ANATOMY AND PHYSIOLOGY 97 
very little glycerine had been mixed (though Muscidee did not 
object to the glycerine) and Forel found that ants ate unsus- 
Fic. 126. 
ph 
Section through tongue of wasp, Vespa vulgaris. c, cuticula; g, gland cell; h, 
hypodermis; n, nerve; ob, gustatory bristle; ph, protecting hair; sc, sensory cell; tb, 
tactile bristle—After WILL. 
pectingly a mixture of honey and phosphorus until some of 
them were killed by it. Under the same circumstances, man 
would be able to detect the phosphorus 
but not the glycerine. 
Location of Gustatory Organs.—As 
would be expected, the end-organs of 
taste are situated near the mouth, com- 
monly on the hypopharynx (Fig. 126), 
epipharynx and manillary palpi. On the 
tongue of the honey bee the taste organs 
appear externally as short sete (Fig. 
127) and on the maxille of a wasp as 
pits, each with a cone, or peg, projecting 
Mesmierof ticney bee, vomits base (igs, 128; 129). Similar 
Apis mellifera. p, pro- 
tecting bristles; s, ter- : 
minal spoon; #, taste Packard on the epipharynx in most of the 
sete.—After WILL. 
taste pits and pegs have been found by 
mandibulate orders of insects. 
Histology.—The end-organs of taste arise from special 
hypodermis cells, as minute setae or, more commonly, pegs, 
8 
