THE SPIDER CRABS OF AMERICA 301 



anteimal article is acute. The jfingers of the feeble chelipeds of the 

 female are without enlarged teeth. 



Color. — -Grayish brown above, yellowish beneath, chelipeds plum- 

 beous, ambulatory legs somewhat flesh-colored. (Bell.) 



Measurements. — Type (Bell), length 17.8 mm. (7 lines), width 16.5 

 mm. (61^ lines). Female (1879, M. C. Z.), length to tip of horns 10. o, 

 width 8.5 mm. 



Range. — Galapagos Islands, to 6 fathoms. 



Material examined. — James Island, Galapagos Archipelago; Hass- 

 ler Exped.; 1 ovigerous female (1879, M. C. Z.). 



HERBSTIA PYRIFORMIS (Bell) 



Plate 104, figs. 2 and 3; plate 240, figs. 5-8 



Rhodia pyriformis Bell, Jroc. Zool. Soc. London, vol. 3, 1835 (1836), p. 

 170; Trans. Zool. Soc. London, vol. 2, 1836, p. 44, pi. 9, figs. 1-lc (type- 

 locality, Galapagos Islands, 6 fathoms, coral sand; type not extant). 



Herbstia pyriformis STIMPSO^f, Ann. Lye. Nat. Hist. N. Y., vol. 10, 1871, 

 p. 93. 



Diagnosis. — Merus of ambulatory legs unarmed. Four lateral 

 teeth or spines. Posterior margin of carapace strongly produced. 

 One spine on palm. 



Description. — Male: Carapace pyriform, somewhat depressed, re- 

 gions slightly and evenly elevated; rostrum about as broad as long, 

 small, consisting of two pointed teeth; lateral margin with four dis- 

 tant, minute teeth or spines; posterior margin strongly produced. 

 Orbits large, with a triangular hiatus above, and a preocular and 

 postocular tooth. Antennae twice as long as rostrum, basal article 

 bidentate, tooth at middle of outer margin shorter than the antero- 

 external tooth which is under and projects beyond the supero-internal 

 angle of orbit. 



Arm and wrist hairy and beset with small spines; hand hairy above, 

 smooth. Fingers slender, not gaping, minutely serrated. Ambula- 

 tory legs longer than chelipeds, the second pair by nearly one-third; 

 remainder diminishing gradually. They are nearly cylindrical, 

 smooth and hairy. (Bell.) 



Notes on a male from James Island. — The median posterior pro- 

 tuberance of the carapace is more abrupt than as figured by Bell and 

 is surmounted by a suberect, conical tubercle with a sharp point. 

 The rostrum is not so deeply bifurcate as in Bell's figure, but each 

 horn is longer than its basal width. The inner margins of the orbits 

 converge anteriorly where they arc tipped with a small spine; post- 

 ocular tooth tipped with a spinule; two supraorbital emarginations 

 between which the margin is transverse, not dentiform. The an- 

 terior spine of the basal antennal article is long, straight and acnmi- 

 5487— 25t 21 



