GLOSSARY. 637 



comprising those formations in -whioh the organic remains approximate 



more or less closely to the existing fauna and flora. 

 Kee'a-tode (Gr. heras, horn ; eidos, form). The homy substance of ■which 



the skeleton of many sponges is made up. 

 Kee-a.^o'sa. The division of Sponges in whioh the skeleton is composed 



of keratode. 



La^ei-um (Lat. for lip). Eestricted to the lower lip of Articulate animals. 

 La'bbhm (Lat. for lip). Eestricted to the upper lip of Articulate animals. 

 Lab-t-einth-o-bon'ti-a (Gr. labwinthoe, a labyrinth; odom, tooth). An 



extinct order of AmpTiibia, so called from the complex microscopic structure 



of the teeth. 

 Lac-ee-til'i-a (Lat. lacerfa, a lizard). An order of Bqatilia comprising the 



Lizards and Slow-worms. 

 L^-MO-Dip'o-DA (Gr. laimoe, throat ; die, twice ; podes, feet). An order of 



Crustacea, so called because they have two feet placed far forward, as it 



were under the throat. 

 La-mel-li-beanoh-i-a'ta (Lat. lamella, a plate; Gr. bragehia, gills). The 



class of Mollusea, comprising the ordinary bivalves, characterized by the 



possession of lamellar gUls. 

 La-mel-li-eos'tees (Lat. lamella, a plate ; rostrum, beak). The flat-billed 



Swimming Birds {Natatores), such as Ducks, Geese, Swans, etc. 

 Lae'va (Lat. for a mask). The insect in its first stage after its emergence 



from the egg, when it is usually very different from the adult. 

 Lae'tnx. The upper part of the windpipe, forming a cavity with appropriate 



muscles and cartilages, situated beneath the hyoid bone, and concerned in 



Mammals in the production of vocal sounds. 

 Len-tio'ij-lae (Lat. lens, a bean). Shaped like a biconvex lens. 

 Lep-i-dop'tb-ea (Gr. lepis, a scale ; pteron, a wing). An order of Insects, 



comprising Butterflies and Moths, characterized by possessing four wings 



which are usually covered with minute scales. 

 Lep-i-do'ta (Gr. tepidotos, covered with scales). Tormerly applied to the 



order Dipnoi, containing the Mud-fishes (Zepidosireii). 

 Lbp-to-oae'di-a (Gr. lq>tos, slender, small; hardia, heart). The name given 



by Muller to the order ot Fishes comprising the Lancelot, now called Pha- 



Lis-A-MEu 'ttjm nu'ch.* (Fr. nmqiie, the nape of the neck).- The band of elastic 



fibres by which the weight of the head in Mammalia is supported. 

 LiN'enAL (Lat. lingua, the tongue). Connected with the tongue. 

 Liif'au-LA (Lat. liTigula, a little tongue). The upper flexible portion of the 



labium or lower hp in Insects. 

 Lis-sen-ceph'a-la (Gr. lissos, smooth ; egkepjialos, brain). A primary dirision 



of Mammalia, according to Owen, in which the cerebral hemispheres are 



smooth or have few convolutions. 

 Lith'o-otsts (Gr. lUho8,a, stone ; hustis,a cyst). The sense-organs or " mar- 

 ginal bodies " of the iMcernanda or SteganophtTtalmate Medusae. 

 LoN-Gi-PEN-ifA'T^ (Lat. longus, long ; penna, wing). A group of the Natar- 



torial Birds. 

 Lon-gi-eos'tkes (Lat. longus; rostrum, beak). A group of-the Wading Birds. 

 Loph'-o-phoee (Gr. lopTws, a crest ; and phero, I carry). The disc or stage 



upon which the tentacles of the Pohjzoa are borne. 

 LopH-n-EOp'oDA (Gr. lopTiouros, havmg stiff hairs; and podes, feet). An 



order of Crustacea. 

 Lo-Ei'oA (Lat. for a breast-plate). Applied to the protecttve case with which 



certain Infusoria are provided. 

 Loe-i-ca'ta (Lat. lorica. a cuirass). The division of Eeptiles comprising the 



Chdonia and CrocodMa, in which bony plates are developed in the skin 



(derma). 

 Ld-cee-kae'i-da (Lat. luoerna, a lamp). An order of the Mydrozoa. 

 Lum'bae (Lat. himbus, loin). Connected with tjie loivis. 

 Ln'NATE (Lat. hina, moon). Crescentic in shape. 



