CYCLOPOIDEA. 1203 



G-. 4. Sapphirina, Thompson.* — Cephalothorax depressus, interdum crassus, fronte 

 arcuato ; conspicilla sive frontalia sive inferiora. Sexus quoad antennas posticas 

 stylosque caudales similes, abdomineni pedesque anticos dissimiles. Maris: — 

 Abdomen thorace subito non angustius, 4-5-articulatum, appendicibus basalibus 

 carensj pedes antici digito elongato instructi. Feminse : — Abdomen thorace 

 subito angustius, 5-6-articulatum, appendices breves basales gerens ; pedes antici 

 digito brevi. [Mares saepe laete opalini aut fulgide metallini ; femince ssepius 

 incoloratae et plus minusve pellucidae, interdum opacae et indigoticse.] 



Subfam. 2. MIRACINiE. — Antennse posticse apice setigerse et non 

 monodactylse. Sacculus ovigerus unicus. 



<x. 1. Miracia, Dana.-f — Corpus subcylindricum, elongatum. Frons appendices 

 duas falciformes gerens ac in Setelld. Abdomen feminse (quoque an maris?) 

 6-articulatum. Antennae anticae appendiculatae. Pedes antici monodactyli, digito 

 tenui ; duo sequentes biramei, lateraliter paulo porrecti. Antennae anticse ac in 

 Setelld. Appendices quatuor abdominis basales elongate setigerae. 



Subfamily CORYCiEINiE. 



The organs of the mouth in this subfamily have been particularly 

 examined by the author in species of the genera Corycseus and Sap- 

 phirina, and are described in the remarks upon those genera. 



Genus CORYCJEUS, Dana. 



Cephalothorax crassus, non depressus, antice rotundatus et conspicilla 

 grandia fronte gerens, postice scepius acutus. Abdomen multo angus- 

 tius, pauci-articulatum, appendicibus basalibus car ens. Antennae pos- 

 tico3 monodactylo3, pedibusque anticis majores. Pedes antici quoad 

 sexus vix dissimiles, monodactyli, digito tenui confecti. Styli caudales 

 styliformes. 



* Thompson, Zool. Researches, p. 46, pi. 8, f. 2 ; Carcinium, Erichson and Bur- 

 meister, in Meyen's Obs. Zool., in Itin. circum Terram, &c, in Nova acta Cass. Leop. 

 Car. Nat. Cur., xvi. p. 156. D. 0. Gr. Costa has described a genus, which he calls 

 Edwardsia, in his " Cenni Zoologici," etc. (1834), which appears to be near Sapphirina, 

 if not identical with it. It has its brilliancy, a nine-jointed body, and several other cha- 

 racters of this genus. 



f Proc. Amer. Acad. Sci., ii. 46, 1849. 



