. The Bashford Dean memorial volume :. Fishes; Sharks; Fishes, Fossil. The Embryology of Chlamydoselachus portion on the inside of the tube. The insides of the walls are crossed by minute striae, be- tween the laminae, which appear transverse, but in reality are spiral and ultimately— following the outlines of the anterior or posterior borders—terminate, forward and back- ward, in the longitudinal folds of the tube itself. The inner edges of the laminae are set with minute pores. Near the middle of its length there is a deeper transverse groove. This is crossed by the laminae without change in
. The Bashford Dean memorial volume :. Fishes; Sharks; Fishes, Fossil. The Embryology of Chlamydoselachus portion on the inside of the tube. The insides of the walls are crossed by minute striae, be- tween the laminae, which appear transverse, but in reality are spiral and ultimately— following the outlines of the anterior or posterior borders—terminate, forward and back- ward, in the longitudinal folds of the tube itself. The inner edges of the laminae are set with minute pores. Near the middle of its length there is a deeper transverse groove. This is crossed by the laminae without change in their directions on its account. The plates are not distinct from each other through the whole of their length; branches frequently cross obliquely from one to the other. The bottoms of the grooves between them have closely-set transverse partitions. The walls of the gland are thicker anteriorly; they begin abruptly or even extend a little in front of their points of attachment to the tube. The appearance is such as would result from twisting the inside walls of the duct very closely for a short distance. In this we have a hint as to the origin of the gland. 551. Text-figure 13 Interior of the shell gland of the frilled shark, Chlamydoselachus anguineus. Note the laminated structure. Printed from the original woodcut after the drawing by Paulus Roetter for Garman, 1885, Fig. C, pi. XX. This is not very clear nor does Carman's figure (Text-figure 13 herein), devoid as it is of explanatory lettering, help matters much. However, both must be reproduced here; the text because it is the only full description ever published, and the figure because it is the only one on record. This gland has also been studied and described by Hawkes (1905) and it seems well to quote her brief description. She gives no figure. For the first 6 cm. the oviduct is a straight tube, the walls of which are Uned with numerous laminae. This region passes into the oviducal gland, the walls of which are mu
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