MAIOIDEA. 133 



EPIALTUS PRODUCTUS, Randall. 

 Puget's Sound, and Upper California. 

 Plate 6, fig. 2 a, female, natural size ; b, abdomen. 



This species has the exterior maxillipeds and the adjoining parts 

 pubescent. The emargination of the beak is set with setse, and other 

 setse tip the tooth anterior to the eyes, and the margin anterior to 

 this tooth. There are also two series of curled setae on the upper 

 surface of the beak. The female abdomen is oblong elliptical. The 

 last (seventh) segment is transverse triangular, abruptly a little nar- 

 rower than the preceding, and the apex is obtuse. The cutting edges 

 of the fingers are denticulate, with twelve to fifteen teeth. The 

 breadth across the middle of the carapax, between the apices of the 

 medio-lateral teeth, is equal to the distance from the posterior margin 

 to a line between the eyes; and the breadth immediately anterior 

 to these medio-lateral teeth, equals the distance from the posterior 

 margin to a line between the antero-lateral teeth. The thoracic 

 region bears two minute or obsolescent tubercles. 



E. productus, J. W. RANDALL, Jour. Acad. Nat. Sci., viii. 110. 



HUENIA SIMPLEX. 



Maris : Carapax Icevis, valde elongattts, angustd subtriangularis, lateri- 

 bus antero-lateralibus longis, aniicd convergentibus, fere rectis et integris, 

 in latera rostri rectb productis, dente prceorbitali nullo; rostro oblongo, 

 valde obtuso ; angulo postero-laterali subacuto; margine postico integro; 

 superficie ^-tuberculata (regione mediand 3-tuberculatd, cardiacd \-tu- 

 berculata). Pedes antici validi, manu crassd, digitis latissime hianti- 

 bus; articulus pediim 8 posticorum penultimus svbcylindricus. 



Male : Carapax smooth, much elongate, narrow subtriangular, having 

 four low tubercles, antero-lateral sides long, converging forward 

 nearly straight and entire, produced directly into the sides of the 

 beak, no prseorbital tooth; beak oblong, obtuse; postero-lateral 



34 



