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.chy, 

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

 CAL, calcaneum; EX.OC, exoccipit.il; FE, femur; /'on, foil', fontanelles ; FR.PA, fronto- 

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

 process ; p.c.hv, posterior cornu of hyoid ; /'A/A, premaxilla; I'K.ot, prodtic ; ra.ul, 

 radio-ulna; SP.ETH, sphenethmoid ; SQ, squamosal; s.sci', supra-scapula; sus, sus- 

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

 vertebra; V.9, sacral vertebra; I'O, vomer; I-V, digits. B.the fourth vertebra seen from 

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

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

 altered from Howes.) 



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