22i 



PSYCHE. 



[M:iy— July iJJ 



Chauliodes maciilatus Ramb. — The 

 entire surface of the epipharynx is cov- 

 ered with very fine hairs which are 

 broad at the base and very short. 

 There are one or two taste-cups under 

 the front edge of the clypeus ; others are 

 scattered along the middle from the base 

 of the labrum to the front, but are not 

 arranged in definite order. 



Corydalis cornuttis Linn. — The 

 epipharynx of the female is covered with 

 scattered tactile setae, and there are no 

 sense-cups, pits, or rods to be seen. 



Chrysopa sp. — In a specimen from 

 Florida the labrum is deeply notched at 

 the end. Over the epipharynx are scat- 

 tered cups with a short acute bristle, 

 which are probably gustatory in function, 

 though they are not confined to the 

 median region of the epipharynx. 



Myrmeleon diver S2i?n Hagen. — Lab- 

 rum very short, with a slight shallow 

 median excavation. As in Chrysopa., 

 the presence in the epipharynx of sense- 

 pits or taste-cups is doubtful. What 

 at first seem scattered taste-cups, mostly 

 bear long tactile hairs, which in some 

 cases are very fine and short. But there 

 is a group of pits, probably gustatory, 

 about twelve on each side of the anterior 

 clypeal region, from one to three of 

 them being situated on the base of the 

 labral region ; there are also a few on 

 each side near the base of the labral 

 region, some of those in the triangular 

 area near the front edge of the epi- 

 pharynx may also be gustatory in func- 

 tion. On the whole I am disposed to 

 regard these structures as taste-cups. 

 Mantispa brunnea Say. — In a speci- 



men from Utah the labrum is rather 

 long and pointed in front, with no 

 traces of a median suture. On the side 

 of the epipharynx are tactile hairs, but 

 along the middle from the base to near 

 the front edge are scattered about 30 

 unmistakable taste-cups, each bearing a 

 short, fine hair. This confirms me in 

 the belief that the structures above de- 

 scribed in Chrysopa and in Myrmeleon 

 are also gustatory. 



Order Coleoptera. 



I have been unable to detect any 

 sense-organs in the epipharynx of Den- 

 droctofzus rujipennis Kirby, or of 

 Lucanus dama Thunb ; on the other 

 hand, taste-cups occur in the larva 

 of cerambycid, scarabaeid and other 

 beetles ; but I have been unable to dis- 

 cover any taste-organs in the larva of a 

 rather large elaterid from Florida. 

 Moreover, taste-cujDS appear to be about 

 as well developed in the carnivorous 

 beetles Carabidae as in the phyto- 

 phagous or lignivorous grovips. 



Epicajita ?naciilata Say. — Labrum 

 hollowed in front. Epipharynx with 

 unusually numerous taste-cups, which 

 are conical papilliform, and truncated 

 at the end as if open, the edge of the 

 opening is ragged, but no distinct bristle 

 is present, except in a few. Over 100 

 taste-cups were counted in the middle 

 and near the front ; arovmd the edge of 

 the sinus is a regular marginal row of 

 large, longer, more distinctly chitinized 

 taste-cups, w*hose walls are streaked up 

 and down by chitinous thickenings. 

 It will be seen that in number, structure 



