UST 



aclb 



GAL 



AST 



FIG. 63. A, skeleton of Rana temporaria. The left limbs, left shoulder girdle, and 

 membrane bones of the left side of the skull are removed. Cartilaginous parts dotted; 

 names of cartilage bones in thick; those of membrane bones in italic capitals, a.c.hy, 

 anterior cornu of hyoid; actb, acetabulum ; AST, astragalus; b.hy, basi-hyal ; C, calcar; 

 CAL, calcaneum ; EX.OC, exoccipital ; FE, femur ; fon, /on', fontanelles ; FR.PA, fronlo- 

 parietals; HU, humerus ; IL, ilium; MX, maxilla; olf.cp, olfactory capsule; ot.pr, otic- 

 process ; p.c.hy, posterior cornu of hyoid ; PMX, premaxilla; PR.OT, prootic ; RA.UL, 

 radio-ulna; SP.ETH, sphenethmoid ; SQ, squamosal ; S.SCP, supra-scapula ; sus, sus- 

 pensorium; TI.FI, tibio-fibula; tr.pr, transverse process; UST, urostyle ; V.I, cervical 

 vertebra; V.g, sacral vertebra; VO, vomer; i-v, digits. B, the fourth vertebra seen from 

 in front, a.zyg, anterior zygapophysis ; en, centrum ; lm, lamina ; n. sp, neural spine ; pd, 

 pedicle ; tr.pr, transverse process. (From Parker and Haswell's Zoology, slightly 

 altered from Howes.) 



