710 PROCEEDINGS OP THE NATIONAL MUSEUM. vol. 47. 



BRACHIELLA PINGUIS, new species, 

 Plate 55, figs. 239 to 244; plate 56, fig. 245. 



Host and record of specimens. — Two adult females with egg strings, 

 one young female and a male of this species were taken from the 

 mouth of Antimora viola by the Bureau of Fisheries steamer Albatross 

 in 1883 in the middle Atlantic south of Newfoundland. The bettor 

 of the adult females has received Cat. No. 43540, U.S.N.M. and is 

 made the species type; the others become para types and have been 

 given Cat. No. 8341, U.S.N.M. 



Specijic characters of female. — Cephalothorax short, stocky, and 

 cylindrical, not flattened ; head enlarged a little and covered with *a 

 dorsal carapace; neck separated from the trunk dorsally by a well- 

 defined groove; trunk ovate and smooth, without ridges or pits; two 

 small posterior processes, close together on the ventral surface and 

 about one- third as long as the egg strings; no genital process; egg 

 strings stout and a little longer tlian the trunk; eggs small, arranged 

 in twelve longitudinal rows, about 30 eggs in the longest rows. First 

 antennae three-jointed and tapered reguUirl}^ from base to tip; second 

 antennae biramose and turned down squarely across the frontal 

 margin, the exopod (ventral) very small and two-jointed. ]\Iouth- 

 tube wide and long, reaching the tips of the second antennae. First 

 maxillae three-partite, the outer ramus much smaller than the 

 others, the palp slender and tipped with a single seta. Second 

 maxillae short and stocky, entirely separate to the tips in tlie young 

 female, but more or less fused in the adults; bulla button-shaped. 



Maxillipeds large and standing out prominently from the head, 

 terminal claw stout, but only half the length of the basal joint, with 

 an accessory claw on the inner margin. 



Color (preserved material), a brownish-yellow. 



Cephalothorax, 4.5 mm. long, 1 mm. wide. Trunk, 5 mm. long, 

 without the posterior processes, 3.25 mm. wide, 3 mm. thick. Egg 

 strings, G. mm. long, 1.40 mm. in diameter. 



Specific characters of male. — Cephalothorax at an angle of 45° with 

 the axis of the trunk; head covered with a dorsal carapace; waist only 

 a groove dorsally; trunk spindle-shaped and curved so that the 

 conical anal laminae point ventrally. 



First antennae slender and three-jointed; endojjod of second pair 

 bent over backward nearly at right angles, exopod ending in a chela. 

 First maxillae like those of the female; second maxillae slender and 

 very much longer than the maxilhpeds; the latter triangular and 

 rather small, but armed with a powerful claw. 



Color (preserved material), yellowish-white. 



Total length, 1.15 mm. Greatest diameter, 0.5 mm. 



(pinguis, stocky or plump.) 



