 30. Hebrides, 8 s. 
Clyde district, 15, 20 sh. 
Terebella conchilega, Cornwall, 20-25 sh. Devon, 20-25 5. Hebrides, ‘ 
15 w. Zetlands, 50 gr. 
60 s., 80 m. 8. 
(convoluted sp.), Hebrides, 12-14 st. m. 
Pomatoceros tricuspis, Dorset, 7 w., 15-20 gr. Devon, 20-25 s., 27 — 
s. Anglesey, 12 st. 14 8. 20 gr. 25 gr. Isle of Man, 28 sh. 
Clyde district, 5-10 n., 20 sh. Hebrides, 15 w., 25 8. gr. 18 ny 
30-40 sh., 90 gr. Zetland, 50 gr., 60 gr., 70 8, 
Eupomatus, sp., Dorset, 7 w., 15-20 gr. Cornwall, 27. Devon, 25-27. 
Clyde district, 30 gr., 20 sh. Hebrides, 15 w., 15-20 8., 25 gr. Sy 
90 gr. Zetlands, 50 gr., 60 5.» 70 5. 
Serpula vermicularia, and tubularia, Dorset, 15-20 gr. Anglesey, 25 
gr.,12s. Isle of-Man,25 sh. Clyde district, 5-10 n., 18 m., 20 
st. 30 gr. Hebrides, 30-40 sh., 28 5.7 15 m., 18 ἢ. 90 gr. Zet- 
lands, 50 gr. 
Spirorbis, Dorset, 15-20 gr. &e. 
compressa, Cornwall, 20-25. Devon, 20-258. Zetlands, 50 gr. ὁ 
