2158 CRUSTACEA. 



the first smallest ; shorter branch of each two-jointed. Length, one- 

 tenth of an inch. Collected in the Atlantic, October 17, 1838, 

 latitude 7° north, longitude 23° 45' west. 



PONTELLINA STRENTJA. 



Maris : — Frons acutiusculus. Cephalothorax 5-ft-articulatus, angiilis 

 posticis elongate acutis, capite discrete. Oculi superiores remoti, inferiores 

 mediocres. Antennae anticce fere corporis longitudine, 80°-90° diva- 

 ricate?, 17 -18-articulatce, ad medium obsolete flexab, setis brevibus, 

 anticis apicalibus articulo duplo longioribm. Antenna [antfca dextra 

 12-li-articidata, articulo mediano subovato, apice antico acuto. 

 Ramus major antennarum posticarum fere triplo longior. Pes posticm 

 dexter crassiusculus, manu ellipticd, breviore quam carpus, digito 

 immobili tenuissimo, acvto, parce longiore, digito mobili rnediocri, 

 subulato, rectiusculo. Styli caudales breves. Styli caudales paulo 

 oblongi. \_Abdomen 5-articulatum.^ 



Male : — Front rather acute. Cephalothorax five- to six-jointed, poste- 

 rior angles long acute and remote, head separate, posterior segments 

 four, the last very short. Superior eyes distant, inferior of mode- 

 rate size. Anterior antennae about as long as the body, diverging 

 80° at base, and apical half about 90°, seventeen- to eighteen- 

 jointed, near middle a slight flexure ; setae short, the anterior apical 

 more than twice as long as the joint. Right antenna twelve- to 

 fourteen-jointed, a median joint broad subovate, with an angle on 

 the posterior side near base, and the anterior apex acute. Poste- 

 rior antennas having one branch nearly three times longer than the 

 other. Right posterior leg rather stout, hand oval, shorter than 

 the carpus, immoveable finger very slender, acute, sparingly the 

 longer, moveable finger of moderate size, subulate, nearly straight. 

 Caudal stylets a little oblong. [Abdomen five-jointed.] 



Plate 81, fig. 4 a, animal, enlarged; a', extremity of left antenna; 

 b, part of male antenna ; c, profile of head ; d, posterior feet. 



Collected at 4 h. a. m., April 2, 1841, in the Pacific, south of the 

 Kingsmills, latitude 3° south, longitude 175° east. 



