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ANIMAL ACTIVITIES. 
VOCABULARY. 
Ab do’men (derivation uncertain), 
the posterior part of the body in 
insects. 
An ten’na, pl. antenne (Gr. ana, 
up, and fezzo, stretch), a feeler 
growing from the head of an in- 
sect. 
An te’ri or (Lat. 
front. 
Bi lat’er al (Lat. 42s, twice, and 
Jatus, side), having two sides 
alike. 
Chi’tin (Gr. chiton, a tunic), the 
horny substance forming the exo- 
skeleton of insects. 
Cox’a (Lat. coxa, the hip), the joint 
of an insect’s leg next the body. 
Dor’sal (Lat. dorsum, the back), 
opposed to ventral. 
Fac’et (a diminutive of face), a part 
of a compound eye. 
Fe’mur (Lat. femur, the thigh), 
the thigh. 
La’bi um (Lat. /adium, lip), the 
lower lip of an insect. 
La’brum (Lat. /adrum, lip), the 
upper lip of an insect. 
Man‘di ble (Lat. mando, chew), 
the hard, biting jaw of an insect. 
Max il'la (Lat. macero, soften), 
the softer jaw behind the man- 
dibles of an insect. 
Mes 0 tho’rax (Gr. mesos, middle, 
and ¢horax), the middle segment 
of the thorax. 
Me’ta mor’pho sis (Gr. meta, over 
or beyond, and morpho, form), 
the changes which take place in 
an animal from egg to adult. 
Met a tho’rax, the posterior seg- 
ment of the thorax. 
Moult (Lat. muto, change), the 
shedding or casting of the exo- 
skeleton. 
Nymph (Gr. nymphé, a bride), a 
name applied to the young of 
some Masects, asthe grasshopper. 
ante, before), 
O cel’lus (Lat. dim. of oczzlus, eye), 
a small eye. 
O vi pos’i tor (Lat. ovum, egg, and 
pono, place), an instrument for 
depositing eggs, 
Pal’pus, pl. palpi (Lat, palpo, feel), 
a feeler growing from one of the 
mouth-parts. 
Pleu‘rum (Gr. p/euron, rib), the 
side of the segment of an insect. 
See Fig. 
Pos te’ri or (Lat. ost, after), hind- 
er. 
Pro tho’rax (Gr. fro, before, and 
thorax), the first segment of the 
thorax. 
Spir’a cle (Lat. spiraculum, air- 
hole), a breathing-hole. 
Ster’num (Gr. s¢ernon, breast), the 
ventral portion of the segment of 
an insect. 
Strid u la’tion (Lat. s¢rzdo, creak), 
a creaking noise made by in- 
sects. 
Tar’sus (Gr. ¢arsos, a flat surface), 
the foot of an insect. 
Ter’'gum (Lat. ¢ergum, back), the 
dorsal part of the segment of an 
insect. 
Tho’rax (Gr. thorax, the chest), 
the middle division ofan insect’s 
body. 
Tib’i a (Lat. iba, shin-bone), the 
part of an insect’s leg between 
the femur and foot. 
Tra’che a (Gr. ¢racheia, rough), 
one of the breathing-tubes of an 
insect. 
Tro chan’ter (Gr. ¢recho, run), a 
part of an insect’s leg between 
the coxa and femur. 
Tym’pa num (Gr. tympanon, a 
drum), an ear-drum. 
Ven’tral (Lat. venter, the belly), 
pertaining to the belly, the part 
opposite the back. 
