. Bulletin - United States National Museum. Science. THE SPIDER CRABS OF AMERICA 467 which is directed obliquely backward and outward and sometimes curved upward. A short, obhquely erect spine stands on the median line above the posterior margin. Chelipeds of male narrow, about as long as carapace. Arm nodose, palm with subparallel sides, dactylus about half as long as upper margin of palm. Legs rather slender, slightly nodose. Measurements.—Male (17959), extreme length of carapace 34, length from rostral sinus to posterior margin 24, extreme*width , width at base of spines mm. Color.
. Bulletin - United States National Museum. Science. THE SPIDER CRABS OF AMERICA 467 which is directed obliquely backward and outward and sometimes curved upward. A short, obhquely erect spine stands on the median line above the posterior margin. Chelipeds of male narrow, about as long as carapace. Arm nodose, palm with subparallel sides, dactylus about half as long as upper margin of palm. Legs rather slender, slightly nodose. Measurements.—Male (17959), extreme length of carapace 34, length from rostral sinus to posterior margin 24, extreme*width , width at base of spines mm. Color.—Enveloping hairs yellowish (Milne Edwards) or reddish- brown) (Latreille). • Habits.—Usually concealed by a covering of sponge which adheres to the hairs on carapace and legs. This serves as a protection to the crab, as fish avoid sponges in any form. Range.—North Carolina to Yucatan; West Indies; off Cape St. Roque, Brazil. Shallow water to 45 fathoms. Material examined.— Beaufort, North Carolina; 10 to 30 feet; station 7943, Fish Hawk; 1 young (51062). Off Beaufort, North Carolina; station 7951, Fish Hawk; 1 young (51005). Off Cape Sable, Florida; lat. 25" 03' 50" N.; long. 81° 20' 30" W.; 3i fathoms; gy. S. Sh.; December 18, 1902; station 7364, Fish Hawk; 1 ovigerous female (54459). Off Mujeres Island, Yucatan; 12 fathoms; coarse coral sand; William Stimpson; 1 female, type of Pericera dicantha (1919, M. C. Z.). Off Contoy Island, Yucatan; 12-18 fathoms; weedy rocks; William Stimpson; 2 immature females, identified by A. Milne Ed- wards as P. dicantha (1920, M. C. Z.). Cuba; 1914; Henderson and Bartsch, Tomas Barrera Expedition: Dimas Bay; May 17; 1 male (48723). Esperanza; May 11; 1 male, 1 female (48652). Bogue Islands, Montego Bay, Jamaica; 1910: On mangrove roots; June 23; ; 1 male (43026). On mangrove roots; July 2; E. A. Andrews; 2 males, encrusted with sponges (43027). July 6; E. A. Andrews; 1 young (43025); 2 females, ovigerous
Size: 1404px × 1780px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
