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maxillae and their palpi before it unites with the labium, as shown by tig. 14. 

 The apical four-fifths of the labium contains no other seta than the labrum-epipharynx, 

 as seen in fig. 12, which is a section at about the middle of the proboscis. At 

 the base of the labrum-epipharynx are inserted pharyngeal muscles similar to those 

 found in the female, and with similar insertions and origins, except that the 

 median muscle (fig. 15' pm') is not divided into three parts as in the female 

 (fig. 9, p')- 



The hypopharynx is, throughout its whole length, joined to the labium, and 

 thus necessarily pushes the maxillae, which would normally lay between it and 

 the labium, to one side. (See fig. 13, h and ?/u.'.) The hypopharynx shows, in 

 section (fig. 13-15 /*), the same chitinous rod through the middle as in the 

 females, but I was unable to detect any channel for saliva through this rod. 



The maxillae are very thin lamellae of transparent chitin, about one fifth 

 as long as the labium, and so delicate as to be easily overlooked. Altho as broad 

 at the base as is the tube of the epipharynx, they taper regularly from their 

 base to their fine tips. When the maxillary palpi are carefully pulled from the 

 head of the male Culea-, the maxillae usually remain attached to their base. 

 The attachment of the maxillae to the maxillary palpi is readily seen in sections 

 (fig. 13, mx and mp); that they are not mandibles is evident. 



The maxillary palpi are five-jointed, very hairy toward the tip, much longer 

 than they are in the female, and when at rest their basal portions cover the 

 labrum-epipharynx and maxillae in the sheath of the labium. 



The labium of the male Cidex is similar in general structure to that of the 

 female, if one considers it together with the hypopharynx. It is, however, 

 slenderer, more densely covered with scales, has a shallower groove for the 

 reception of the labrum-epipharynx, and has a joint near the middle. The 

 slenderness of the labium] in the male extends itself to the labellae. (Compare 

 fig. 4, lb with fig. 3, lb.) The groove of the labium of the male increases in 

 shallowness from tip to base; at the middle of the proboscis (fig. 12) it is so 

 shallow that it fails to fully protect the labrum epipharynx, and at its base 

 (fig. 13) it is so shallow that the other mouth-parts rest only on top of the 

 labium. To make up for this deficiency of protection by the labium, the maxillary 

 palpi, as was previously mentioned, cover over the upper side of the enclosed 

 parts (see fig. 13), and thus, altho free from the labium, form a part of 

 the protective sheath, which, in the female, is formed by the labium alone. 

 Whether the joint near the middle of the labium of the male Culex is true or 

 false I cannot say, since I have never seen it bent by the insect itself; its 

 appearance is that of a true joint. Like the labium of the female, that of the 



