694 
differing in size or shape from 
the other, as in the oyster or 
Brachiopod shells. 
Ip’RO-RA-TED. Freckled ; sprin- 
kled with atoms. 
LaMB-Dor'DAL. Referring to the 
lambdoidal or V-shaped suture, 
with the apex upward, in a 
mammal’s skull, 
LAM-EL-LI-BRAN'CHI-A-TA (Lat, 
lamella, a leaf or sheet ; bran- 
chia, gill). A class of mollusks 
with large leaf-like gills. 
Lar'va (Lat. larva, a mask), 
The second stage of the insect, 
a caterpillar, grub, or mag- 
got. 
Lum’Bar (Lat. lumbus, a loin). 
Connected with the loins. 
Lu'MEN. The cavity of an organ. 
Ma-ur'Pe-pes. The fourth and 
fifth pairs of head-appendages 
of chilopod Myriopods. 
Me-DUL'LA (marrow). Thespinal — 
cord of vertebrates. 
Men'tum (chin) The 
basal | 
piece or sclerite of the labium | 
or second maxills of insects, 
Submentum is the posterior 
division of the mentum. 
Mes-en'TE-RoN. The mid-gut or 
stomach. 
Mes'EN-TE-RY (Gr. mesos, inter- 
mediate; enteron, intestine). 
The membrane between the in- 
testine and abdominal walls. 
Mr'so-suast. The primitive, 
embryonic mesoderm, 
Mez-rTaG'E-NE-sIs. Alternation of 
generations. 
ME'TA-MERE. The same as som- 
ite or arthromere. 
GLOSSARY. 
Mon-a@'cr-ous (Gr. monos, single: 
otikos, house). With the sexual 
glands, etc., united in the same 
individual. 
My'o-Buast. The embryonic 
cells which become muscle 
cells, 
Myr-t-op'0-pa (Gr. murios, thou- 
sand ; pous, podos, foot). The 
class of tracheates comprising 
the Millipedes and Centipedes. 
Ne-mar’o-cyst (Gr. nema, a 
thread; ustis, a bladder). 
The nettling, stinging organs 
or thread-cells or lasso-cells of 
the jelly-fishes and polyps, 
etc. 
NE-PHRID'I-A (Gr. nephros, kid- 
ney). The segmental organs 
of worms, ete. 
NEU-ROP'TE-RA (Gr. neuron, 
nerve; pteron, wing). The 
order of net-veined insects with 
a complete metamorphosis. 
Nm-a-MEnN’TaL. Referring toa 
nest, or egg-sac. 
No'to corp (Gr. noton, back ; 
chorde, 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. 
Os’TEC-TED. 
cealed. 
O'po-na-Ta (Gr. odous, teeth). 
The dragon flies, 
O-Don'TO-PHORE (?Gr. odous, a 
tooth ; phero, I carry). The 
so-called tongue or lingual 
ribbon of the higher mol- 
lusks, 
Covered; con- 
