538 CRUSTACEA. 



Paracrangon- echinatus. 



Rostrum elongatum, porrectum, apice bidentatum, dorso unidentatum, 

 juxta basin infra unispinosum, spina longd porrectd. Oarapax mul- 

 tispinosus, medio dorso inceque A-dentatus, utrinque 5-!-spinosus. 

 Abdomen superne partim carinatum, superficie paulo scalptum, late- 

 ribus acutis. Manus elongata, digito immobili longo et gracillimo. 

 Pedes iti frtiquefere nudi, subwqui. 



Beak elongate, obliquely porrect, bidentate at apex, uni-dentate above 

 near middle, at base below in front a long curved spine. Carapax 

 multispinous, along middle of back unequally four-toothed, either side 

 5-7-spinous. Abdomen above partly keeled, somewhat sculptured, 

 sides acute. Hand elongate, immoveable finger long and very 

 slender. Fourth and fifth pairs of feet nearly naked subequal. 



Plate 33, fig. 6 a, animal, natural size ; b, under view, showing 

 natural position of first, third, and fourth pairs of legs, the second 

 pair being obsolete ; c, upper view of carapax ; d, profile of penult 

 abdominal segment in vertical view ; e, mandible ; /, g, extremity of 

 mandible, different views; Ji, second maxilliped; i, outer maxilliped. 



Puget's Sound, Oregon, obtained by dredging. 



Length of body, one and three-fourths inches. Length of beak 

 half as long as carapax, or rather longer than the line of it along the 

 back. The exterior maxillipeds are very slender and short hairy. 

 The fourth abdominal segment has a tooth and inside of it an eniar- 

 gination either side of middle, and the fifth is nearly similar. 



Subfamily LYSMATIK3E. 



NlKA HAWAIENSIS. 



Rostrum brevissime triangulatum, ocidis midto brevius, latius quam 

 longum. Squama antennarum externarum basi internarum parce 



