no.1766. STALK-EYED CRUSTACEA OF PERU RATHBUN. 543 



fingers dark with light tips, gaping in male, a large tooth at base of 

 dactyl. Legs narrow, hairy, dactyli elongate, with slender horny tips. 

 Width 6 to 14 mm. 



Oyster beds of Matapalo (near Capon), January 23, L908, one male; two females 



were taken from masses of sponge at the same place. 



Not before recorded from the west coast of America. 

 Distribution. — Peru. From Florida to Brazil; Bermudas. 



EURYPANOPEUS TRANSVERSUS (Stimpson). 



Panopeus transversus Stimpson, Ann. Lye. Nat. Hist. X. Y., vol. 7, 1860, p. 

 210.— Benedict and Rathbun, Proc. U. S. Nat. Mus., vol. 14, 1891, p. 3<J7, 

 pi. 22, fig. 2; pi. 24, fig. 9. 



Small. Carapace broadly oval, posterior half Hat, anterior half in- 

 clined downward to the margin; regions 

 indicated. Of the five normal teeth 

 of the lateral margin, the first two are 

 completely fused and form a truncate 

 lobe; next two teeth also lobiform; last 

 tooth dentiform, blunt; last three sin- 

 uses V-shaped. Front faintly four- 

 lobed. Chelipeds unequal; a stumpy 

 tooth at inner angle of wrist; fingers FlG - z.-eurypanopeus tea: 



. . , , ° p ,1 1 11 MALE, NATURAL SIZE. 



rather slender, those ol the larger chela 



of male narrowly gaping, the dactylus with a slightly enlarged tooth 

 at its base. Legs narrow, compressed. 

 Width IS to 20 mm. 



On the beach at Las Vacas, near Capon, January 23, 1908. Called "Pangoritas;" 

 in the belief of the fishermen, these are the females corresponding to Eriphia squumata, 

 male ! 



Not previously known from Peru. 



Distribution. — From Salvador, Central America, to Peru. 



EURYTIUM TRISTANI Rathbun. 



Plate 17. fig. I. 



Eurytiuni Iristuui Katuhun, Proc. Biol. See. Wash., vol. li), l!l()(i, p. 100. 



Carapace very convex from front to back, transverse, hexagonal: 

 surface very finely granulate, without ridges, regions fairly marked; 

 antero-lateral margin very short, cut into five teeth, including tooth 

 at outer angle of orbit, the lirsf two teeth partly fused, the others 

 strong, the fifth most acute; postero-lateral margins very long and 

 convex. Front about one-fourth as wide as carapace, with two 

 rounded lobes; orbits of good size, with three large sinuses below. 

 Chelipeds very unequal, heavy: arm with tubercles and a strong 

 tooth above; wrist with a strong inner tooth; lingers light colored, 



