. Bulletin - United States National Museum. Science. THE SPIDER CRABS OF AMERICA 93 tubercle either side of cardiac spine; margin of branchial region tuberculate. Hepatic region steep, a granulate ridge running down to a laminate tooth on the margin. A triangular ptery^gostomian tooth. Front very short, formed of two rounded lobes separated by a narrow cut. The antennular cavities extend nearly to the extremity of the front and are separated by a partition developed inferiorly in a triangular tooth. Eyestalks short, with a flat upper surface, a tubercle on the anterior margin and another at th
. Bulletin - United States National Museum. Science. THE SPIDER CRABS OF AMERICA 93 tubercle either side of cardiac spine; margin of branchial region tuberculate. Hepatic region steep, a granulate ridge running down to a laminate tooth on the margin. A triangular ptery^gostomian tooth. Front very short, formed of two rounded lobes separated by a narrow cut. The antennular cavities extend nearly to the extremity of the front and are separated by a partition developed inferiorly in a triangular tooth. Eyestalks short, with a flat upper surface, a tubercle on the anterior margin and another at the extremity in the emargination of the cornea. The postocular tooth is small and easily broken off; it is thin and, at its origin a little behind the orbit, is laid close to the carapace; it is directed first forward and then outward, close to the eye; viewed from behind it is subtriangular, viewed from below it is narrower. Basal article oFantenna very deep, with a prominent crest below, which near the Fig. 2.^.-aepinvs septemspiso- anterior end bifurcates, the longer, outer sus (15165), MAxiLLiPED, X branch continuing to epistome where it terminates in a lobe. The exognath of the maxillipeds has a tooth on its outer margin. Chelipeds slightly enlarged; longitudinal lines of granules or small tubercles on margins and between; palm narrow; fingers gaping slightly in their basal half in male, the propodal finger hollowed out. 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.
Size: 1280px × 1952px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
