92 BULLETIN 138, UNITED STATES NATIONAL MUSEUM 



is of considerable length, being extended 3 mm. beyond curve of 

 carapace and the tip broken off. Behind the tooth a fine, raised, 

 granulated rim runs in a slightly curved line to the posterior margin; 

 in front of it is a larger tooth curved forward and inward, and, 

 similar to the orbital tooth. Anterior margin of carapace incom-j 

 plete; outer orbital tooth wider than that between the two superior! 

 sinuses of the orbit, which in turn is about one-fourth as wide as^^ 

 the distance to the corresponding tooth on the opposite side. I 



On the ventral surface of the carapace the granules are anteriorly' 

 fine and rather dense; arranged more or less in oblique lines; further, 

 back, they are larger and more elongate and arranged in short, trans-: 

 verse rows of from four to six granules. Only fragments of the 

 outer maxillipeds remain. The first sternite (pi. 23, fig. 1) is similar 1 

 in shape to that of R. ranina^^ but wider. Of the chelipeds onlyi 

 the right one is shown on the smaller specimen as far as the end 

 of the merus (pi. 23, fig. 3). ; 



Variation. — In the larger type-specimen, the upper surface ij!i 

 smooth except on anterior half but in the Koitlah specimens it is 

 granulate posteriorly, the granules single, while the center of thr 

 carapace, so far as can be observed, is punctate with elongate, 

 impressions. 



Measurements. — Larger specimen (Koitlah Point), width of cara 

 pace just behind the posterior of the lateral spines 38 mm.; posterior 

 width (estimated) 15 "mm.; length (estimated) 45.6 mm. Type, 4^ , 

 by 60 mm. 



Occurrence. — Washington: Conglomerate sea cliffs at Koitlal 

 Point, west of Neah Bay; lower (?) Oligocene; Stanford Universit}, 

 (N. Pac. 167) ; two specimens showing the greater part of the dorsa';' 

 surface and certain portions of the ventral surface and fragments o1 

 appendages. ■ 



Genus RANINOIDES Milne Edwards H 



Ranlnoides Milne Edwards, Hist. Nat. Crust., vol. 2, 1837, p. 196; type, 

 R. locvis (Latreille). 



Sternal plastron broad between bases of feet of first, second anc i 

 third pairs, narrow between those of fourth and fifth pairs. Cara 

 pace about twice as long as wide; surface almost horizontal longi. 

 tudinally but curved transversely. Fronto-orbital border a littL 

 narrower than middle portion of carapace and strongly dentate. A * 

 lateral marginal tooth well forward. 



Eocene; Oligocene; Miocene; Recent. 



This genus, described from a Recent species, is here enriched b^ , 

 seven species extending from the Eocene to the Miocene. Zittel ^| 



"* Cancer raninns Linnaeus, Syst. Nat., ed. 10, 1758, p. 625. 



«» Textbook of Palaeontology, London, vol. 1, 1900, p. 665 ; ed. 2, vol. 1, 1913, p. 765. 



« 



