FIG. 105. External anatomy of squash-bug, Coreus tristis. a, upper, 6, under, 

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

 notum; sc', meso-scutum: scl. meso scutellum ; g, pro-, h, meso-, /, meta- 

 pleurum; at, pro-, st', meso-, st", m eta stern um;cpis, epin', epis", episternum 

 of pro-, meso-, and meta-thorax ; em, em', em", epimemm of pro-, meso-, and 

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

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

 Side, view of abdomen; sp', sp", six pairs of spiracles. (To face page 100.) 



