262 BUSH 



E. Setae haying the blade regularly tapered. 



Romanchella Caullery and Mesnil 1897. 



Tube sinistral. 



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



perrieriC. & M. (16). abnormis sp. nov. 



argutus Bush. 



Tube dextral. 



Spirorbis foramtnosus 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.) 

 borealis Daudin 1800 + Morch 1863 -f Malmgren 1867+ Levinsen 

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

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

 figures). 

 nautiloides Lamarck 1818 -f Willemoes Suhm 1871 (embryology ; 



figures). 



spirillum Agassiz 1 866 (embryology ; figures) non Linne". 

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

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

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

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

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



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

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

 Fabricius 1 780 non Miiller). 



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

 pl. xxvn, fig. 8; pi. xxxiu, fig. 15; pi. xxxix, figs. 21-23, 28 ; rf. 

 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 (Bucctnum, 

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

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

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

 on bryozoans (Salic ornaria, etc.). 



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

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

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

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

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



