ENTOGNATIIY IN APTERYGOTES — TUXEN 



405 



only part of this coxa. This seems to me a quite artificial interpreta- 

 tion which, moreover, does not explain the rod from the lacinia to the 

 proximal corner of the stipes (he quite ignores it in the drawing on 

 p. 164). 



0.1mm 



Fig. 18. — Campodca plusiochacta Silv. Head, ventral, with ijiaxillary muscles 

 (a-t) ; see text. Lacinia somewhat schematical. The outlines of the labium 

 given in heavy dash lines. 



The following maxillary muscles are to be noted from dorsally to 

 ventrally (fig. 18) : A dorsal muscle, a, from the ligament of the 

 lacinia to the hind part of the head; another dorsal one, h, from the 

 same ligament to the corner between the stipes and the cardo ; two 

 straight muscles, c, from this same point toward the middle, probably 

 to the endosternum; an oblique one, d, from the same point to the 



