624 GLOSSARY. 



As'teb-oid (Gr. aster, a star; and- eidos, form). Star-shaped, or possessing 



radiating lobes or rays like a star-flsh. 

 As-te-boid'b-a. An order of EcMnodermaia, comprising the Star-fishes, 



characterized by their rayed form. 

 A-stom'a-tous (Gr. o, -without; stoma, mouth). Not possessing a mouth. 

 At'las (Gr. the god who holds up the heavens). The first vertebra of the neck, 



-which articulates -with and supports the skull. 

 A'tbi-um (Lat. ioifi hall). Apphed to the great chamber or " cloa ca," into 



-which the intestme opens in the Tunioata. 

 Au-eel'la (Lat. ouj-um, gold). Applied to the chrysalides of some Lepidojo- 



tera, on account of their exhibiting a golden lustre. 

 An'Bi-Gi.E (Lat. dim. of auris, earj. Applied to one of the cavities of the 



heart, by -which blood is driven into the ventricle. 

 ATJ-TOPtfA-Qi (Gr. autos, self; phago, I eat). Applied to birds -whose young 



can run about and obtain food for themselves as soon as they escape from 



the egg. 

 A'vEs (Lat. avis, a bird). The class of the Birds. 

 Av-i-on-LA'Bi-TiM (Lat. dvicula, dim.' of avis, a bird). A singular appendage, 



often shaped like the head of a bird, found in many of the PoVyzoa. 

 Axis (Gr. axon, a pivot). The second vertebra of the neck, upon -which the 



skull and atlas usually rotate. 

 Az'y-gos (Gr. a, -without ; zugon, yoke). Single ; -without a fello-w. 



Bao-te'ei-fm: (Gr. hahterion, a staff). A kind of staff-shaped filament which 

 appears in organic infusions after they have been exposed to the air. 



Bal'an-oees. 



Ba-lan'i-d.e (Gr. ialanos, an acorn). A family of sessile Cirripedes, com- 

 monly called " Acorn-snells." 



Ba-leen' (Lat. balasna, a whalel. The homy plates which occupy the palate 

 of the true or " whale-bone" "Whales. 



Bat'i-des (Gr. batos, a bramble). The family of the MasmoirancJiii, com- 

 prising the Kays. 



Ba-tea'ohi-a (Gr. iatracTuis, a frog). Often loosely applied to any of the 

 Amphibia, but sometimes restricted to the Amphibians as a class, or to the 

 single order of the Anoura. 



Bi'fid (Lat. Us, twice ; finio, I cleave). Cleft into two parts ; forked. 



Bi-lat'ee-ai. (Lat..Jis, twice ; laMs, a side). Ha-ving two symmetrical sides. 



Bi-ma'na (Lat. bis, twice ; manus, a hand). The order of Mammalia compris- 

 ing Man alone. 



Bip'e-dal (Lat. bis, twice ; pes, foot). Walking upon two legs. 



Bx-ea'mous (Lat. bis, twice ; ramus, a branch). Applied to a limb which is 

 divided into two branches («. g., the limbs of Cirripedes). 



Bi'vALVE (Lat. bis, twice ; valv/B, folding-doors). Composed of two plates or 

 valves ; applied to the shell of the ZamelUbrancMata and BraoMopodn, and 

 of the carapace of certain Crustacea. 



Blas-toid'e-a (Gr. blantos, a bud ; and eidos, form). An extinct order of EcM- 

 nodermata, often called Pentremites. 



Beaoh-i-op'o-da (Gr. bracliion, an arm ; pons, the foot). A class of the Mol- 

 luaeoida, often called " Lamp-shells,^' characterized by possessing two 

 fleshy arms continued from the sides of the mouth. 



Bea'chi-um (Gr. brachion, arm). Applied to the upper ann of Verte- 

 brates. 



Beaoii-y-u'ba (Gr. braohus, short ; oura, tail). A tribe of the Decapod Orus- 

 taeeans with short tails {i. «., the Crabs). 



Beaots. (6'eeHydrophyllia.) 



Bead-t-pod'i-d.e (Gr. bradus, slow ; podes, feet). The family of Edentata 

 comprising the Sloths. 



BEA^fCH'I-A f Gr. bragchia, the gills of fishes). A respiratory organ adapted to 

 breathe air dissolved ia water. 



Bbakoh'i-ate. Possessing gills or branchise. 



Beak-ohif'e-ea (Gr. bragoMa, gills ; and pAero, I carry). A division of ffos- 



