FIG. 60. External anatomy of squash-bug, Anasa tristis. a, upper, b, under, 

 and c, side, view of head; ant, antenna; oc. ocellus; d, pro-, e, meso-,/, meta- 

 notum; sc', meso scutum; scl. meso-scutellum; y, pro-, h, meso-, i, meta- 

 pleurum; st, pro-, st', meso-, st", meta-scutum; epis, epis'. epis", episternum 

 of pro-, meso-, and meta-thorax; em. vm' , em", epimerum of pro-, meso-, and 

 meta-thorax; j, k, I, under side of the pro-, meso-, and meta-thorax; ex", 

 coxa; tr", trochanter; /, femur; t, tibia; ts, tarsus; m, dorsal, n, ventral, o, 

 side, view of abdomen; sp', sp", six pairs of spiracles. (To face p. 74.) 



