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Bashford Dean Memorial Volume 



ni2;able from the ventral surface, and the largest follicles represented on the dorsal 

 surface measure only 6 mm. in diameter. 



Carman's (1885.2) figure, reproduced as my Text-figure 94, portrays the ovaries 

 of his specimen. He states that the ovaries had been badly preserved and that they were 

 much torn. Hawkes (1907) writes that the ovaries of Chlamydoselachus are diffuse 

 bodies attached by broad mesenteries to the line of attachment of the "stomach" mesen- 

 tery. The right ovary is placed somewhat more anteriorly than the left. 



In Heptay^chus (Daniel, 1934) and in Hexaiichus (Semper, 1875, Fig. 1, pi. XIV), 

 a rudimentary testis is associated with each ovary. In Heptanchus maculatus this testis 

 lies in the mesovarium, at the base of the ovary, and runs parallel with the ovary. The 



Text-figure 94. 

 Ovaries and oviducts of Chlamydoselachus, drav;7n one-half natural size. 



ng, nidamental gland; o, ovary. 

 Printed from the original wood-cut after the drawing by Paulus Roetter for Garman, 1885.2, Fig. 1, pi. XIX. 



rudimentary testis consists of an anterior larger portion, and a marked swelling or ridge 

 which extends practically the entire length of the ovary. 



The Oviducts. — The oviducts of my four specimens are shown, in ventral view, in 

 Text-figures 85 to 88 inclusive. In specimen No. IV there is but slight differentiation in the 

 regions of the future uteri (ut.) and shell glands (s.g.)\ all parts of the oviducal system show 

 strict bilateral symmetry save that the rudiment of the right shell gland is slightly larger 

 than the rudiment of the left, and the right ventral ligament is quite noticeably larger than 

 the left. In specimen No. Ill, all the oviducal organs of the right side are decidedly larger 

 than those of the left. The discrepancy is even greater in my specimens I and II. To be 

 sure, in specimen No. I a large part of the uterus has been cut away, but the form of the 

 remaining portion gives evidence of the original size. I conclude that, so far as one can 

 judge from the specimens at hand, only the right oviduct is ordinarily functional, but the 

 degree of development attained by the left oviduct is such that it might possibly become 

 functional. In any case, the oviduct proper must become greatly distended while an egg 

 (60 X 100 mm.) is passing through it, and some idea of the siz,e of the uterus after it has 

 contained developing embryos may be obtained from Text-figures 87 and 88. 



