276 Scientific Intelligence. 



III. Zoology. 





1. Conspectus Crustaceorum qua in Orbis Terr arum Circumnaviga- 

 tione, Carolo Wilkes e Classe Reipublica Fcederatce Duce, lexit et de- 

 scripsit Jacobus D. Dana — (Proceedings of the American Academy 

 of Arts and Sciences, Boston, May 4, 1847, vol, i, p. 150-154, and 

 Nov. 8, 1849, vol. ii, pp. 9-61.)— this Conspectus includes descrip- 

 tions of 183 new species of Entomostraca, collected by Mr. James D. 

 Dana during the cruise of the Exploring Expedition. We here cite the 

 descriptions of the genera and families introduced, as they contain some 

 modifications of those received, and mention only the names of the new 

 species included in the Conspectus under each genus. As elsewhere 

 stated, the full Report on the Crustacea of the Expedition is in course 

 of preparation and will be illustrated by drawings of these and the other 

 new species collected. 



Ordo 2. ENTOMOSTRACA. 

 Subordo 1. GNATHOSTOMATA.* 



Tribus I.— CRUSTACEA CYCLOPACEA (vel Copepoda).f 



Familia I. Cyclopidje. 



Oculi duo simplices tantum. Palpi mandibularum maxillarumque 

 breves aut obsoleti. Sacculi ovigeri duo. 



Genus I. Cyclops. — Antenna maris anticce subcheliformes aut ar- 

 ticulo geniculante instructs. 



Sp. C. brasiliensis, curticaudus, pubescens, MacLeayi, vitiensis. 



* See this Journal, 2nd Ser., i, 225. 



f Cyclopaceoruni membra sunt : — 



Cephalothorax 4-7-articulatus. Abdomen 1-6-articulatum, carapace non tectum. 



Fro7is saepissimi rostrata, rostro aut simplice, aut furcate, aut transversim eniar- 

 ginato, aut appendicibus instructo. 



Oculi duo simplices, pigmento aut connati aut disjuncti ; quoque in quibusdam 

 oculi duo coaliti sub capite insistentes ; aliis, oculi maximo lenticulo prolato et cornea 

 lat£ oblata construct!. 



Antennae anticce 4— 2 8 -articulate, aut simplices, aut append iculatae ; posticw 2-5-ar- 

 ticulatae et saepe ramum ferentes, aliis ad apicem setigerae, aliis subcheliformes. 



Mand'ibtdie ad apicem dentatse, saepiu- pnlpigerae: — membra cephalothoracis ad 

 normam quarta ; itaque breviter denominata ct. iv. 



Maxillce duse (ct. v.) setosae ; saepe palpigerae, palpo sive parvulo et vix discernendo, 

 sive setas diffusas ferente. 



Maxillipedes (vel Maxillae, ct. vi.) duo, aliis parvi et parcius setigeri, aliis crassiores 

 et valde setigeri. 



Pedes antici (ct. vii) duo simplices, aut obsolescentes aut elongati, aliis setigeri, 

 aliis subche I i formes. 



Pedes biremes decern (ct. viii, ix, x, xi, xii) ; octo anteriores sfiepius natatorii, sea 

 duo antici interdum subprehensiles ; duo posteriores plurimum obsoleti aut parvuli; 

 in quibusdam masrulinis per^rarules et uno ambove preherwil- 



Abdominis ad basin pertinente8 ssepissime pedes spur it, sive obsolescente- ^ ve 

 oblongi et >«*tis armati; ad extremum, styli caudales duo, unusquisque 4-6 setisple- 

 rumque plum- in<tructus. 



Cephalothorace s«?p^ew-articulato, ad segmentum primum antennae quatuor perti- 

 nent ; ad secundum, mandibula, maxillae, et maxillipedes (ct. iv, v, vi) ; ad tertium, 



