File:Keibel Mall 248-259.jpg

Figs. 248-259.— (After flardeen. Anier. Journ. of Anal,, vol. iv. 1805.) Figs. 248. 249, 251, 252, 254. 255, 257, 258. Ventral, lateral, and doraal views of model made by vertebrae during the chandrogenoui" period. On the left side the cartllaginouii, on the right the enveloping fibrous liwue i* shown. The latter is also shown on the eighth vertebra in Fig. 252. Fign. 248. 249. Embrj'o CXI.IV, lengtli 14 mm. M«gn. 17 : 1. Figs. 251. 252. Embryo XXII. length 20 mm. Magn. 13:1. Figs. 254. 255. Embryo CXLV. length 33 mm. Magn.QM. Figs. 2S7, 258. Embryo LXXXIV, length 50 mm. Magn. 9:1. Fig. 257. dorsal view, left half . Fig. 258. median view. Figs. 250, 253, 250. 259. sagittal -enions in the mid-line through the niilh, seventh, and eighth thoracic segments of a series of embryos from 15 to 50 mm. long. Fig. 250. Embryo CXLI\'. length 14 mm. Fig. 25B. Embryo C\'1I1, length 22 mm. Fig. 256. Embryo LXXIX. lenglh 33 mm. Fig. 259. Embryo CLXXXlV. length 50mm, C.e.. eorpus vertebra; Co«o, rib; CA.rf., chorda dorsalis; Z>t«, inteiw vertebtaldise; I,., lamina; L.v.. lig. ventrale; /'r.a.a.. proc.articulariaant. Isup,); Prji.p., proe. articularia post. {iaf.J; Pr.n.. proc. neumlis; Fr.rd., prae. radicularit; Pr.t.. prnc. spinaliK; PrJr., proc. transversus.

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