10 



CRUSTACEA 



maxillipedes of masticatory functions. Thus in the Decapoda 

 the first maxillipede is decidedly foliaceous owing to the expanded 



OU^C^'-' *' 



dp 



/^<^f\ 



L&. 



G 



FIG. 1. Appendages of Crustacea (A-G) and Triloliita (H). A, First maxillipede of 

 Astacus ; B, second maxilla of Astai-us ; C, second walking-leg of Astacus ; D, 

 thoracic liml> of Ilrniir/n'/ixs ; E, first maxillipede of Mjjsis ; F, first maxillipede of 

 <;,i<itj>i>iilntit>i!<i ; G, thoracic limb of Nebalia ; H, thoracic limb of Tr'un-Hi n's. 

 bp, Basipodite ; br, bract ; cp, carpopodite ; cxp, coxopodite ; cx.s, coxopoditic 

 setae ; dp, dactylopodite ; end, endopodite ; ep, epipodite ; ex, exopodite ; iji, 

 ischiojiodite ; mp, meropodite ; pp, propoclite ; 1-6, the six endites. 



" gnathobases " (Fig. 1, A, bp, c^p], and the second maxilli- 

 pedes are flattened, with their basal joints somewhat expanded 

 and furnished with biting hairs ; but in the " Schizopoda " 



