. Bulletin - United States National Museum. Science. Figs. 355-357.—Hydrus platurus. IJ x nat. size. 355, top of head; 35ti, side of head; 357, UNDERSIDE OF HEAD. No. 8, Scl. COLL. TOKYO. oculars; rostral nearly as high as broad, w^ell visible from above; nasals not much longer than prefrontals, the suture between the former about twice as long as between the latter; frontal much longer than its dis- tance from tip of snout and nearly as long as parietals, much wider than supraoculars; parietals long, with irregular outlines, a small inter- calated shield in the suture between them; no loreal;
. Bulletin - United States National Museum. Science. Figs. 355-357.—Hydrus platurus. IJ x nat. size. 355, top of head; 35ti, side of head; 357, UNDERSIDE OF HEAD. No. 8, Scl. COLL. TOKYO. oculars; rostral nearly as high as broad, w^ell visible from above; nasals not much longer than prefrontals, the suture between the former about twice as long as between the latter; frontal much longer than its dis- tance from tip of snout and nearly as long as parietals, much wider than supraoculars; parietals long, with irregular outlines, a small inter- calated shield in the suture between them; no loreal; a long preocular, pointed anteriorly; tw^o suboculars; two postoculars; three anterior temporals; ten supralabials, second largest, in contact with pre- frontals, fourth to tenth small and low, none entering eye; no differ- entiated chin-shields; 61 scale rows around middle of body, the scales hexagonal, juxtaposed, smooth; no difi'erentiated ventrals or sub- caudals; two slightly enlarged scales, one at each side in front of vent; terminal scale on tail somewhat enlarged. Color (in alcohol) on back dark seal-brown, sides and underparts abruptly clay-colored, the. 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 United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
