64 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 82 



p^. Anterior rotator of the coxa (figs. 34, 35, 37). — Origin on 

 sternellar lobe of mesosternum (figs. 34, 35) ; extends anteriorly and 

 outward to anterior angle of coxa (figs. 35, 37 A, B, C). 



pj. Posterior rotator of the coxa (figs. 34, 35, 37). — Origin on 

 second spina (figs. 34, 35) ; extends outward, above p^, to posterior 

 inner angle of coxa (figs. 35, ;^'/ A, B). 



P4, pj. First and second abductors of the coxa (fig. 37 A). — Origin 

 on anterior ventral area of episternum (Eps) ; fibers of each converge 

 to a pair of long, flat apodemes arising anteriorly on outer margin of 

 coxa (fig. 37B, C, p^,p5). 



p6. Third abductor of the coxa (fig. 37 A). — A wide, flat, fan- 

 shaped muscle arising on episternal area posterior and dorsal to P3 ; 

 fibers converging to insertion on a slender apodeme arising in articu- 

 lar membrane laterad of base of coxa just anterior to pleural articu- 

 lation (fig. 37 B, pd). 



P/. First pronator-extensor of the forezving (fig. 37 A). — A large 

 muscle inserted dorsally on first basalar plate (iBa) ; extending ven- 

 trally to attachment on lateral part of sternum before base of mid- 

 dle leg. 



p8. Second pronator-extensor of the forewing (fig. 37 A). — 

 Insertion dorsally close to py on first basalar pkte (iBa) ; attached 

 ventrally on bases of apodemes of first and second abductors of coxa 

 (fig.37B,C,p^). 



pp. Depressor-extensor of the forewing (fig. 37 A). — Inserted dor- 

 sally on subalar plate of wing base (Sa) ; attached ventrally on flat 

 extension of basicoxal ridge (fig. 37 B, pp) in meral region of coxa 

 {Mer) posterior to pleural articulation (c). 



100. First adductor of the coxa (fig. 2)7 A). — A broad flat muscle 

 arising on posterior margin of mesosternal apophysis ; insertion on 

 inner rim of coxa (A, B, 100). 



loi. Second adductor of the coxa (fig. 37 A). — A smaller muscle 

 arising on mesosternal apophysis ; inserted on posterior angle of coxa 

 (A, B, 70/) between attachments of po and pi. 



The telopodite of the middle leg, or that part of the limb beyond 

 the coxa, has the same musculature as the telopodite of the first leg ; 

 its muscles are the following : 



102. Levator of the trochanter. — Origin dorsally in base of coxa ; 

 insertion on dorsal lip of base of trochanter. 



/oj. Depressor of the trochanter. — A five-branched muscle with all 

 branches inserted on a tongue-like apodeme arising from ventral lip 

 of base of trochanter. Two branches arise ventrally in the coxa, one 



