Article beginning on page 330.
Psyche 8:330, 1897.

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,
PSYCHE.
[March 1899.
Simuliwn. examined presented no difler-
ences in mouthparts structure.
Ceratofagon sp. The mouthparts of
females present, as shown in figure 3,
parts similar to those described for the Blepharoceridae and the Simuliidae.
The well-chitinized labm tpipha1y1.1'
(fig. 3, Zh) is elongate, broad at base
and tapering to a blunt tip which bears
two minute processes of the character
of those of the Simuliid epiphaiynx,
The mundibh (fig. 3, 7nd) articulating
on either side of the labrum-epipl~aiynx are, with it, borne by a portion of the
head capsule produced anteriorly so
that the bases of labrum and mandibles
lie considerably in front of the bases of maxillae and labium. Each mandible
articulates with a slight projecting
process of the head capsule. The
mandibles are strongly chitinized, elon- gate, narrow with convex outer margin,
and with a few strong, sharp teeth (den- tations) on the apical inner margin.
The madue (fig. 3 mx) consist of
slender 5-segmented palpus {mx.p'\ and
single blade-like maxillar lobe (mx. I)
reaching to end of second palpar seg-
ment. The /ab/zm (fig. 3 ZÌö" bears but
two terminal lobes, the paraglossae, and these appear to be 2-segmented, They
are free and independent to their bases, The hypopharynx (fig. 5, hyf') is a little Fig. 3, Mouthparts of Cerc~tojogon sp., $ ; Ib labrum-epipharynx, md mandible, mx
maxilla, mx. I maxillar lobe, mx. -fi maxillar palpus, li labium, $g paraglossa, Jsyp hypo- pharynx.
broader than the labrum-epipharynx, is
weakly chitinized, and is weakly but
conspicuously serrate at its apex.
The males of Ceratoftogon have no
mandibles, and the maxillae have no
terminal lobe, and only 4-segmented
palpi.
Chirunomus sp. In females of Chiro-
TJU7mS we meet a mouth structure differ- ing essentially from that of females of
Ceraiupup~ in that there is lacking in
Chiru~zonws the. mandibles and the
maxillar lobes. The mouthparts of
Chironumus are also short and broad
and not elongate as in Ceratopogon.
Chirommus does not possess, as Cera-
topugon does, piercing mouthparts.
EXCHANGE DESIRED.-Dr. A. Griffin; of
Dytiscus, pinned or in alcohol, in exchange the University of Tiirin, Italy, desires to for Italian insects of any order. Address as obtain American specimens of Cybister and above.




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