328 



PSYCHE. 



[March, iSg^. 



The maxillae (fig. i A, mx) consist 

 of a single short, tapering, blade-like, 

 thin but well chitinized maxillar lobe 

 {mx. 1) and a long, slender, 5-segmented 

 palpus {m.x). Lobe and palpus arise 

 from a basal sclerite, which shows no 

 differentiation into cardo and stipes, 

 and may be taken to represent these 

 two sclerites completely fused. 



The labium (fig. i A, //) consists of 

 a strong elongate basal sclerite which 

 presents indications of a line of fusion 

 of sub-mentuni and mentuni, and a pair 



li 







f)\ 



c 



Fig. I, A, Mouthparts of Lipoiieitra .' sp., 

 ?; /. cp labriim-epipharvnx, md mandible, 

 mx. niaxill.ae, j«.v. / maxillar lobe, mx. f 

 maxillar palpus, li labium, fg paraglossa, 

 hyp hvpopharynx; B, Cross section near the 

 base of the mouthparts of Blcpliarocera cap- 

 itata 5; C, Cross section near the tip of 

 mouthparts of Blep/tarocera capitata ? ; 

 lettering in B and C same as in A, with 

 addition in C of gl glossa, and substitution 

 of lb for /. ep (= labrum-epipharynx). 



of free fleshy terminal lobes, the para- 

 glossae {pg) (see account of Blepha- 

 rocera capitata) . These terminal lobes 



have no pseudo-tracheae. There are 

 no palpi. 



The hypopharyitx (fig. 1 A, hyp') is as 

 long as or slightly longer than the la- 

 brum-epipharynx, is narrower, and 

 although thin, well-chitinized. It lies 

 along the dorsal surface of the labiimi 

 underneath the labrum-epipharynx. 



As shown in figure i A, the mouth- 

 parts, excepting the mandibles, are car- 

 ried somewhat forward by the extension 

 of their bases or of the frontal part of 

 the head-capsule. The various parts of 

 the mouth dissect apart readily. 



Blepltarocera capitata. The mouth- 

 parts of the female resemble the 

 mouthparts of the previously de- 

 scribed member of the family with, 

 however, certain interesting difi'er- 

 ences in the labium. The basal 

 sclerite of the labium terminates 

 proximally in a strongly chitinized 

 sub-crescentic portion, much like 

 the sub-mentum of certain orthop- 

 terous forms. There are three in- 

 dependent fat least, distally) ter- 

 minal lobes instead of two, the outer 

 two of which may be taken to be the 

 paraglossae, and the inner median one 

 the fused glossae or inner lobes. Series 

 of cross sections of the mouthparts in 

 situ show well the general relation of 

 the parts (fig. i B and C), and show 

 that the terminal lobes of the labium are 

 distinct distally, and that the hypo- 

 pharynx is traversed from base to tip by 

 a cylindrical channel. This is of course 

 the eft'erent duct of the salivary glands. 

 The sections show plainly the origin 



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