4IO 



BULLETIN OF THE BUREAU OF FISHERIES. 



Fig. 15. — Paguristes armatus, type. 



a. Dorsal view of carapace and frontal appendages; b 

 above: c, right cheliped. 



left cheliped, from 



Color, in alcohol, nearly white; each cheliped with a conspicuous orange-yellow band across the 

 meros; a faint trace of a similar band on each of the walking legs. 



A single specimen of this species was obtained by the Fish Hawk from the margin of the Gulf Stream, 

 30 miles south of the Cape Lookout Lightship. It is rather closely related to P. spinipes H. Milne- 

 Edwards, but differs in having much 

 shorter eyestalks and differently formed 

 hands. 



Genus CLIBANARIUS Dana. 



Clibaiuinus Dana, 1852, p. 6. 

 Clibanarius vittatus (Bosc). Striped 

 hermit crab. PI. xxx, fig. 9. 



POQurus vittatus Base, 1802. p. 78: H. 



Milne-Edwards, 1837, t. n, p. 237. 

 Clibanarius vittatus Stimpson, 1858, p. 235; 



Kingsley, 1878-79, p. 326. 



Anterior division of carapace sub- 

 quadrate ; front with the rostrum slightly 

 more prominent than the lateral projec- . 

 tions. Eyestalks long, slender, slightly 

 exceeding the peduncles of the anten- 

 nules, nearly cylindrical and curved 

 very little; cornea not dilated, scale 

 small, pointed, its margin serrate. An- 

 tennal peduncles about equal to those 

 of antennules, acicle acute and serrate 

 along the margin. Chelipeds similar on 

 the two sides; hand thick, inflated, covered thickly above and sparingly below with coarse tubercles 

 from the base of each of which springs a bundle of stiff hairs; fingers heavy, gaping at the base, cutting 

 edge corneous and extending along the upper side; carpus as long as hand to base of thumb, its upper 

 stMace with spiniform tubercles and hairs. Second and third pairs of legs exceeding the chelipeds by 

 over half the length of the dactyli ; their tips corneous and the two distal articles with numerous bundles 

 of hairs. Fourth and fifth pairs of legs reduced, the fifth ones very small and turned onto the back. 



Measurements of a female: Length of carapace, 28.5 mm.; eyestalks, 12.5 mm.; hand, 18 mm.; 

 width of front, 5.5 mm. 



Color in life, light olive-gray, with longitudinal stripes of darker color on the three anterior pairs 

 of legs. In alcohol the dark stripes on the legs become brownish red. 



This hermit crab is common throughout the harbor. It may be recognized at once by its sym- 

 metrical claws. 



Genus PETROCHIRUS Stimpson. 



PetTochirus Stimpson, 1858. p. 233(71). 



Petrochirus bahamensis (Herbst). PI. xxx, fig. 6. 



Cancer bahamensis Herbst, 1796, p. 30. 



Pagurus franulatus Olivier, 1811, p. 640; H. Milne-Edwards, 1834-1840. t. n, p. 225; Dana, 1852, p. 453; Henderson, 



1SS8, p. 56. 

 Petrochirus granulaius Stimpson, 1858, p. 71. 

 Petrochirus bahatnensis Benedict, igoi, p. 140. 



Anterior division of carapace flattened, rough and uneven and with scattered tufts of hairs; front 

 tridentate, the rostrum about as long as the lateral teeth. Eyestalks one and three-foiulhs as long as 

 distance between lateral teeth of front, straight, dilated distally and with a tuft of hairs above the cor- 

 neal siuface; scale small, its anterior margin serrate. Antennular peduncles exceeding eyestalks. 

 Antennal pedimcles shorter than eyestalks, acicle rather slender and with bundles of hairs. Chelipeds 



