106 GLOSSARY. 



G. 



gagdtes, jet. 



Gasteropoda. A Class of univalve mollusks, the lower 



surface of whose belly forms the foot. 

 genus. 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. 

 gldber, smooth. 

 glutinosa, sticky, slimy. 

 gracilior, rather slender.- 

 granulated, with small markings like grains. 

 gregarious, living in flocks. 



H. 



habitat, dwelling place. 



hdliotidea, ear-shaped; from Haliotis, or "Venus' ear." 



Helicidce. A Family of mollusks. 



Helix, a screw, coil ; the name of a genus. 



Helmii, named after Helm. 



Henslowdna, named after Prof. Henslow. 



herbivorous, feeding on vegetable matter. 



hispid, hairy. 



hortensis, inhabiting gardens. 



hyaline, glassy. 



hybrida, a cross between two species. 



hypnorum, living among the moss Hypnum. 



I. 



inconspicua, not easily observed. 

 incrassdta, thickened, coarse. 



