508 MODERN CLASSIFICATION OF INSECTS. 
-7 EPPS 
Aly 
zi 

((\ 
in the females* (fig. 124. 2. 
of several-jointed palpi, which are as long or even longer than the 
rostrum in some of the males, and very pilose at the extremity ; 

milles Naturelles, p. 482.) mention only six, including the labium; he, however, as 
well as all other entomologists, except Mr. Curtis, have overlooked a very slender 
needle-like instrument (ribbed up the middle, as it appears to me), which, from its 
situation, is evidently the real analogue of the tongue: indeed, all the parts of the 
mouth of a mandibulated insect are here observable, there being a broad and hollow 
lancet-like piece representing the upper lip (which is the most robust part of the 
mouth, except the labium), a pair of slender needle-like pieces, or the mandibles, and 
“which are serrated on the outside at the tip (fig. 124.3. ); a second pair of similar but 
much more slender organs, dilated at the base, representing the maxilla, to the base 
of which the palpi are attached (_fig.124. 4.); the part above mentioned representing 
the tongue, and the outer tubular canal, in which the others lodge when at rest, 
representing the lower lip. M. Robineau Desvoidy has published some obsery- 
ations upon these organs, supposing the palpi to be analogous to those of the lower 
lip, which Latreille has partially controverted in the second edition of the Régne 
Animal. I have succeeded in extricating the maxillz entire (which are as long as 
the mandibles, a circumstance not ascertained to be the case in Anopheles by Mr. 
Curtis), the bases of which are dilated, and have the palpi attached to them. 
* It has been observed that it is only the females which are accustomed to 
suck blood, a circumstance which also occurs in the Tabanide. (See Kirby and 
Spence, Jntrod. vol. iii. p. 343.) And on carefully dissecting the trophi of several 
males, both of Culex and Anopheles, I have not found the formidable apparatus 
of setze so easily discoverable in the females. A horny cylindrical instrument is 
easily drawn out of the labial canal, and I succeeded in detaching two exceedingly 
delicate filaments, but I am by no means certain that they are any thing but a 
portion of the central organ, which seems to represent the labrum of the female, 
and not to be distinct representatives of the mandibles or maxilla. M_ +Curtis, 
indeed, notices in Culex that the males are destitute of the mandibles and tongue, 
so that the labrum and maxilla must be present as well as the labial canal. In 
Anopheles he has, however, represented the entire series of mouth-organs in the 
male, figuring, by some oversight, the female palpus apart. 
