52 Bulletin American Museum of Natural History [Vol. LITI 
Osorio),! and C. zquabilis, I am tempted to doubt the correctness of the 
determinations on which these records are based. 
From the brief color note given by Aurivillius? it is possible that at 
least some of his Cameroon specimens are identical with C. chapinz. 
Clibanarius senegalensis Chevreux and Bouvier 
Clibanarius senegalensis CHEVREUX AND Bouvier, 1891, Bull. Soc. Zool. France, 
XVI, p. 256; 1892, Mém. Soc. Zool. France, V, p. 131, Pl. rv, figs. 7-11. Bass, 
1921, ‘Beitr. Kenntnis Meeresfauna Westafrikas,’ III, p. 40. 
Previously reported from Gross-Friedrichsburg, Gold Coast, and Victoria, 
Cameroon (Balss), and Dakar, Senegal (Chevreux and Bouvier). 
Banana, July 1915, 607,42 (1 ovig.); 3907, 2792 (5 ovig.). 
Red; punctate with bluish spots; rather distinctive and striking 
white dactyls with reddish margins and tip: terminal claw corneous, 
black. 
Clibanarius cooki Rathbun 
Plate IX, Figure 2b; Text Figure 72 
Clibanarius cookt RaTHBUN, 1900, Proc. U.S. Nat. Mus., XXII, p. 305, text figs. 
12 
Not definitely found again since first described by Miss Rathbun from a speci- 
men taken at the mouth of the Mesurado River, Monrovia. 
Banana, July 1915, 2367, 82 (3 ovig.). One of the males is very 
large (total length from rostral projection to end of telson not less than 
80 mm.; carapace, over all, 20.5.mm., anterior portion 14.5 mm.). 
Balss? has taken this species to be identical with C. africanus Aurivil- 
lius,* but probably had only that species before him, though their ranges 
are more or less the same. 
Comparing specimens of about the same size, it will be seen at once 
that C. cooki is much the more hairy species, with hairs two and three 
times as long as in its very sparsely haired relative. The dactyls, propodi, 
and carpi of the ambulatory legs of C. cooki are well provided with long 
hairs, while in C. africanus, though the dactyls are short-haired, the 
propodal and carpal joints are naked. The chele of C. cooki are also very 
hairy, whereas those of C. africanus are without hair except for the in-’ 
conspicuous hairs on the fingers. Figures given by Miss Rathbun and by 
Aurivillius (loc. cit.) indicate fairly well the relative hairiness of the am- 
bulatory legs. 
eS Wea EMM NMR REN Ii Oe OF ed Oven ees HME nt cour a eee Oe ae a cl a 
11887, Jorn. Sci. Nat., Lisboa, XI, p. 228; loc. Zaire or the Congo. 
_1898, Bihang K. Sv. Vet.-Akad. Handl., Stockholm, XXIV, Afd. IV, No. 1, Dp: 12, Pl: tv, fig. 8. 
192t, Beitr. Kenntnis Meeresfauna Westafrikas,’ ITT, p. 40. 
1898, Bihang K. Sv. Vet.-Akad. Handl., Stockholm, AATV, Aid. TV, No: ft, p12, Pl. tv; fig. 7. 
