CONCHOLOGY. GLOSSARY. 



107 



HIPPO'NYX. From the Greek, ippos, 



a horse, and onux, nail. Name of 



a genus of gasteropods (page 58). 

 HYAL^E'A. From the Greek, ualos, 



glass. A genus of beautiful ptero- 



pods, remarkable for the trans- 



parency and delicacy of the shell 



(page 67). 

 HYDA'TIS. Latin. Formed from the 



Greek, udor, water. Specific name 



of a mollusk. 

 IM'BRICATE. Placed like the tiles of a 



house. 

 INCLU'SA. From the Latin, includo, 



I enclose. Name of a tribe of 



acephalous mollusks. 

 INCURV'ED. When a part is turned 



inwards. 

 INE'QUILATERAL. When the anterior 



and posterior sides make different 



angles with the hinge. 

 INE'QUIVALVE. Where one valve is 



more convex than the other, or dis- 



similar in other respects, as in the 



common oyster. 

 IN'FEROBRANCHIA'TA. From the Lat- 



in, infer us, below, and bronchia, 



gills. Name of an order of gas- 



teropods which have the branchiae 



below the mantle (page 62). 

 INTE'GUMENT. F-rom the Latin, te- 



gere, to cover, the covering, the 



skin. 

 IN'TERGANGLIO'NIC. Applied to 



nerves which are between ganglia. 

 IN'TERNODE. The space between one 



knot or joint and another. 

 INTERRU'PTED. Divided, separated. 



or joint of the spine or back-bone. 

 A division of the animal kingdom, 

 embracing mollusks, insects, and 

 other animals which have no ver- 

 tebrae, or internal bony skeleton. 



INVE'RTEBRATE. Without vertebrae. 



IN'VOUJTE. Having the exterior lip 

 turned inwards at the margin, as 

 in the CyprsBte. 



INVOLUTION. That part which in- 

 volves or inwraps another. 



ISO'CARDIA. From the Greek, isos, 

 like, and kardia, heart. Name of 

 a genus of Chama'cea (page 82). 

 ' of Isocardia. 



JANTHI'NA. From the Greek, ianthon, 

 violet colour. A genus of the 

 family of Trochoides. 



LA'BIAL. From the Latin, labium, 

 lip. Belonging or relating to the 

 lips. 



LACI'NIATE. Jagged, or cut into ir- 

 regular segments. 



LA'CUNOSE. Having the surface 

 covered with pits. 



LAME'LLA. Latin. A little thin plate 

 or piece. 



LAME'LL^E. Plural of lamella. 



LAME'LLIBRA'NCHIATA- From the 

 Latin, lamella, a thin plate, and 

 bronchia, gills. An order of aceph- 

 alous mollusks. 



LAME'LLIBRANCH. Belonging to the 

 lame 'llibra'nchiata. 



LA'MINA. Latin. A plate, or thin 

 piece of metal or bone. 



LA'MINME. Plural of lamina. 



LA'MINATED. Divided into distinct 

 laminae. 



LAPI'LLUS. Latin. A little stone. 



LENTI'CULAR. From the Latin, len- 

 ticula, a little lens, a lentil. 

 Shaped like a lens. 



LI'MA. Latin. A file. Name of a 

 genus of the family of Ostracea. 



LI'MAX. Latin. A slug, a snail. 



LIMA'CES. Plural of Umax. 



LIMB. The margin of bivalve shells. 



LIMN^E'A. From the Greek, limne, a 

 pool. Name of a genus of fresh- 

 water snails. 



LI'NEAR. Composed of lines. 



LI'NEATE. Marked with lines. 



LI'NGULA. Latin. A little tongue. 

 Name of a genus of bivalves (page 

 89). 



LI'NGULA. Plural of Lingula. 



LITHO'DOMUS. From the Greek, 

 lithos, stone, and demo, I build. 

 Name of a genus of bivalves found 

 in rocks and stones, inhabiting 

 cavities which they form for that 

 purpose. 



LITHO'DOMI. Plural of Lithodomus. 



LJ'TTORAL. Belonging to the shore. 



LITTORI'NA. From the Latin, litus, 

 the sea-shore. A genus of the 

 family of Trochoides (page 49). 



LITTO'REUS. Latin. Belonging ox 

 relating to the sea-shore. 



