SMITHSONIAN MISCELLANEOUS COLLECTIONS 



M *iM^ ,/^ M^s^A^wVWW 



Fig. 4. — Ludius aeripcnnis destructor Brown. 



a, tentorium, in situ, dorsal view (seniidiagrammatic) ; b, right half of ten- 

 torium, lateral view (semidiagrammatic) ; c. branching filaments from hypo- 

 pharynx ; d, dorsal aspect of preoral cavity ; e, "sensory" plate and surrounding 

 sensilla on subnasal flap (oil immersion) ; f, left half of "subnasal flap." 



