C A R I D E A. 559 



BETiEUS TRUNCATUS. 



Frons truncatus, medio non emarginatus. Squama antennarum exter- 

 narum basi non longior ; spina externa brevis ; spina internarum 

 basalis prwlonga, articuli basales elongati, subwgid. Pedes antici 

 multo inaiqui, manu majore longd, sublineari, valde compressd, fere 

 Icevi, scabriculd, digitis longis, fere dimidii manus longitudine, mobili 

 terete. Pedes 2di Stiis sat longior es, carpo sat brevi, articulo carpi 

 lmo plus duplo longhre quam 2d.us, 2do 3tio 4:toque br embus. Arti^ 

 cuius pedum sequentium Stius omnino inermis. 



Front truncate, not at all emarginate at middle. Basal scale of outer 

 antennae about as long as base of either pair ; outer spine short ; 

 basal spine of inner pair very long, basal joints elongate, subequal. 

 Anterior feet much unequal, larger hand long, nearly linear, much 

 compressed, minutely scabrous but nearly smooth, fingers long, hardly 

 as long as half the hand, the upper terete; smaller hand linear. 

 Feet of second pair longer than third, carpus rather short, first 

 joint of carpus more than twice as long as second, second, third, and 

 fourth all short. Third joint of the following legs wholly un- 

 armed. 



Plate 35, fig. 10 a, animal, enlarged two diameters ; b, upper view 

 of front; c, smaller hand. 



Hermite Island, Fuegia, where it was dredged up in ten fathoms 

 water, Jan. 27, 1839. — Lieut. Case. 



Length, fifteen lines. Last joint of outer maxillipeds rather densely 

 pubescent, hairs not half as long as joint. All legs slender; carpus 

 and hand of second pair hardly longer than fourth, fifth, and sixth 

 joints of third pair, fourth joint of carpus shortest, third joint not 

 shorter than second. The three joints of the base of the inner an- 

 tennae are unusually long, and the second is a little the longest. The 

 lower margin of the hand is subtrenchant, and fine scabrous ; margins 

 of the arm also minutely scabrous. 



