. The anatomical record. Anatomy; Anatomy. PARAPHYSIS AXD PINEAL REGION OF SNAKE 611 ABBREVIATIONS ACC, process from the roof of the di- encephalon marking the attachment of the accessory parietal organ. ACP, accessory paraphysis BV, blood vessel CH, cerebral hemisphere DCP, diencephalic choroid plexus DI, diocoel DM, di-mesencephalic groove E, epiphysis FM, foramen of Monro IXF, infundibulum LCP, lateral choroid plexus P, paraphysis PA, paraphysal arch PC, posterior commissure PO, parietal organ SC, superior commissure TM, telencephalon medium TP, tuberculum posterius TT, torus transversus VT
. The anatomical record. Anatomy; Anatomy. PARAPHYSIS AXD PINEAL REGION OF SNAKE 611 ABBREVIATIONS ACC, process from the roof of the di- encephalon marking the attachment of the accessory parietal organ. ACP, accessory paraphysis BV, blood vessel CH, cerebral hemisphere DCP, diencephalic choroid plexus DI, diocoel DM, di-mesencephalic groove E, epiphysis FM, foramen of Monro IXF, infundibulum LCP, lateral choroid plexus P, paraphysis PA, paraphysal arch PC, posterior commissure PO, parietal organ SC, superior commissure TM, telencephalon medium TP, tuberculum posterius TT, torus transversus VT, velum transversum. Figs. 1-3 Sagittal sections of an embryo (C2) having a length of 11 mm. Stage I. Figure 1 is a combination of two adjacent sections through the brain, showing the relation of the epiphysis, parietal organ, velum, paraphysal arch, postvelar arch, and di-mesencephalic groove. X 20.' Figures 2 and 3 are de- tailed drawings of the sections of the epiphj'sis and parietal organ from which figure 1 was made. X 230. the posterior one opens by a wide mouth into the roof of the diencephalon. The distal ends of the two evaginations come in contact with the overlying external epithelium of the head. The velum transversum is present as a low ridge on the dorsal wall which continues laterally and ventrally and becomes more prominent at the sides than on the middle line and extends downward to the postoptic prominence. Externally ridgethis is manifest as a shallow Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bardeen, Charles Russell, 1871-1935, ed; Boyden, Edward A. (Edward Allen), 1886-1976; Bremer, John Lewis, 1874- ed; Hardesty, Irving, b. 1866, ed; American Association of Anatomists; American Society of Zoologists; Wistar Institute of Anatomy and Biology. [New York, etc. ] A. R. Liss [e
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1906
