NO.H40. NORTH AMERICAN NOCTVIDAE-^SMITU AND DYAR. 105 



Expanse, 1.36 to 1.48 inches (34 to 37 «im.). 



I/dhitat. — (Janada to Florida; west to the Pacific coast; central New 

 York iu May; Portland, Oregon, in May; Minnesota; Mississippi; 

 Colorado. 



This sj)ecies is very constant in its general appearance, and is also 

 njcoji'iiizablc by the very dark, bliic-tjray, even ground (;olor, on whi(;li 

 the only proiiiineiit inarkiiigs are tiie l)la<;k hasiil streak and promi- 

 nently shaded dagger mark (ilose to tlie anal angle. The wings have 

 rather a stnmjiy ap])earan(;e and are thickly scaled. The Cront is con- 

 vex and bulging, but hardly inflated, the palpi txiing rather short, closely 

 applied to and hardly reacliing the middle of the front. The anterior 

 legs in the male are stout, rather short, the femur a little dilated, the 

 tibia with the ei)iphysis rather near to the base. The genitalia of the 

 male are characteristic; the harpes are oblong, distinctly broadened 

 Just before the tip; the clasper is corneous, broad, clumsy in appear- 

 jince, forming a somewhat bent scoop, from the u])per margin of which 

 projects a long, finger-like i)rocess. It may be somewhat fancifully 

 compared to the large claw of a lobster, in which the lower, movable 

 jaw is bent to its fullest extent. The si)eciesis not at all rare, although 

 it can scarcely be said to be very common. 



LARVA. 

 DVAU, Insect Life, 1891, III, p. 3(M (Irilona). 



Stof/c IV. — Head bilobed, a|)ical tubercle produced, greenish testace- 

 ous, a brown line up from the eye to the ajucal tubercle, then down on 

 the front a little way; width, l.-J mm. liody compressed, tubercle I 

 produ(5ed, and II also, on Joint lli, especially so. Color yellowish green, 

 greener from the food; a faint brown i)aired dot on Joints -J and .'>. a 

 distinct spot on 4-5, reaching wart 11 on 5 and divided by a pale dorsal 

 line; a subdorsal dark line on Joints 7-10, widest on 7 and narrowing 

 behind, covering warts l-II, on Joints 7-8, over II only on Joints 0-10, 

 Just Joining another spot on Joints 1 1-12, which widens and covers all of 

 Joint 115, warts I-III and is narrowly produced on Joint 13 to arjal ])late. 

 These lines inclose a green dorsal pat(;h on Joints 8-11. Hairs iaw^ 

 seveial from a wart, i)ale; all simple, not glandular; a number of shorter 

 secondary ones subventrally below the white tracheal line. 



Staffe V. — Head as before; the brown shade runs down from apical 

 tubercle on the fa(;e and inward to not(;li of vertex, as well as all down 

 the (mter sid«? to eyes; \yidth, 1.5 mm. liody green, as before. Joint 

 is the oidy one without any brown marks. A whitish subdorsal 

 border to the biown ])and on Joints 7-10. 



Sta(ir, VI. — Head iiH before; width, 2.4 mm. Body green, the brown 

 dorsal band furcate on Joint 2, widening to wart II on Joint .5, smldenly 

 absent on joint 0, beginning again at wart II on Joint 7, bran(;lies run- 

 ning along warts II only on Joints 8-11, a single band again on Joint 12 

 covering warts 1 and 11, which are in a square, then narrowly produced 



