Investigations of the aquatic resources and fisheries of Porto Rico - Softcover

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 Excerpt: ... 4; preorbital 8.5; I), xtl, 11; A. in, 8; scales 8-fi8-l(, about 50 pores. Body elongate, irregularly elliptical, the back not greatly elevated, highest at nape; profile regularly and strongly convex from above eye to spinous dorsal; snout rather short and bliuitish, its upper profile straight and steep; eye very large; interorbital space very convex; preorbital narrow; mouth small, oblique, lower jaw somewhat projecting; maxillarv scaleless, reaching front of orbit; upper jaw with a broad bund of villiform teeth, outside of which is a row of enlarged, but comparatively small teeth; no canines; lower jaw with one series somewhat stronger than outer teeth of upper jaw; inside of these is a rather broad villiform band of teeth in front of jaw only; tongue with a very broad irregularly ovate patch of teeth, its width almost as great as width of tongue, 1.5 in its length; in front of this patch is a large roundish patch of teeth; an oblong patch of teeth on hyoid bone; vomer with a rhomboid (O-shaped) patch of teeth, forming almost a right angle in front, with a broadly wedge-shaped backward prolongation on median line, its length alxmt twice its width; palatine band of teeth very wide; pterygoids with a large patch of teeth, these teeth undeveloped and covered by skin in young examples, (iillrakers numerous, longest about half diameter of eye, about 6 i 21. Preoperde with posterior margin almost straight and vertical, slightly emarginate, weakly serrate alve, teeth coarser at angle and on lower border; posterior nostril larger, nearly round. Scales very small, rows above lateral line running upward anil backward, rows below rather wavy, almost horizontal; temporal region covered with small partially embedded scales, in 4 or 5 rows; cheek with 7 rows of scales...