Boone, Crustacea, Cruises of *'Eagle" and "Ara," 1921-28 27 



inconspicuous; the third article is slender, two-thirds as long as the 

 acicule, cylindrical, reaching slightly farther forward; the flagellum 

 is composed of about 39 tapering articles. 



The chelipeds are very slightly unequal, the right being a trifle the 

 larger in the young specimens, but the older, larger specimens have 

 these approximately equal. They are very much dorso-ventrally flat- 

 tened or ironed out, with the merus extending as far forward as the 

 base of the cornea and slightly triquetral, the upper and outer sur- 

 faces almost at angles to one another, both roughly granulose; the 

 carpus is short and wider than long, with the inner lateral margin 

 longer than the outer, convex and armed with three or four spines ; the 

 propodus and dactyli form a broad oval, which is wider through the 

 palm, the fingers tapering slightly; the upper surface very slightly 

 convex and entirely paved with coarse granules which have a spinu- 

 lose apex; along the convex lateral margins these become a series of 

 real, corneous spinules. The propodal finger is about as long as the 

 palm, forming a broad triangle, the apex acute, the cutting edge with 

 about ten broad, molarif orm teeth ; the hinged finger is similar to the 

 propodal but not so wide and fits closely upon it. 



The first and second ambulatories are similar, the second pair 

 slightly exceeding the first in length, both sides are subequal; both 

 ambulatories exceed the length of the cheliped by the length of the 

 ambulatory dactyl; the proximal joints are well developed; the merus 

 is short, scarcely longer than the carpus; the propodus is one and 

 one-fourth times as long as the carpus ; these three joints are rough, 

 with spinulose granules and setae on the upper surface ; the dactyl is 

 the longest joint of the leg, being as long as the carpus and propodus 

 taken together, very curved and tapering, with an acuminate horn 

 tip armed with spinules on the upper surface and stiff setae along 

 the lateral margin. 



The fourth legs are short, stocky, with the propodus rectangular, 

 almost squarish ; the dactyl about as long as the propodus and set at 

 its end, tapering, acuminate, with the concave postlateral margin set 

 with a row of coarse spinules. 



The fifth legs are small, reflexed, very weakly subchelate; the pro- 

 podus being elongate with many scales, the dactyli very short and 

 weak and concealed in a brush of setae. 



Synonymy. — Paguristes fecundus Faxon, Bull. Mus. Comp. Zool., 

 vol. 24, p. 173, 1893 ; Mem. Mus. Comp. Zool., vol. 18, p. 66, 1895. 



