278 



GLOSSARY. 



differing in size or shape from 

 the other, as in the oyster or 

 Bracliiopod shells. 

 Ir'eo-ra-tbd. Freckled ; sprin- 

 kled with atoms. 



Lamb-doi'dal. Referring to the 

 lamhdoidal or>i-shaped suture, 

 with the apex upward, in a 

 mammal's skull. 



Lam-bl-libran'chi ATA (Lat. 

 lamella, a leaf or sheet ; bran- 

 chia, gill). A class of mollusks 

 with large leaf-like gills. 



Lar'ta (Lat. larva, a mask). 

 The second stage of the insect, 

 a caterpillar, grub, or mag- 

 got. 



Lxim'bar (Lat. lumbus, a loin). 

 Connected with the loins. 



Ltj'mbk. The cavity of an organ. 



Ma-li'pe-des. The fourth and 

 fifth pairs of head-appendages 

 of chilopod Myrinpods. 



Mb-dul'la (marrow). The spinal 

 cord of vertebrates. 



Men'tum (chin). The basal 

 piece or sclerite of the labium 

 or second maxillae of insects. 

 Submentum is the posterior 

 division of the mentum. 



Mes-en'tb-eon. The mid-gut or 

 stomach. 



Mes'en-tb-et (Gr. mesos, inter- 

 mediate ; enteron, intestine). 

 The membrane between the in- 

 testine and abdominal walls. 



Me'-so-blast. The primitive, 

 embryonic mesoderm. 



Me-tag'e-nb-sis. Alternation of 

 generations. 



Me'-ta-merb. The same as som- 

 ite or arihromere. 



Mon-ce'ci-ous (Gr. monog, single, 

 oikos, house). With the sexual 

 glands, etc., united in the same 

 individual. 



Mt'-o-blabt. The embryonic 

 cells which become muscle 

 cells. 



Mtr-i-op'o-da (Gr. murioB, thou- 

 sand ; pous, podos, foot). The 

 class of tracheates comprising 

 the Millepedes and Centipedes. 



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

 thread ; kustis, a bladder). 

 The nettling, stinging organs 

 or thread-cells or lasso-cells of 

 the jelly-flshes and polyps, 

 etc. 



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

 ney). The segmental organs 

 of worms, etc. 



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

 nerve; pteron, wing). The 

 order of net-veined insects with 

 a complete metamorphosis. 



Nid-a-mbn'tal. Referring to a 

 nest, or egg-sac. 



No'to CORD (Gr. noton, back ; 

 clwrde, a string), or chorda 

 dorsalis. The 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, odous, teeth) 

 The dragon flies. 



0-don'to-phorb (Gr. odous, a 

 tooth ; pJiero, I carry). The 

 so-called tongus or lingual 

 ribbon of the higher moN 

 lusks. 



