262 BUSH 



E. Setae having the blade regularly tapered. 



Ro7nanchella Caullery and Mesnil 1897. 



Tube sinistral. 



Sfirorbis validtis Verrill (17). Sj>trorbts asperatus sp. nov. 



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



argutus Bush. 



Tube dextral. 



Spirorbts 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, + Cuvier (figures). (See pp. 236 and 258.) 



borea/is Daudin i8oo + M6rch 1863 + Malmgren 1867+ Levinsen 

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

 Mesnil 1897 (18; figures) + ? Schively 1897 (embryology; 

 figures). 



nautiloides Lamarck 1818 + Willemoes Suhm 1871 (embryology; 

 figures). 



spirilban Agassiz 1 866 (embryology ; figures) non Linne. 



p1. XXXIX, fig. 34; p1. XL, figs. 5, 6, 8, 12-15 ; p1. xlii, figs. 15-19. 

 Northern waters, on stones and rock-weed (Fucits) ; 1 on other hosts. 



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

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

 Mesnil 1897 (4) + Moore 1902. (See p. 243.) 



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

 -f- Saint-Joseph 1894 ; vdiXitty grofihindicus Morch 1863 {porrecta 

 Fabricius 1780 fW7i Miiller). 



borea/is Fewkes 1885 (embryology ; figures) non Daudin 1800. 



p1. XXVII, fig. 8; p1. xxxiii, fig. 15; p1. xxxix, figs, 21-23, 28; p1. 

 XL, fig. 7 ; p1. xlii, figs. 1-5 ; p1. 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 {^Biicciftutn, 

 Sipho, etc.), on algai {Laininaria, etc.), on bryozoans {Cflhi/aria, Crista, 

 Gemellaria, Bugula, etc.), on hydroids {Obclia, Salacia, Eudendrium, 

 Seriularia, Thuiaria, etc.), and on worm tubes {Nothria, etc.) ; England, 

 on bryozoans {Salicornaria, etc.). 

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

 1883, in part (tab. in, f. 9 not 10), non P'abricius 1780 -f Mon- 

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

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

 p1. XL, fig. 24 ; p1. xliii, fig. 32. 



