STALK-EYED CRUSTACEA 119 



d. Antennae excluded from the orbit, whose interior 

 hiatus is closed. 



20. Carapace but little broader than long, with the 

 antero-lateral borders much shorter than the postero- 

 lateral. Fingers acute or subacute. — {Eriphia.) 



jseJ^-— 



^-.-n--^ 



Eriphia. Doinecia. 



21. Carapace wider than long. The fronto-orbital 

 border occupies almost the whole breadth of the carapace. 

 Fingers acute. — {Doniecia?) 



A. Endostoine ivitJioiit distinct longitudinal ridges defin- 

 ing the openings of the efferent brancJiial channels. 



a. Fingers of the first pair of legs acute or subacute : — 



I. Carpilius. 



Carpilius . Leach, Desmarest, Milne Edwards. 

 Cancer . . Linne, Fabricius, Latreille. 



Carapace convex, without dorsal tubercles or sulci 

 defining the regions ; with the antero-lateral margins 

 regularly arcuated and entire, terminating in a blunt 

 lobe or tooth (the lateral epibranchial tooth) and slightly 

 longer than the postero-lateral margins, which are nearly 

 straight. The front is rather narrow, deflexed, and is 

 divided into three lobes, the median being prominent, 

 with the anterior margin slightly concave, and the lateral 

 ones rounded and but little developed. The orbits are 

 small, without marginal fissures, and with a rounded lobe or 



