2154 CRUSTACEA. 



probably wanting) ; b, posterior thoracic legs, enlarged to corre- 

 spond. 



Collected off the Cape of Good Hope, April 12, 1842, latitude 35° 

 20' south, longitude 20° east. 



Length, one-tenth of an inch. Colour, grass-green; head, deep 

 blue in front. The specimen, although perfect in every other respect, 

 appears to have the last joint of the anterior antennae wanting. The 

 posterior seta of the joint, which was the terminal (supposed to be the 

 penult), is a little longer than the joint, the anterior quite short; the 

 posterior of the next preceding is about as long as the joint, and the 

 anterior very minute. The second joint of the antenna is oblong, and 

 has a few curving setae, the longest of which is hardly twice the dia- 

 meter of the joint in length. The shorter branch of the posterior 

 antennae is very small, not exceeding a sixth the length of the other. 

 The longer branch is long, and the setae extend back as far as the 

 sixth cephalothoracic segment. The posterior angles of the cephalo- 

 thorax are long acute, distant, and somewhat divergent. 



PONTELLINA REGALIS. 



Feminae : — Grassissima. Frons rotundatus. Cephalothorax 5-6-aWi- 

 culatus, angulis posticis elongate acutis, capite discrete, brevi. Oculi 

 superiores remoti, inferiores parvi. Antennas anticce cephalotJwrace 

 breviores, 100°-110° divaricatce, duplo leviter curvatce, setis brevibus, 

 subapicalibus articulo non longioribus, apicali anticd triplo longiore, 

 aliis apicalibus perbrevibus. Ramus major antennarum posticarum 

 quadruplo longior. Styli caudales brevissimi. [Abdomen 2-articu- 

 latum, segmento secundo brevi.'] 



Female: — Yery stout. Front rounded. Cephalothorax five- to six- 

 jointed, posterior angles long acute and remote, head separate, 

 short, posterior segments three. Superior eyes remote, inferior small. 

 Anterior antennae shorter than the cephalothorax, divergent 100° 

 or 110°, slightly curved, setae short, subapical not longer than the 

 joint, anterior apical nearly three times longer, the other apical 

 very short. Short branch of posterior antennae minute, hardly 



