34 PROCEEDINGS OF THE AMERICAN ACADEMY 



Long. xV- — Hah. in mari Atlantico, lat. aust. 40° 35', long. occ. 

 60°, prope " Rio Negro." — Lect. die 24 Jan., 1839. 



25. PoNTELLA sPEciosA. — Caput discretum, subtriangulatum', fronte 

 obtusum. Cephalothorax 5-7-articulalus, postice acutus aut obtusius- 

 culus. Oculi superiores remoti, inferiores mediocres. Antennae anticse 

 cephalothoracis longitudine, fere rectse, prope 110° divaricatse, 21 -22- 

 articulatae ; setis brevibus, apicali antica et penultima postica longiori- 

 bus, articulum paulo superantibus. Styli caudales oblongi. Antenna 

 dextra maris pauci-articulata, articulo quinto late ovato. Pes posticus 

 dexter maris crassus, manu lata apice truueata et obtuse dentata, pol- 

 lice e basi manus producto, elongato, spiniformi, digito prselongo, incur- 

 vato. l^Maris cephalothorax 6-articulatus, et abdomen 4-articulatum ; 

 color viridis, dorso argenteus. FemincR cephalothorax 7-articulatus, 

 segmento ultimo brevissimo ; abdomen 3-articulatum ; color ochreus, 

 medio Isete ruber.] 



Long. Jj", — Hob. prope fretum Sundse ; lect. die 4 Mar., 1842. 



26. PoNTELLA PRiNCEPS. — FemiucB : Caput discretum, subtriangu- 

 latum, fronte obtusiusculum. Cephalothorax 6-articulatum, postice lon- 

 ge acutus, articulis tribus posticis subasquis. Oculi superiores remoti ; 

 inferiores mediocres parce elongati. Antennse anticce cephalothorace 

 parce breviores, rectiusculse, ferme 110° divaricatas, setis brevibus, api- 

 cali antica longiore. Styli caudales perbreves. [Cyanea, dorso mar- 

 garitacea. Abdomen 4-articulatum, distortum.] 



Long. ^". — Hah. in mari Pacifico, prope insulam " Tongatabu " ; 

 lect. die 29 Mar., 1840. 



27. PoNTELLA FERA. — Caput vix discretum, subtriangulatum, fronte 

 rotundatum. Cephalothorax 6 - 7-articulatus, postice obtusus aut obtusi- 

 usculus, segmento postico brevissimo. Oculi superiores remoti, inferi 

 ores grandes, non elongati. Antennse anticae vix cephalothoracis Ion 

 gitudine, ferme 21-articulatae, 130° divaricatse, setis prope basin sub 

 longis, confertis, aliis brevibus, apicali antica et penultima postica ar 

 ticulo vix longiore. Styli caudales elongati, divaricati. Antenna an 

 tica dextra maris subteres 11 - 12-articulata, articulo secundo longo 

 tertio brevissimo, quarto sub quintum producto, proximo spinam inver 

 sam ferente. Pes posticus dexter maris tenuis, manu subcylindrica 

 digito tenuissimo, ad apicem spatulato et concavo. 



Long. -j-y. — Hah. in mari Pacifico, lat. aust. 11° - 12° 45', long, 

 occ. 170° - 171° ; lect. diebus 1, 5 Feb., 1840. 



