676 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



The basal article of the uropoda is 3 mm. in length. The branches 

 are subequal and are 5 mm. long. The legs are all ambulatory. The 

 first pair is not furnished with a process at the distal end of the 

 propodus. The dact3 7 lus is bi-unguiculate. 



In the female the second antenna? extend only to the posterior 

 margin of the seventh thoracic segment. 



LIGYDA EXOTICA (Roux). 



Ligia exotica Roux, Crust. Mdit., 1828, p. 3, pi. xin, fig. 9. 



Ligia grandix PERTY, Delectus animaliura articulatorum, etc., 1830-1834, p. 212, 



pi. XL, fig. 13. 



Ligia gaudichaudii MILNE EDWARDS, Hist. Nat. Crust., Ill, 1840, p. 157. 

 Ligia (Italica) coriacea KOCH, Deutschlands Crust,, 1835-1844, p. 36. 

 Ligia gaudichavdii DANA, U. S. Expl. Exp., Crust., XIV, 1853, p. 741, pi. XLIX, 



figs. 6 a-h. NICOLET, in Gay, Hist. Chile, III, 1849, p. 265. 

 Ligia exotica BUDDE-LUND, Crust. Isop. Terrestria, 1885, pp. 266-268. DOLLFUS, 



Bull. Soc. Zool. France, XVIII, 1893, p. 189. RICHARDSON, Proc. U. S. Nat. 



Mus., XXI, 1899, p. 866; Ann. Mag. Nat. Hist. (7), IV, 1899, p. 335; 



American Naturalist, XXXIV, 1900, p. 306; Proc. If. S. Nat. Mus., XXIII, 



1901, p. 575. 



Localities. California; Topolobampo, Mexico; Cedar Keys, Florida; 

 Lake Harley , Florida; Fort Macon, North Carolina; Mazatlan, Mexico; 



Florida Keys; New Providence, Baha- 

 mas; Beaufort, North Carolina; Key 

 West, Pine Key, Florida; Port Tampa, 

 Florida; Panama; Charleston, South 

 Carolina; Antigua, West Indies; Chusan; 

 Macao; Bahia, Brazil; Puntarenas; Mad- 

 ras; Manila; Luzon; Singapore; Mas- 

 silia; Espiritu-Santo, Balandra Bay, near 

 Point Diablo; Chili; He Ronde; Mahe; 

 Tientsin, China; Guadalupe Island; Mi- 

 saki, Sagaini, Japan; Tokyo, Japan; 

 Honolulu, Hawaii. Found on piles at 

 wharf; along the docks. Called "sea 

 monkeys" in Florida. Very numerous 



FIG. 716. LIGYDA EXOTICA (AFTER , 



ROUX). among rocks. 



Body oblong-ovate, a little more than 



twice as long as wide, 14 mm. : 30 mm. Length of uropoda from tip 

 of terminal segment of body equal to 18 mm. Length of body with 

 uropoda equal to 48 mm. Surface covered with minute granules. 



Head twice as wide as long, 3 mm. : 7 mm. Anterior margin regu- 

 larly rounded. Eyes large, round, composite, and placed at the 

 extreme lateral margins. The first pair of antenna are inconspicuous 

 and rudimentary; they are composed of two subequal articles and a 

 minute terminal one; they extend to the end of the basal article of the 



