Journal of morphology (1912) (14598014540)

Identifier: journalofmorphol23wist (find matches)
Title: Journal of morphology
Year: 1912 (1910s)
Authors: Wistar Institute of Anatomy and Biology
Subjects: Morphology Physiology
Publisher: Boston : Ginn & Co.
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library



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esis of the imaginal muscles. 2o Note the forming fibrillae in the circular and longitudinal muscles. Themuscles arc now arranged in their two definite layers and the e))ithelium is nowreformed. From an older pupa. 2() Cross striations can now be observed in the newly re-formed circular nuiscles((■..III.). These striations are faint and remain so till the emergence of the atlult.g.iiL., granular mass occupying the space between the loosened intima and theeuiThelium. From a pupa ICO hours old. 27 This figure shows the characteristic method of cell division; m, dividingcell; si., strand connecting the cell with the basement membrane; b.m.^ note thedistinct basement membrane between the epithelium and the muscular layer. 28 Shows a condition similar to figure 27. 2!) The epithelium from a i)upa forty-eight hours old; r, row of black dots nearthe outer ends of the epithelial cells where the imaginal intima will be re-formed. ()22 FORE-GUT OF CORYDALIS CORNUTUS L, KOBEKT MATHESON PLATE 4
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623 CHROMODORIS ZEBRA HEILPRIN: A DISTINCT SPECIES W. M. SMALLWOOD and ELIZABETH G. CLARK Contributions from the Bermuda Biological Station for Research No. 26, and fromthe Zoological Laboratory of Syracuse University SIX FIGURES The following paper supplements one published by the seniorauthor (Smallwood, 10). The two papers present the generalmorphology of Chromodoris zebra and point out the characterswhich distinguish it from C. villafranca. Bergh (92) believedthe two to be identical. The first paper gave a description ofthe external anatomy of C. zebra—the present one, the internalanatomy of the species. While our study of the internal anatomyhas shown no marked deviation from the general plan of organi-zation of the Doridae,^—so well described by Eliot (10,pp.36to49)with Doris tuberculata as example,—it has furnished informationconcerning the anatomical details of this species not hithertopublished. DIGESTIVE SYSTEM The mouth leads into a short but rather wide atrial chambe