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Fig. 51. 3. stage. Posterior spiracles with the two groups 

 of spines. ^*^/i. 



Panzeria rudis Fall. 

 Fig. 52. 1. stage. Part of the armature of spines. 



- 53. 3. - Posterior spiracles, ^^/i. 



Steiniella callida Meig. 



Fig. 54. 1. stage. Part of the integument of the anterior 

 part of the body showing chitinous plates, 

 some of which carry spines on the poster- 

 ior border, "^"/i. 



Fig. 55. 3. stage. An area of a posterior spiracle. -^^!i. 

 a. Respiratory area. 



Carcelia gnava B. & B. 

 Fig. 56. 3. stage. Posterior spiracles. ^^Ii. sa. as in tig. 18. 



- 57. - - An area of a posterior spiracle, ^^^/i. 



a. as in fig. 55. 



Tachina larvarum L. 

 Fig. 58. 3. stage. Posterior spiracles. ^°/i. 



Viviania cinerea Fall. 

 Fig. 59. Part of a trachea of Carabus violaceus 



with the hole from the borders of which 

 the funnel of the Frø^ama-larva develops 

 (ih). "s/i. 



Ocijptera brassicaria F. 

 Fig. 60. 3. stage. Part of the integument with chitinous 

 plates, -^^/i. 



- 61. - - Part of the armature of spines from the 



last segment. ^^Vi. 



PI. IV. 



Ptychomtjia selecta Meig. 

 Fig. 62. 3. stage. Anal end of the larva, ''Vi. a. anus, 

 g. ambulatory knot. 



