262 BUSH 



E. Setae having the blade regularly tapered. 



Romanchella Caullery and Mesnil 1897. 



Tube sinistral. 



Spirorbis validus Verrill (17). Spirorbis asperatus sp. nov. 



perrieri C. & M. (16). abnormis sp. nov. 



argutus Bush. 



Tube dextral. 



Spirorbis foraminosus Bush. Spirorbis formosus sp. nov. 



bellulus Bush. 



SPECIES OF SPIRORBIS ARRANGED IN ORDER OF DATE OF 



PUBLICATION. 



An asterisk [*] after the name of a species indicates that specimens are in 

 the Yale University Museum. 

 1760. SPIRORBIS SPIRORBIS* Linne + Fabricius 1780 + Montagu 1803, in 



part, -f Cuvier (figures). (See pp. 236 and 258.) 

 borealis Daudin 1 800 + Morch 1 863 -f- Malmgren 1867-)- Levinsen 

 1883 (figures) + Saint-Joseph 1894 (figures) -f Caullery and 

 Mesnil 1897 (18 ; figures) -f ? Schively 1897 (embryology; 

 figures). 

 nautiloides Lamarck 1818 -j- Willemoes Suhm 1871 (embryology ; 



figures). 



spirillum Agassiz 1866 (embryology ; figures) non Linne*. 

 pi. xxxix, fig. 34; pi. XL, figs. 5, 6, 8, 12-15 ; pi. XLII, figs. 15-19. 

 Northern waters, on stones and rock-weed (Fucus) ; ? on other hosts. 

 1760. S. SPIRILLUM* Linn6 -f Fabricius 1780+ ? Montagu 1803 + ? Morch 

 1863 -f Malmgren 1867 -f Levinsen 1883 (figures) -f- Caullery and 

 Mesnil 1897 (4) -f Moore 1902. (See p. 243.) 



lucidus Montagu 1803 (figures) + Morch 1863 -f Malmgren 1867 

 -f Saint-Joseph 1894 ; variety gronlandicus Morch 1863 (porrecta 

 Fabricius 1780 non Miiller). 



borealis Fewkes 1885 (embryology ; figures) non Daudin 1800. 

 pl. xxvii, fig. 8; pi. xxxni, fig. 15; pi. xxxix, figs. 21-23, 28; pi. 

 XL, fig. 7 ; pl. XLII, figs. 1-5 ; pl. XLIII, figs. 9, 10. 



Northern waters, very common, both Atlantic and Pacific ; from Cape Cod, 

 Massachusetts, coast of New England to Greenland, and from Bering 

 Sea to California, from shallow water to 90 fathoms, on shells {Buccinum, 

 Sipho, etc.), on algae (Laminaria, etc.), on bryozoans (Cellularia, Crisia, 

 Gemellaria, Bugula, etc.), on hydroids (Obelia, Salacia, Eudendrium, 

 Sertularia, Thuiaria, etc.), and on worm tubes (Nothria, etc.) ; England, 

 on bryozoans (Salic ornaria, etc.). 



1767. S. GRANULATUS* Linne* + Morch 1863 -f Malmgren 1 867 + Levinsen 

 1883, in part (tab. in, f. 9 not 10), non Fabricius 1780 + Mon- 

 tagu 1803 + Langerhans 1880 + Saint- Joseph 1894 + Caullery 

 and Mesnil 1897 (25 ; figure) -j- Moore 1902. (See p. 247.) 

 pl. XL, fig. 24 ; pl. XLIII, fig. 32. 



