Faxon, Lucifer. 115 



antennae. The flagellum is apparently about as 

 long as the flagellum of the first pair. The 

 second antennae bear at their base, externally, an 

 " antennal scale," (Figure 1, c/,) which is fringed 

 with numerous setae, and equals the eye- stalks 

 in length. 



The mouth is bounded in front by a large 

 labrum, (Figure 1, e\ Figure 2, a,) then follow 

 a pair of mandibles, (Figure 2, b,) and a bilobed 

 metastoma. (Figure 2, c.) The first maxillae 

 consist of a small setiferous inner lobe, (Figure 

 2, d",) a larger outer lobe (Figure 2, <?',) also armed 

 with setae, and a palpus. (Figure 2, d'".) The 

 second maxillae (Figure 2, e\) possess a " sca- 

 phognathite," (Figure 2, <f,) but their structure 

 was not made out in detail. The first maxilli- 

 peds (Figure 2, /,) are two-jointed, the terminal 

 segment beset with setae on its inner border. 



The second maxillipeds (Figure 1, /', Figure 2, 

 g,) are made up of six segments, the three distal 

 bent back upon the preceding ones. All the seg- 

 ments of this appendage and the four following 

 pairs bear scattered setae. 



The four following pairs of appendages (third 

 maxillipeds and first, second and third "cleca- 

 podal" legs,) are bent forward. The second pair 

 is the shortest, next in length comes the first pair, 

 next the third, the last being the longest, and 

 furnished with a minute claw at the extremity. 



