28 Annals Entomological Society of America [Vol. XIII, 



25b. The Sixth (a) Lateral (Fig. 21) originates from the 

 lateral anterior edge of the pronotum. This muscle takes a 

 sharp bend, passing between the pronotum and the pleuron, and 

 enters the coxal cavity on the posterior side of the entosternite. 

 [122]. 



25d. The Eighth Dorsoventral (Figs. 20, 21) originates in the 

 dorso-lateral portion of the pronotum just behind the posterior 

 edge of the epimeron. [117]. 



PLEURAL MUSCLES. 



(a) Pleuro-pedal. 



25. The Fourth Lateral (Fig. 20). Origin, the distal 

 anterior edge of the inner face of the episternum. [119]. 



25a. The Fifth Dorsoventral (Figs. 20, 21) originates from 

 the inner face of the epimeron. [115]. 



25c. This is a short muscle originating in the epimeron, 

 near the ventral end, quite close to the leg. At its point of 

 attachment it is pressed closely between the epimeron and the 

 distal blade of the entosternite. 



25e. This also is a very short muscle originating in the 

 outer face of the entopleurite opposite the origin of 25c. (Not 

 figured) . 



26. The Fourth Lateral (Fig. 21). Origin, from the epi- 

 sternum, by a curved head bending round the distal end of the 

 entopleurite; insertion, by tendon into the latero-anterior edge 

 of the coxa. Extensor of the coxa. [118]. 



27. The Fifth Lateral (Fig. 21). From the inner face of 

 the episternum near its attachment to the ventral edge of the 

 pronotum, into the lateral angle of the trochantin. [?120]. 



(b) Noto-pleural. 



XXVIII. The Dorsoventral Muscle (not figured), is a very 

 short, but strong muscle binding the pleuron closely to th^ 

 pronotum. 



(c) Sterno-pleural. 



XXIX. The Furca-entopleural Muscle (not figured), also 

 very short, binds the distal portion of the furca to the ento- 

 pleurite. [132]. 



