CONCHOLOGY. . 29 
twisted, in clusters, and affixed to other substances. Inhabits tho 
coast of Britain. ‘Twenty-six species. 
Serpula vermicularis. Serpula filaria. 
S. fascicularis. S. pellucida. 
S. intestina. S. intorta. 
S. contortuplicata. S. cristata. 
S. plicaria. S. spirulea. 
S. glomerata. S. quadrangularis. 
S. decussata. S. minima. 
S. protensa. S. echinata. 
S. infundibula. S. sulcata. 
S. annulata. S. costalis. 
S. cereola. S. dentifera. 
S. filograna. S. sipho. 
S. vermicella. S. arenaria. 
3. Genus Vermilia. Pl. V. 
Animal. Body tubicular, elongated and attenuated towards the 
posterior part, and provided superiorly with a simple testaceous 
orbicular operculum. \ 
Shell. A testaceous cylindrical tube, narrowed in the rear, 
twisted, and adhering by the side to marine substances, aperture 
round, the margin armed with from one to three teeth. Inhabits 
the British coast. Nine species. 
Vermilia rostrata. Vermilia subcrenata. 
V. triquetra. V. plicifera. 
V. bicarinata. V. scabra. 
V. eruca. V. teniata. 
V. plicata. 
4. Genus Galeolaria. PI. V. 
Animal. Distinguished from the vermilia by a very peculiar, 
operculum. 
Shell. In groups, testaceous, cylindrical, subangular, wavy, 
adhering by the base, and open at the summit; aperture orbicular, 
terminated on the side by a spatular tongue ; operculum orbicular, 
3* 
