690 
embracing the spiders, scor- 
pions, and mites, 
A'RE-O-LATE. Furnished with 
small areas; like a network. 
A-ris'Tare. Furnished with a 
hair. 
AR-THRO’PO-DA (Gr. arthros, a 
joint; pous, podos, foot). Those 
Articulata with jointed feet, 
such as crabs, bees, etc. 
AR-TI-CU-LA'TA (Lat.articulus, di- 
minutive of artus, a joint). 
Cuvier’s subkingdom of worms, 
crustacea, and insects. 
AR-TI-O-DAC'TY-LA (Gr. artios, 
even; daktulos, finger or toe). | 
Those Ungulates with an even 
number of toes, as the ox. 
A-sEx’u-AL. Applied to animals, 
especially insects, in which the 
- ovaries or.reproductive organs 
are imperfectly developed ; and 
which produce eggs or young 
by budding. 
Av-RE'LI-A. Old term for the 
pupa of an insect. 
AU'RI-CLE (Lat. auricula, a little 
ear). One of the cavities of 
the heart of mollusks and verte- 
brates. 
Az'y-Gos (a, without ; zugon, a 
yoke, a pair). An organ, such 
as a nerve or artery, situated 
in the middle line of a bilater- 
ally symmetrical animal, which 
has therefore no fellow. 
Ba-no'Po-pa (Gr. baino, to walk). 
The thoracic legs of insects. 
Bz'no-somE (Gr. baino, to walk; 
soma, body). The thorax of in- 
sects. 
Bri. Divided into two parts; | 
forked, 
GLOSSARY. 
Buas’T0-DERM (dlastos, a bud or 
sprout; derma, skin), The outer 
layer of the germ-cells of the 
embryo. 
‘Buas'To-PoRE. The mouth of 
the gastrula. 
Buas'T0-SPHERE. The embryo 
when consisting of a single 
cell-layer. 
Bran‘cur-a. A gill or respiratory 
organ of aquatic animals, 
BRAN'cHI-AL. Relating to the 
gills or branchie. 
Bouc'cau. Relating to the mouth 
cavity; orrarély to the cheeks. 
But'Late. Blistered. 
CA-DU-CI-BRAN'CHI-ATE (Lat. ca- 
ducus, falling off; Gr. bragchia, 
gills). Applied to those Ba- 
trachia in which the gills be- 
come absorbed before adult life. 
CaL'ca-RA-TED. Armed with 
spurs. ; 
Ca'Lyx. A little cup; often ap- 
lied to the body of a Crinoid. 
Cap'I-raTe, Ending in,a head or. 
knob. 
Crn-tTrum. The body or central 
part of a vertebra. 
Cr-pHALIC. Relating to the 
cephalum or head. 
CE-PHAL'O-MERE. A cephalic seg- 
ment of an Arthropod. 
CE-PHAL’'0-SOME. The head of in- 
sects, Arachnida and Myrio- 
poda, 
Crr-co'Po-pa (Gr. cercos, tail: 
pous, podos, foot). The last pair 
of jointed abdominal appen- 
dages of insects; the ‘‘cerci.” 
Cue'La. The terminal portion of 
a limb with a movable lateral 
part, like the claw of acrab; as 
