Fi,'. LV. — C. (Siphonosira) spinifcra n. sp. — i:). First eiidile of the maxilla, o- 312 y. |',_ Sorond ondite of the 



maxilla; in a position opposite to that of the first and third endites; $; 312 X. 15. Third endite of the ma>ulla. <:■. 



'AVI X. I'j. Distal part of the endopodite of the left maxilla, seen from inside, ?; 480 X. 17. Seventh limb, $; 312 x. 



18. Distal part of the seventh limb, all the rleaninp l>ristles broken: from a larva in the last stage; .'iSO X. 



