10 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO7 



70. First tergal muscle of the trochantin (figs. 2, 3, 5, 18, 19, 20). — 

 Arises from the tergum near the median line, goes to the anterior 

 part of the apodemal tendon on the edge of the first plate of tro- 

 chantin (figs. 15, 16, iTn). 



yi. Second tergal muscle of the trochantin (figs. 2, 5, 6, 8, 20). — 

 Arises from the tergum, near the origin of yo; goes to the pos- 

 terior part of the apodemal tendon on the edge of the first plate 

 of trochantin (figs. 15, 16, iTn). 



^2. Third tergal muscle of the trochantin (figs, i, 2, 3, 4, 5, 6, 8, 

 9), — Two branches, a and b, arise from different places on the 

 tergum but soon unite to form one muscle which inserts on first 

 plate of the trochantin (figs. 15, 16, iTn), near its posterior end. 



7J. Fourth tergal muscle of the trochantin (figs, i, 2, 4, 5, 6, 7, 8, 

 20). — Arises laterally from the tergum. It is a broad, flat muscle 

 at its origin, tapering downward to its insertion on the posterior 

 end of the surface of trochantin. 



/'4. Tergal promotor of the coxa (figs, i, 2, 4, 6, 8, 9, 10, 11, 12, 13, 

 14, 18, 19, 20). — Rather broad, flat muscle, arising from the 

 anterior edge of tergum, tapering to its insertion in small sclerite 

 near the coxo-epimeral articulation. 



y^. Sterno-pleural promotor of the coxa (not shown in figures). — 

 Originates on the anterior edge of episternum and under side of 

 pleural edge ; goes to the same sclerite as 74. 



y6. First tergo-meral muscle (figs. 2, 3, 5, 6, 7). — Arises from the 

 tergum and goes to the meron. Acts probably as a remotor of the 

 coxa. 



yy. Second tergo-meral mAiscle (figs. 2, 3). — From tergum to meron. 

 Acts probably as a remotor of the coxa. 



yS. Third tergo-meral muscle (figs. 2, 3). — Arises from tergum, in- 

 ternal to y6, goes to meron. Acts probably as a remotor of the 

 coxa. 



y^. Fourth tergo-meral muscle (figs, i, 3). — Arises from the tergum 

 near the median line, goes to the meron. Acts probably as a re- 

 motor of the coxa. 



80. Tergal remotor of the coxa (figs. 2, 3, 4). — Arises from the 

 tergum near the median line, goes to the basicosta of the coxa. 



81. Main tergal remotor of the coxa (figs, i, 2, 3, 4, 5, 17, 18, 19). — 

 Powerful, flat muscle ; arises from the anterior edge of the ter- 

 gum, turns around most of the thoracic muscles, goes to the 

 posterior (dorsal) portion of the basicosta of the coxa. 



82. Sternal adductor of the coxa (figs. 5, 6). — Flat muscle arising 

 on the sternal arm, inserted on the basicosta of the coxa. 



