244 AMPniPODA NORMALIA. 



ns the first, but more slcnflor ; thirrl small. Inferior antennfe 

 three-fourths as long as the superior, having the peduncle nearly 

 as long again as the peduncle of the superior ; flagellura scarcely 

 longer than the last joint of the peduncle. First paii- of gnatho- 

 poda ha-s-ing the propodos ovate, palm short, convex, not oblique, 

 defined by an imperfect obtuse angle : second pair having the 

 propodos long-ovate, palm continuous -with the inferior margin, 

 imperfectly defined, having a tubercle in the middle. Third pair 

 of pereiopoda short, two posterior pairs a little longer, all three 

 ha%dng the dactyla reversed. Posterior pair of pleopoda extending 

 a little beyond the preceding. 

 Length ^ths of an inch. 



Hah. Coast of Chili {Gay). 



22. AmpMthoe Gaudichaudii. 

 Amphithoe Gaudichaudii, Edwards, Hist, des Cnist. iii. p. 31. 

 " "Without a rostnim. Eyes circular. Superior antennae much longer 

 than the inferior ; peduncle having the second joint nearly as long 

 as the fii'st ; third very short, and scarcely reaching beyond the 

 extremity of the penultimate joint of the peduncle of the inferior. 

 Inferior antennae having the flagellum scarcely longer than the 

 penultimate joint of the peduncle. First pair of gnathopoda having 

 the propodos elongate, palm straight, defined by a right angle with 

 the inferior margin. Second pair of gnathopoda having the propodos 

 of nearly the same form as, but a little larger than, the fii'st pair. 

 Basa of the third and fourth pairs of pereiopoda oval (instead of 

 nearly linear as usual) ; bases of the last pair of pereiopoda round 

 and dilated superiorl}', tapering to the distal extremity, and without 

 any distinguishable serrature. Posterior pair of pleopoda short, 

 having the rami veiy short, almost rudimentary (not being more 

 than half the length of the peduncle). Telson triangular, apex 

 obtuse. 



" Hah. Taken in the sea near the Brazils." — Edwards. 



23. AmpMthoe pygmaea. 



Amphithoe pygmaea, Liljeborg, Of vers, af Konql. Vet. Akad. Forhandl. 

 1852, p. 9. 



Bruzelius, Skand. Amph. Gamm. p. 32. 



" Male. — Body thick. Cephalon without a rostrum. Eyes small, 

 round, black. Coxae large. Antennae rather large, having the lower 

 margin hirsute : inferior pair longer than the superior, their pe- 

 duncles nearly equal, having the ultimate and penultimate joints 



