ISOrODi^ OF NORTH AMERICA. 151 



The maxillipeds are almost as in E. antUlensis. 



The segments of the thorax are ahnost as in E. antUlensis; the post- 

 maroinal furrow is well dotinod only in tlie seventh segment; in the 

 fourth, tifth. and sixth seomonts it is somewhat distinct, foi-mod prin- 

 cipall}' of points. 



The epimera are almost as in E. antUlensix. 



The tirst five segments of the abdomen are a little more smoothly 

 formed than in E. antUlensis. 



The last segment of the abdomen is short, about two-fifths wider 

 than long, posteriorly widely rounded, not furnished with s])ines, but 

 furnished with a deep and rather wide median incision, the lateral 

 margin is entire; the dorsal surface is rather convex, not furnished 

 with densel}' setose areas, ))ut ornament(^d with very short, scattered 

 hairs near the lateral margins, and furnished near the base with a 

 median excavation which has a carina in a rather short fundus, and 

 ornamented with acute tubercles rather close together and rather 

 small, and with lateral tubercles somewhat smaller than in E. antUlensis 

 and not furcate. 



The uropoda extend some distance be^'ond the abdomen and are fur- 

 nished with hairs as in E. antUlensis; the branches are equal in length; 

 the inner branch is rather wide, with the posterior part of the inner 

 margin somewhat curved outward, and furnished with a few spines; 

 the apex is a little produced and acute. 



The peduncle has the inner angle extending a little beyond a third 

 part of the inner branch. The color is brownish yellow.^' 



« The above description is adapted from the following one of Hansen's: 



Diagn. Clypeus, supinus visus, ex parte perspicuus, labrum obtectum. Anten- 

 nularnm articulus basalis nonnihil incrassatus, pronus et supinus visus angustus. 

 Segmenta 5 anteriora caud;e fere ut in Cor. antUlend. tegmentum ultimum caudse 

 breve, postice late rotundatum et iiicisura media profunda, sat lata, instructum, mar- 

 gijie laterali non inoiso, dorso ad basin nodis et nodulis ornato, areis spisse setosis 

 nuUis. Uropoda caudam longe superantia, structura fere solita. Long. 11 mm. 



Corpus fere triplo longius (piam latins; truncus cauda ali<iuanto longior. 



Frons margine subrecto, processu medio infiexo, fere evanido. 



Oculi nigri, permagni, superficiem totam capitis pneter aream minorem mediam 

 ad marginem posteriorem occupantes; oc^elli permagni, semiglobosi, ut in C. Warm- 

 ingil formati. 



Lamina frontalis fere triplo longior (|uam latior, a ])asi ad mediam angustata, per 

 longitudinem majorem excavata, parte apicali subplana, ante rotundata. Lamina a 

 latere visa excurvata et jirope apicem incurva. 



Clypeus supinus visus ex parte perspicuus; labrum oliteetmn. 



Antennula' eireiter apieem articuli penultimi i)edunculi antennarum attingentes; 

 pedunculus articulo primo nonnihil incrassato, prono et supino viso tamen angusto, 

 ai'ticulo secundo aliquanto breviore quam j)rimo, graciliore; tlagellum pednnculo 

 aliquanto brevier, c. 8-articu latum. 



Antenme structura solita. Mandibuhe magn;e, robustfe, pars distalis mandibuke 

 sinistra' sat alte eminens, ut in speeiebus sequentibus conum singulum formans. 



Maxillipeds fere ut in C. antUlensi. 



tegmenta trunci fere ut in C. antUlensi; stria postmargiualis solum in segmento 



