36 



3,5 nrii- ^ong, one-fourth longer than the carapace without the rostrum, a Httle shorter than 

 the latter; it is of a narrow shape, resembHng a scimitar, the width being only one-seventh 

 the length, and from the posterior third it gradually narrows, ending in an acuminate spine; 

 the very concave outer margin is armed with 8 or 9 articulated spines, while the arched inner 

 margin is fringed with long feathered setae. Antennal flagellum probably but a little more than 

 half as long as the body. 



The measurements of the 2™' maxillipeds (Fig. 9/) differ from those oiStylod. ditnaxillaris 

 Bate (Report Challenger Macrura, 1888, PI. CXXXVIII, fig. 3//): these appendages are probably 

 characteristic for each species of the genus. The long third joint, which consists probably of 

 the two joints ischium and merus coalesced to one, is 1,22 mm. long, when measured along 

 the outer margin, and 0,37 mm. broad in the middle, whence it slightly narrows towards both 

 extremities; the following joint, evidently the carpus, is 0,35 mm. long and 0,27 mm. wide 

 anteriorly; the next joint, which, like in Stylod. bimaxillaris, somewhat widens distally, is 

 0,96 mm. long, 0,44 mm. wide distally and 0,26 mm. proximally. The longer one of the two 

 terminal joints is 0,75 mm. long and shows its greatest width of 0,26 mm. in the middle, being- 

 3-times as long as wide; the inner margin runs slightly S-like, the outer is rather strongly 

 arched; the other joint is 0,52 mm. long and half as wide in the middle, narrows, like the 

 longer joint, towards both extremities, the inner margin is straight, the outer very convex. 

 While in Stylod. bimaxillaris the joint, that follows the carpus, is only half as long as the 

 third joint, in Stylod. Amaryntliis it is much larger and measures four- fifths of the 

 latter; the 3"^'^ joint appears in Stylod. bimaxillaris of a more slender form and, while in Batk's 

 species the longer of the two terminal joints shows a greater length than the preceding joint, 

 in Stylod. Amarynthis it is shorter, measuring only about three-fourths of the probable propodus. 

 The exopodite is 2,05 mm. long and reaches by the distal third of its length beyond the 3'^'^ 

 joint, while in Stylod. bimaxillaris it is only as long as this joint. As regards the long feathered 

 hairs with which this maxilliped is provided, both species resemble one another, but in Stylod. 

 Amaryntliis only the two distal fifths of the exopodite are setiferous and those at the distal 

 extremity are 1,2 mm. long, much longer than in B.vte's figure. 



The external maxillipeds extend by a little more than their terminal joint beyond the 

 rostrum. The upper margin of the antepenultimate joint is unarmed and nearly glabrous, but 

 on the middle of the outer surface 9 or 10 small spines are implanted, of which that on the 

 distal extremity is a little longer than the preceding; the penultimate joint, which is 3,45 mm. 

 long and 0,24 mm. wide, 14-times as long as wide, is armed with 4 or 5 small spines along 

 the proximal half and with a somewhat longer spine, long 0,2 mm., at the distal extremity of 

 the upper margin, a row of a dozen similar spines, 0,16 — 0,2 mm. long, are moreover implanted 

 on the outer surface near the latter; the terminal joint, 2,92 mm. long, a little shorter than 

 the penultimate, is 0,17 mm. wide at the base, from where it slightly tapers to the rather 

 obtuse extremity; this joint is of a more narrow form than the penultimate and not spiniferous, 

 its upper margin bears a few short hairs, but the lower margin is fringed with long setiferous 

 setae, like the lower margin of the preceding joints. 



The 1^' pair of peraeopods extend by a little more than half the length of the fingers 



