114 



DK. J. D. F. GILCHRIST ON LARVAL AND 



commonly regarded as the second segment o£ the protopodite. The spines 

 at the ends o£ these segments of the protopodite are very well developed ; 

 on the first there are about half a dozen, long and rather slender, with 



Fio-. 28. 



I 



Prof. 2 



First maxilla of Phyllosoma of 35 mm. 



lateral projection. A few short spines are inserted near the base. The 

 second is provided with three well-developed spines^ with lateral projections 

 and one or two small spines occur at their bases. 



The second maxilla (fig. 29) now shows four rudiments situated at its 

 base, representing what are to become the endopodite and the three endites 

 of the protopodite of the adult. 



HhQ first maxillipede (fig. 30) is furnished with a prominent exopodite and 

 an epipodite. The differentiation of the endopodite and protopodite appears 

 under the cuticle, but there is no division of the latter in two sections. 



The second maxilUpede consists of five segments : the first is not provided 

 with a spine, but has the rudiments of an epipodite ; the second has, about 

 its middle, a similar vesicular structure which corresponds to the exopodite 

 of the other appendages. The distal end of the penultimate segment is 

 provided with two strong bent spines, between which the short terminal 

 joint with its strong spine can be bent. 



