TEXT-BOOK OF ENTOMOLOGY 



and bears on the edge what appear to be numerous taste-hairs, like 

 those on the ends of the maxillary and labial palpi. 



In the adult Panorpidee the 

 lingua is a minute, simple lobe. 



In the larval Trichoptera the 

 spinneret is well developed, and 

 in structure substantially like 

 that of caterpillars, and it is 

 plainly the homologue of the 

 hypopharynx, receiving as it- 

 does the end of the silk-duct. 

 In the adult Trichoptera the 



FIG. 73. A, labium of Znithft arnira. B, , , . , 



of z. m(i>-!/;>,,-!/>t/ttittt. c, of Gerri* najas: hypopharynx is a very large, 



ml. mentum; li>, labial palpi; sg, subgalea; I, V1 a , ,-. 



lacinia (=intermaxillare and pnemaxillare of tongUC-llke, fleshy Outgrowth, 



and is, both in situation and 

 structure, since 

 it contains the 

 opening of the 

 silk-duct, exact- 

 ly homologous 

 with the hypo- 

 pharynx of in- 

 sects of other 



orders, being somewhat inter- 

 mediate between the fleshy 

 tongue or lingua of the man- 

 dibulate insects, especially the 



Brulle) ; g, galea. After Leon. 



br 



mt 



FIG. 74. Section through head of a carabid, Anrtfithalmun telknmpfii : lir, brain ; /. g, frontal 

 ./<>. subu-sopliafreal prantrlion ; co, commissure; n. I, nerve seinlinu' branches to the 

 i/i; in n. maxillary nerve; n/.r, 1st maxilla; mm, maxillary muscle; m.r', '.'d maxilla; 



////. muscle of mentum ; If, elevator muscle of th sopliairus ; I of the clypeiis, nrxl a third beyond 



r.'iisintr the labrum (Ibr) ; fph, epipharynx ; (/, g , salivary glands above; fl-, lingual gland In-low 

 the oesophagus (oe) ; m, mouth; pr, proventflculus ; md, mandible. A, section passing through 

 lingual gland (f/ 2 ). 



