348 



GL08SABT. 



differing in size or sliape from l 

 tlie otlier, as iu tlie oyster or 

 Bracbiopod sliells. 

 Ir'ko-ra-ted. Freclvled ; sprin- 

 liled with atonis. 



Lamb doi'dal. Referring to the 

 lanilidoidul or ^i-sliaped suture, 

 with tlie apex upward, iu a 

 mammal's skull. 



LaM-EL-LI BKANCHI A TA (Lat. 



lamella, a leaf or sheet ; briin- 

 c/iia, gill). A class of mollusks 

 witli large leaf-lilie gills. 



Lar'va (Lat. lana, a mask). 

 The second stage of the insect, 

 a caterpillar, gruh, or mag- 

 got. 



Lum'bar (Lat. Iwmbus, a loin). 

 Connected with the loius. 



Lu'iMEN. The cavity of an organ. 



Ma-lipe DES. The fourth and 

 tiftlj pairs of head-appendages 

 of chilopod Myriopods. 



Mb-dul'la (marrow). The .spinal 

 cord of vertebrates. 



Men'tum (eliin). The basal 

 piece or sclerite of the labium 

 or second maxilloe of insects. 

 Submentum is the posterior 

 division of the meutum. 



Mes-en'te-ron. The mid-gut or 

 stomach. 



Mes'en TERY (Gr. onesos, inter- 

 mediate ; enteron, intestine). 

 The membrane between the in- 

 testine and abdominal walls. 



Mb'so-blast. The primitive, 

 embryonic mesoderm. 



Me-tag'e NE-STS. Alternation of 

 generations. 



Me'ta-mere. The same as som- 

 ite or urthromere. 



Mon-ce'ci-ods (Gr. monos, single; 

 oilcoH, house). With the sexual 

 glands, etc., united iu the same 

 individual. 



Mt'o-blast. The embryonic 

 cells wliich become muscle 

 cells. 



Myr-i-op'o-da (Gr. murios, thou- 

 sand ; pons, podos, foot). Tlie 

 class of tracbeates comprising 

 the IMillcpedcsand Centipedes. 



Ne-mat'o CYST (Gr. nema, a 

 thread ; ku.ttis, a bladder). 

 The nettling, stinging organs 

 or tliread-cells or lasso-cells of 

 the jelly-lrshes and polyps, 

 etc. 



Ne-piirid'i a (Gr. nephros, kid- 

 ney). The segmental organs 

 of worms, etc. 



Neu-rop'te-ra (Gr. neuron, 

 nerve; jUeron, wing). The 

 order of net-veined insects with 

 a complete metamorphosis. 



Nid-a-men'tal. Ileferring to £ 

 nest, or egg-sac. 



No'to cor]> (Gr. noton, back ; 

 cliorde, a siring), or chorda 

 dorsalis. Tlie primitive sup- 

 port of the body of vertebrate 

 embryos, larval ascidians, and 

 the backbone of the lancelet 

 and lampreys. 



Ob'tec-ted. Covered ; con- 

 cealed. 



O'do-na-ta (Gr. »dous, teeth). 

 The dragon flies. 



O-noN'TO-ruoRE ( Gr. odoii.i, a 

 tooth ; phero, I carry). The 

 .so-called tongue or lingual 

 ribbou of the higher mol- 

 lusks, and related parts. 



