394 



JOURNAL OF ECOXO^IIC ENTOMOLOGY 



\yo\. 8 



10 



11 



12 



13 



Spiracles yellowish with dark rims. Ground color of head shield whitish .... 



Noctua clandestina Harris. 



Spkacles black. Ground color of head shield pale yellowish brown 



Noctua hadinodis Grote. 



Skin granules very small, flat or sHghtly convex, set pavement-Hke, -^dthout 

 secondary granules (PI. 20, fig. 11) 12 



Skin granules coarse, isolated, strongly convex or bluntly conical, interspersed 

 irregularly with many small secondary granules (PI. 20, figs. 5, 8, 9). .14 



Reticulation of head shield replaced entirely by close-set fuscous freckles (PL 

 20, fig. 6). Subspiracular white band distinct Euxoa 7nessoria HaTris. 



Head shield more or less fuscous-, or ferruginous-reticulate. White subspi- 

 racular band not distinct 13 



Tubercle I of abdominal segments nearly or quite as large as tubercle II ... . 



Feltia ?nalefida Guenee. 



Tubercle I of abdominal segments about one-half as large as tubercle II ... . 



Feltia gladiaria Mon-ison. 



Skin granules upright, conical, somewhat retrorse (PI. 20, fig. 8). Tubercle 



I of abdominal segments about one-half as large as tubercle II 



14 \ Feltia annexa Treitschke. 

 Skin granules strongly convex but scarcely subconical, not at all retrorse (PL 

 20, figs. 5,9) \ 15 



15 



Tubercle I of abdominal segments nearly or quite as large as tubercle II ... , 



Feltia jaculifera Guenee. 



] Tubercle I of abdominal segments about one-third as large as tubercle II ... . 

 [ . Agrotis ypsilon Rott. 



Explanation of Plate 20^ 



Fig. 1. Diagram of head shield of Feltia annexa larva showing the paraclypeal 



sutures attaining apex of head sliield. 

 Fig. 2. Diagram of head shield of Peridroma saucia larva showing the parach^jeal 



sutures not attaining apex of head shield. 

 Fig. 3. Diagram of the dorsum of an abdominal segment of a cutworm sho'^dng 



tubercles I and II. Tubercle I is anterior. 

 Fig. 4. Diagrammatic lateral view of an abdominal segment of a cutworm giving 



the notation of the setigerous tubercles. Tubercle IV is posterior to the 



spiracle. 



Fig. 5. Portion of the skin of Feltia jaculifera highly magnified showing the strongly 



convex, isolated, primary and secondarj^ granules. 

 Fig. 6. Head shield of Euxoa messoria showing the submedian fuscous arcs nearly 



absent and the reticulation reduced to close-set fuscous freckles. 

 Fig. 7. Head shield of Feltia jaculifera showing the fuscous submedian arcs, the 



reticulation, and a portion of the stemmatal stripe. This is the usual 



coloration among cutworms. 

 Fig. 8. Portion of the skin of Feltia annexa liighly magnified showing the isolated, 



conical, retrorse, primary and secondary granules. 



1 Figures 1-4 were drawm by Mr. Harry Bradford. The remainder of the drawings 

 are the work of Mr. Joseph D. Smith. 



