I06 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO3 



61. Thoracic depressor of the fore trochanter (figs, ii C, 12 C, 

 13 D, E, H). — A long muscle with origin on pleural apophysis of 

 prothorax (not on endosternum as stated by Morison), going down- 

 ward into coxa where fibers inserted on depressor apodeme of 

 trochanter. 



62. Coxal depressor of the fore trochanter (fig. 13 E, H). — A 

 broad muscle occupying entire mesal wall of coxa, fibers inserted on 

 depressor apodeme and apodemal plate of trochanter (fig. 13 E). 



<5j. Reductor of the fore femur (fig. 13 H). — A short broad 

 muscle arising on anterior wall of trochanter, inserted somewhat 

 ventrally on posterior margin of base of femur. 



64. Extensor of the fore tibia. — Origin dorsally in femur, inserted 

 dorsally on base of tibia. 



65. Flexoi- of the fore tibia. — Origin ventrally in femur, inserted 

 on ventral genuflexor plate at base of tibia. 



66. Productor of the fore tarsus (fig. 14 E). — A flat muscle arising 

 on anterior wall of tibia, inserted anteriorly on base of tarsus. 



6/. Reductor of the fore tarsus (fig. 14 E). — A flat muscle arising 

 on posterior wall of tibia, inserted posteriorly on base of tarsus. 



68. Depressor of the fore tarsus (fig. 14 D, E). — A longer muscle 

 than the last two, arising ventrally in tibia, inserted ventrally on base 

 of tarsus. 



6p. Flexor of the pre tarsal claws of the fore leg. — Fibers in two 

 groups arising one in femur, the other in tibia, inserted on long 

 slender tendon traversing tarsus, tibia, and femur from attachment 

 at base of unguitractor plate of pretarsus. 



yo. External longitudinal dorsal muscle of the mesothorax (fig. 

 16 D). — A small submedian muscle traversing the mesocutellum. 



yi. Internal longitudinal dorsal muscle of the mesothorax ; indirect 

 depressor of the wing (fig. 16 A, C). — A huge muscle attached an- 

 teriorly on prephragma of mesonotum and on median area (fig. 16 B) 

 of scutum, attached posteriorly on postphragma of mesonotum. 



y^. Tcrgostcrnal muscle of the mesothorax; indirect elevator of the 

 wing (fig. 16 A, C). — A thick column of fibers attached dorsally on 

 lateral area of mesoscutum (fig. 16 B), attached ventrally on sternal 

 area of pleurosternal region. 



7j. Occlusor of the first spiracle (fig. 17 C, F). — A slender muscle 

 arising on anterior margin of mesepisternum (C), inserted in spiracu- 

 lar membrane in front of spiracular aperture (F), 



74. Pleuroalar muscle of the mesothorax (fig. 19 C). — A small, 

 two-branched muscle arising on anterior margin of mesepisternum 



