l6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I07 



b. (figs. 27, 28). — Origin on the anterior part of the coxal rim 

 and on the ridge which limits the meron. 



c. (fig. 28). — Origin on the anterior wall of coxa and coxal 

 rim. 



140. Posterior coxal levator of the leg (fig. 25). — Rather small mus- 

 cle with four branches (a, b, c, d) which originate on the pos- 

 terior wall of the coxa. All branches converge on apodemal 

 tendon which is attached to the trochanter very near to the ten- 

 don of I3p. 

 Numbers 141 to 146 have been left for the muscles of the rest of the 



middle leg. 



METATHORAX 



14/. Closing muscle of the second spiracle (fig. 52). — Small, fan- 

 shaped muscle. Origin on the inferior part of the spiracular 

 plate. Its fibers converge on a lever arising from the inferior 

 commissure of the spiracular opening. 



148. Ventral longitudinal muscle (fig. 54). — Long, flat band of 

 fibers going ventrally from the sternal arm of the mesothorax 

 to the sternal arm of the metathorax. 



I4p. Transverse ventral muscle (fig. 54). — Flat ribbon from the sec- 

 ond spina (2Spn) to a small plate near the edge of the met- 

 episternum. 



ijo. Phragmal m^uscle of the episternum (fig. 54), — Broad, short, 

 flat muscle going from the second phragma to the anterior edge 

 of the metathoracic episternum. 



i^i. Spino-sternal oblique muscle (fig. 54). — Flat bundle of fibers 

 extending from the second spina to the anterior edge of the 

 sternal arm. 



152. Spino-sternal longitudinal muscle (fig. 54). — Very slender, 

 threadlike bundle of fibers running along the medial line from 

 the second spina to the base of the metathoracic sternal arm. 



152' Dorsal longitudinal muscle (figs. 37, 38). — Flat bundle of fibers 

 between the second phragma and the first abdominal tergum. 



154. First dorsal oblique muscle (fig. 37). — Small, short muscle 

 which originates on the median line of the tergum and goes to 

 the medial part of the first abdominal tergum. 



155. Second dorsal oblique muscle (fig. 37). — Two broad bunches of 

 fibers (a and b) which take their origin near the median line 

 of the tergum and go to the lateral part of the anterior edge of 

 the first abdominal tergum. 



