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 

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

 propodus. The dact3dus 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. Medit., 1828, p. 3, pi. xiii, lig. 9. 



Ligia gnoidift TPerty, Delectus animalium artieulatorum, etc., 1880-1834, p. 212, 



pi. XL, tig. 13. 

 Ligia gandichaudii Milne Edwards, Hist. Nat. Crust., Ill, 1840, p. 157. 

 Ligia {Italica) coriacea Koch, Deutschlands Crust., 1835-1844, p. 36. 

 Ligia gaud ichaudii Da's A, U. S. Expl. Exp., Crust., XIV, 1853, p. 741, pi. xlix, 



figs. 6a-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, XYIII, 1893, p. 189.— Richardson, Proc. IT. S. Nat. 



Mus., XXI, 1899, p. 866; Ann. Mag. Nat. Hist. (7), IV, 1899, p. 835; 



American Naturalist, XXXIV, 1900, p. 806; Proc. U. S. Nat. Mus., XXIII, 



1901, p. 575. 



Local !t!is. — 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 Konde; Mahe; 

 Tientsin, China; Guadalupe Island; Mi- 

 saki, Sagami, Japan; Tokyo, Japan; 

 Honolulu, Hawaii. Found on piles at 

 wharf; along the docks. Called ""sea 

 monkeys" in Florida. Very numerous 

 among rocks. 



Body oblong-ovate, a little more than 

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

 of terminal seg-ment of body equal to 18 nmi. 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 tirst pair of antcnnw are inconspicuous 

 and rudimentary; they are composed of two sul)equal articles and a 

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



Fig. 716.- 



-LUiYUA EXOTICA 



Roux). 



(After 



