216 



TEXT-BOOK OF ENTOMOLOGY 



and bees, C. Janet states that each consists of a group of fibres 

 diverging from a tendon, which is an integumentary invagination 

 (Fig. 236). Each fibre may be regarded as a multinucleate cell ; 



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Ur.t- 



FIG. 234. Section through the prothorax of Din pherom era femora-turn : prov, proventriculus ; 

 tr, trachea; n. e, nervous cord; s. gl, salivary gland; hyp, hyi>odermis ; /. t, urinary tube; 

 ht, heart ; ni, m'', m'", muscles for lowering and raising the terguui ; in', another muscle, its use 

 unknown. 



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71 

 _C 



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 . 



., 



t.nitnnoef 



Flo. 23R. Striated muscular fibre of Hyilnipliilns : A and />', two lilirilla- in n state of exten- 

 sion ; it, thick di>k ; li, thin disk ; o, intermediate space. ' ', l>, portion of the same Mbrillie seen by 

 moving the objective farther away and using a small diaphragm; n, thick; o, thin disk, x 2000 

 diuin. After Kanvier, from Terrier. E after Gehuchten, from Lang. 



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14. 4. 



