NO. 1376. LEPIDOPTERA OF THE KOOTEXAT DTSTJUCT—DYAIi. 833 



tiblo, whitish subdorsal and hit(M-al lines. Sul)V('ntr:il nvvn sharply 

 paler, hut sordid, not greatly coiitrastiMh Tulx-rcles large, Itlaek. 

 shining; cervical shield black, a dorsal ))ale line and ditiuso subdorsal 

 one; leg plates j^ale; seta' tine. 



Sfa</c V. — Head half retracted in joint 2, dark brown, clvpeus pale; 

 width, 1.8 mm. Body moderate, joint 12 slightly enlarged; dorsal 

 space In-oadly pale, with dorsal gennnate darker lines, scarcely anv 

 indication of the lattice, l»rown dotted. Sides dark, with obsolete 

 subdoi-sal and lateral pale lines; subventral area pale, feet still paler. 

 Cervical shield large, shining black, with faint paler dorsal and sub- 

 dorsal lines. Tubercles round, black; setse short, pale. 



Stage VI. — Head rounded, the apex well within joint 2, light l)rown, 

 with dark reticulations and vertical bands; width, 2.5 mm. Cervical 

 shield shining brown, diluted in spots and with three pale lines; width. 

 2.5 mm. Body equal, joint 12 scarcel}^ enlarged. Dorsum broadly 

 pale flesh color, dotted; dorsal line pale with diffuse dark edging, sides 

 dark dotted, snb\-enter and venter pale; feet also pale. Tubercles 

 large, black, round, radially grooved; seta; moderate, dusky. 



POROSAGROTIS CATENULA Grote. 



Eight hundred and sixtj'-six specimens, Jul}^ 10, 25, 27, Bl. August 

 4, <), 7, 13, 15, 17. They run much darker than the form from Colo- 

 rado and southern California, but a few are almost as light, and J 

 think a racial name not necessary. The color is stone gray in the 

 majorit}'. The transverse-posterior line is continuous, iinely and 

 strongly scalloped, with white points on the veins. The variation is 

 thus all aAvay from vetusta Walker {^mursemda Grote and llol)inson), 

 and I do not think it a form of that species. 



POROSAGROTIS THANATOLOGIA, new species. 



No specimens; one in Mr. Cockle's collection is a female without 

 abdomen. The specimen is labeled Pdragrotis reuda Strecker, but 

 does not agree at all with Hampson's figure or Strecker s description. 

 Moreover, the spines on the fore tibia^ are so stout that the species 

 seems refera>)le to Poro^agroth rather than to Puntgrotin {Eu.voa of 

 Hampson and Smith). 



Head, collar, and thorax uniformly dark mouse gray. Fore wings 

 elongated, much as in Chorlmgrotix^ light gray basally and terminally, 

 the whole median space blackish, discolorous. Basal half line gemi- 

 nate, ])lack, broken; a black basal dash, dislocated and widened beyond 

 basal line, reaches nearly to transverse-anterior line. Lines geminate, 

 crenulate, not strongly detined, the pale tilling forming a costal spot 

 for each. Trausver.se anterior nearly straight, transverse post(>rior 

 moderately arched over reniform. Orbicular circular, reniform 

 upright, well concave without, pale and narrowly black ringed, the 



