Kansas University quarterly . a superior temporal arch, bridging over a smallopening leading downward to the inferior temporal fossa. The fol-lowing measurements will give the principal dimensions of thisspecimen. Length from tip of premaxillary to occipital condyle. 680 millim. Extreme length of skull 780 Extent of crest beyond orbit 145 Greatest diameter of orbit 65 Antero-posterior diameter of nasal opening 135 Length of quadrate 120 Width of lower jaw at articulation 22 Pubis. In a previous paper on the anatomy of Pteranodou,^ I stated that Ihad never seen the so-called prepubic bones. Sin
Kansas University quarterly . a superior temporal arch, bridging over a smallopening leading downward to the inferior temporal fossa. The fol-lowing measurements will give the principal dimensions of thisspecimen. Length from tip of premaxillary to occipital condyle. 680 millim. Extreme length of skull 780 Extent of crest beyond orbit 145 Greatest diameter of orbit 65 Antero-posterior diameter of nasal opening 135 Length of quadrate 120 Width of lower jaw at articulation 22 Pubis. In a previous paper on the anatomy of Pteranodou,^ I stated that Ihad never seen the so-called prepubic bones. Since that time, how-ever, an excellent specimen of them has been discovered among ourmaterial. The specimen of which they are a part consists of the largerportion of the skeleton, and is perhaps conspecific with the one towhich the described pelvis belongs. The figure given herewith willconvey a good idea of their shape. The bones of the two sides arefirmly co-ossified, and have been pressed nearly flat; the figure repre- (L. FIG. I. *Amei. Naturalist, Uec. 1891, p. 1124. In this article the descripfiou of thefoot-phalanges should read: All are slender, excejit tlie second one in the thirdtoe, and tlie second and third in the firmlli toe, wiiere they are scarcely longerthan wide. williston: Kansas pterodactyls. 5 sents them as they are spread out in one plane. The bone is ver}-thin throughout, with a slight thickening at the ischial {a) attachmentonly. Ikying contiguous with the anterior projection, is a slenderventral rib (//). It is possible that the curvature of this bone may beinward, rather than outward. This peculiar structure of the pubis (I belive it represents thepubis, and not the prepubis) seems to be quite similar to that whichobtains in the genus Rliaiiipliorliyiicliits, and, perhaps also, in Pfero-dactyhis sucviciis {Cycuorliaiiipliits Seeley), and very different from thatfound in other species of Picrodactyliis. The principal measurements of the above described spe
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