C A RIDE A. 537 



rind medid (vel primd) bispinosd, 2dd unispinosd, brevi, Stid nudd, 

 4:td unispinosd, brevi. Abdomen Iceve, inerme, Manus nuda. Pedes 

 2di Stiis vix breviores, 4ti Clique paulo hirsuti, 5tis minoribus. Max- 

 illipedes externi utrinque valde ciliati. Segmentum caudale apice 

 sitbacutum et quatuor setts instructum. 



Beak very short and rounded. Carapax in part seven-carinate, 

 middle carina bispinous, second, or next either side, with one spine 

 anteriorly, third naked, fourth with one spine and short. Abdo- 

 men smooth, unarmed. Hand naked, thumb short. Second pair 

 of feet hardly shorter than third, fourth and fifth somewhat hirsute, 

 the last smaller. Outer maxillipeds long ciliate. Caudal segment 

 subacute at apex, and having four slender setae. 



Plate 33, fig. 5 a, animal, natural size ; b, extremity of caudal seg- 

 ment. 



Puget's Sound. 



Length of body, one inch and ten lines ; of carapax, six lines. The 

 nagellum of the outer antennaa is a little uneven, with short hairs. 

 The extremity of the abdomen is short triangulate at apex. The 

 spines of the carapax are nearly parallel with its surface. 



GENUS PARACRANGON. 



Crangoni similis. Pedes 2di omnino obsoleti, 4ti Clique acuminati, gres- 

 sorii. Oculi liberi. 



Near Crangon. Second pair of feet wholly obsolete, fourth and fifth 

 pairs acuminate, gressorial. Eyes free. 



The only species of this genus is from Puget's Sound, and is rough 

 with spines, besides having a long, reflexed beak, and an inflexed 

 abdomen. The form is very much like that of an Hippolyte. There 

 are eight specimens in the collections, and all agree in having the 

 second pair of legs obsolete. 



135 



