382 



CRUSTACEA. 



A very little short pubescence on some of the joints of the legs; fingers 

 very short pubescent, and hand very slightly so, more so on inner 

 surface. Front faint pubescent. 



P.faba, Dana, Proc. Acad. Nat. Sci. PhilacL, 1851, v, 253, 



Genus FABIA. 



Pinnotherae affirm. Orbita marginc superiore fissa ; carapax pone 

 orbitas sutura longitudinali instructus aream mediauam includem. 



Near Pinnothera. Carapax with a longitudinal suture behind the 

 orbits enclosing between them the median area. 



The slender subequal legs and general form are the same as in 

 Pinnothera. The area included by the post-orbital suture on the back 

 of the carapax, corresponds properly to the normal median region, 

 together with the frontal, which is not separated. The suture — like 

 the depression limiting the median region — begins in the margin of 

 either orbit, and extends back to the middle of the carapax, in which 

 part the two from either side meet. Unlike the depression in other 

 Crustacea, the suture has sometimes a depth and distinctness, which 

 seems almost like a division of the carapax. The upper margin of 

 the orbit in the Pinnothera) is entire; while in the Fabia it is cut 

 through by the termination of this suture. In this suture we see a 

 transition step towards the deep incisions of the front, from which the 

 eyes proceed in Xcnopldhalmus of White. 



Fabia subquadrata. 



Carapax (feminae) subquadratus, antice rotundatus, parcc lafior quam 

 longus, nudus, nitidns. MaxUlipedes externi Midi, valdt obliqui 

 Ocidi minimi Suturce postfrontales fen paralkto. Bides antici 

 feminae sat tenues, maim elongatd, infra 2 lineis pubescent ibus (lined 

 una usque ad digiti extremitatein produetd) ornatd. Pedes 8 pout id 

 sat graciles, articulo Stio supra partim \ jxia besce nte, 5to infra puhescente, 

 tarso brevi, dimidii articidi bti longitudijte, vncinato. 



