Boone, Crustacea, Cruises of "Eagle" and "Ara," 1921-28 87 



Synonymy. — llyas aculeata Gibbes, Proc. Amer. Assoc. Adv. Sci,, vol. 

 3, p. 171, 1850. 



Othonia aculeata Stimpson, Ann. Lye. Nat. Hist. N. Y., vol. 7, p. 49, 

 1859; Bull. Mus. Comp. ZooL, vol. 2, p. 116 (part), 1871.— Miers, 

 Journ. Linn. Soc. London ZooL, vol. 14, p. 673, pi. 13, fig. 6, 1879. 

 — Kingsley, Proc. Phila. Acad. Nat. Sci., p. 388, part. — Rathbun, 

 Proc. U. S. Nat. Mus., vol. 15, p. 255, pi. 34, figs. 1 and 2, 1892. 



Pitho aculeata Rathbun, Ann. Inst. Jamaica, vol. 1, p. 7, 1897 ; Bull. 

 U. S. Fish. Comm., vol. 20, part 2, p. 77, for 1900 (issued 1901) ; 

 Bijdragen tot de Dierkunde, Natura Artis Magistra, Amsterdam, 

 23E Afl., p. 19, 1924; Bull. 129, U. S. Nat. Mus., p. 357, pi. 127, 

 pi. 251, fig. 1, 1925. 



Pitho anisodon (von Martens). 



Plate 26. 



Diagnostic characters: Carapace shield-shaped, usually a little 

 longer than wide. Anterolateral teeth normally five, besides the orbi- 

 tal, the second and third teeth being united at base, the second tooth 

 always much smaller than the others. Interorbital space narrow. 

 Rostral horns short, subacute in young, separated by a V-shaped sinus, 

 usually bluntly rounded in older forms. First free segment of the 

 antennae with the outer lobe rounded, forward directed. Distal third 

 of male appendages lyre-shaped. 



Type: Von Martens' type material was collected in Cuba and is 

 deposited in the Berlin Museum. 



Distresution : Known from many of the Florida Keys, the Ba- 

 hamas, Cuba, Porto Rico, Guadeloupe, Jamaica and Curasao. 



Material examined : Several males and females taken in drag-net, 

 Cardenas, Cuba, March 5, 1928, by the "Ara." 



Color: The specimens taken by the ''Ara" are olivaceous green 

 mottled with fine whitish markings, also with tiny deep green flecks 

 on the upper surface. The under surface of the body is creamy 

 whitish. 



Habits : Beyond the fact that this species dwells in shallow water, 

 and protects itself by a camouflage of seaweed, sand, sponges, bryozoa, 

 etc., nothing has been recorded of its habits. 



Technical description : Carapace shield-shaped, convex, about one- 

 fifth longer than wide, except in very large females, which are usually 



