April iS»9.] 



PSYCHE. 



347 



5, tnx) are composed of a conspicuous 

 maxillar lobe, which is broad and plate- 

 like, with margins dorsal and ventral, 

 and which is about as long as the 

 labium, and of a long 4-segmented 

 palpus which bears many scales. The 

 labium (fig. 5, //) is short, broad, com- 

 posed of a small, strongly chitinized, 

 basal sclerite, and two large, fleshy, 

 terminal lobes, the paraglossae, concave 

 on their inner faces. The hypopharynx 

 (fig. 5, hyp) is broad at base, tapering 

 quickly to a sharp point anteriorly and 

 is fringed with long strong hairs. 



Fig. 5, Mouthpai-ts of Psyc/ioda sp ; lb 

 labrum-epipharnvx, mx maxilla, mx. I max- 

 illar lobe, tux. p maxillar palpus, //' labium, 

 /^ paraglossa, hyp hypopharynx. 



Perkoma sp. The mouthparts of 

 Pericoma are essentially like those of 

 Psychoda. The maxillar lobes are broad 

 delicate, plate-like. The hypopharnyx 

 is fringed with long hairs. The labial 

 lobes bear many short, strong, socketed 

 hairs. 



I have not been able to examine 



Phkhotomus whose females, according 

 to Becker, possess piercing mouthparts, 

 with long, strong, mandibles finely 

 dentate along the inner margin, and 

 with maxillar lobes also long, well- 

 chitinized and with truncate distal 

 margin with strong dentation. All of 

 the mouthparts of Phkbototnus are long 

 and slender, while those of Psychoda 

 and Perkoma are short and broad. 



Cecidomyidae. 



Caiocha sp. (two species studied) . 

 The mouthparts of Caiocha (fig. 6) 

 consist of labrum-epipharynx (fig. 6, 

 /. ep) maxillae (fig. 5 m.x) which are 

 represented by long 5-segmented palpi 

 only, no maxillar lobe being present, 

 and a short broad labium (fig. 6 //') 



Fig. 6, Mouthparts of Catocha sp ; /. ep 

 labium-epiphar_ynx, mx maxilla, //' labium, 

 pg paraglossa, gl glossa. 



with lateral paraglossae and fused 

 glossae. I was unable to find a hypo- 

 pharynx., which, however, is probably 



