. Bulletin - United States National Museum. Science. 374 BULLETIN 129^ UNITED STATES NATIONAL MUSEUM PITHO DISPAR, new species Plate 132, fig. 1; plate 133, fig. 1 fOlhonia quinquedentala Aurivillius (not Bell), K. Svenska Handl., vol. 23, 1889, p. 56, pi. 3, fig. 9 (Wreck Bay, St. Thomas). Pitho anisodon Rathbun, Bull. U. S. Fish Coram., vol. 20, for 1900, pt. 2 (1901), p. 77 (part: specimen from Culebra). Type-locality.—Ensenada Honda, Culebra Island, Porto Rico; 1 ovigerous female, holotype. (Cat. No. 24205, ) Diagnosis.—Four lateral teeth. Rostral lobes rounded, riot
. Bulletin - United States National Museum. Science. 374 BULLETIN 129^ UNITED STATES NATIONAL MUSEUM PITHO DISPAR, new species Plate 132, fig. 1; plate 133, fig. 1 fOlhonia quinquedentala Aurivillius (not Bell), K. Svenska Handl., vol. 23, 1889, p. 56, pi. 3, fig. 9 (Wreck Bay, St. Thomas). Pitho anisodon Rathbun, Bull. U. S. Fish Coram., vol. 20, for 1900, pt. 2 (1901), p. 77 (part: specimen from Culebra). Type-locality.—Ensenada Honda, Culebra Island, Porto Rico; 1 ovigerous female, holotype. (Cat. No. 24205, ) Diagnosis.—Four lateral teeth. Rostral lobes rounded, riot pointed. Orbital lobes not produced. Lobe of first movable segment of antenna small. Description.—Carapace longer than wide, oblong-oval and hairy; branchial regions sparingly granulate; lateral teeth four, of rather small size, the first or anterior tooth low, its sides at right angles to each other, end rounded; three remaining teeth broad, curved, with a short, sharp point, the second tooth widest, the third most out- standing; in the interval between the first and second teeth of the left side there is a small tubercle. Rostrum divided into two short, rounded lobes or teeth. Orbital angles not produced, inconspicuous,. Fig. 119.—Pitho dispar, female (24205), outline of front and orbits, from below, X 6. anterior margin of preorbital lobe and of basal antennal segment transverse, not oblique as in other species; postorbital lobes with outer margins converging anteriorly, terminal angle a right angle. First movable segment of antenna narrow, a little longer than wide, outer lobe short, directed forward. Variation.—Only two specimens of the species have been ob- served. The second one is also female, but immature -and smaller than the holotype, and differs from it as follows: The branchial granu- lation is scarcely visible; the second lateral teeth lack a sharp tip, and may perhaps be broken off; there is no trace of a tubercle between first two teeth; the rostral l
Size: 3311px × 755px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
