106 GLOSSARY. 
G. 
gagates, jet. 
Gasteropoda. A Class of univalve mollusks, the lower 
surface of whose belly forms the foot. 
génus. In natural history a subdivision of an Order. A 
genus is subdivided into species. (See Appendix A.) 
Geomdlcus, an earth mollusk; the name of a genus. 
gibbosa, swollen. 
gibbous, protuberant. 
glaber, smooth. 
glutinosa, sticky, slimy. 
gracilior, rather slender. 
granulated, with small markings like grains. 
gregarious, living in flocks. 
ET, 
habitat, dwelling place. 
haliotidea, ear-shaped; from Haliotis, or “ Venus’ ear.” 
Helicide. A Family of mollusks. 
Héliz, a screw, coil; the name of a genus. 
Hélmit, named after Helm. 
Henslowana, named after Prof. Henslow. 
herbworous, feeding on vegetable matter. 
hispid, hairy. 
horténsis, inhabiting gardens. 
hyaline, glassy. 
hybrida, a cross between two species. 
hypnorum, living among the moss Hypnum. 
ve 
inconspicua, not easily observed, 
; 
incrassadta, thickened, coarse. 
