xviil Journal of Agricultural Research vol. xx 



go. Neodiprion lecontei: Sixth-stage larva. A. — Front view of head. B. — 

 Ventral (or apical) view of head capsule. C. — Front view of head cap- 

 sule. D. — Lateral view of head. E. — Sagittal section of head. F. — 

 Antenna. G. — Frons, adfrons, and clypeus. H. — Mandibles. I. — 

 Epipharynx and labrum. J. — Internal view of hypopharynx maxillse, 

 and labium. K. — External view of maxillae, and labium. L. — Exter- 

 nal view of maxillae. M. — Interior and apical view of maxilla. N. — p a ge 

 End view of maxilla. O. — End view of labium 760 



91. Neodiprion lecontei: Sixth -stage larva. A. — External view of the thorax. 



B. — External view of the second and third abdominal segments. C. — 

 External view of the ninth and tenth abdominal segments. D. — In- 

 ternal view of thoracic skin. E. — Internal view of the skin of the second 

 and third abdominal segments. F. — Diagrammatic cross section of the 

 abdomen showing the longitudinal areas of the body on its transverse 

 circumference 760 



92. Neodiprion lecontei: A. — Some defoliated twigs showing feeding on bark 



of stem. B. — Eggs within needles of Pinus virginiana 760 



Evaluation of Climatic Temperature Efficiency for the Ripening Proc- 

 esses IN SwEETCORN 



Text Figure 



1. Comparison of early and late crops of sweet corn in respect to changes in per- 

 centage composition in equal lengths of time 798 



Some Lepidoptera Likely to Be Confused with the Pink Bollworm 



Plates 



93. Male genitalia (Gelechiidae): A. — Gelechia trophella: Posterior part of 



tegumen, showing uncus and gnathos, ventral view. B. — G. trophella: 

 Lateral view of male genitalia with eighth abdominal segment attached. 

 C. — G. hibiscella: Lateral view of male genitalia with eighth abodminal 

 segment attached 836 



94. Male genitalia (Gelechiidae): A. — Telphusa mariona (type): Lateral view 



of male genitalia. B. — T. mariona (type): Posterior part of tegumen, 

 showing uncus, ventral view. C. — Gelechia neotrophella (type): Aedoea- 

 gus and penis. D. — G. neotrophella (type) : Lateral view of male genitalia 

 with aedoeagus and eighth segment removed. E. — G. neotrophella 

 (type): Posterior part of tegumen, showing uncus and gnathos, ventral 

 view. F. — G. neotrophella (type) : Posterior half of harpes, ventral view. 

 G. — G. neotrophella (type) : Sternite and tergite of modified eighth abdom- 

 inal segment 836 



95. Male genitalia (Gelechiidae, Stenomidae, and Oecophoridae): A. — Iso- 



phrictis similiella: Ventral view of male genitalia, spread. B. — Aede- 

 moses haesitans: Ventral view of male genitalia, spread. C. — A. haesi- 

 tans: Enlargement of typical split hair on cucullus. D. — Borkhausenia 

 fasciata: Ventro-lateral view of male genitalia, spread, showing a sym- 

 metrical armlike projections from gnathos and costa of harpes 836 



96. Male genitalia (Oecophoridae): A. — Borkhausenia minutella: Aedoeagus. 



B. — B. minutella: Ventral view of male genitalia, spread, aedoeagus 

 omitted. C. — B. diveni (type): Ventral view of male genitalia, spread. 

 D. — B. diveni (type): Dorsal view of an abdominal segment showing 

 spinose condition of abdomen. E. — B. diveni (type) : Modified tergite of 

 eighth abdominal segment. F. — B. diveni (type): Modified sternite of 

 eighth abdominal segment 836 



