848 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



MAMESTRA GRANDIS Boisduval. 



Four specimeMS, June 7, 13, 23, July 14, and one from Mr. Cockle's col- 

 lection June 14. Mr. Cockle has the species labeled ncimdee., but it does 

 not ag-ree with Grote's description of that form. Prof. J. B. Smith 

 is the authority for the name, but not improbably some confusion in 

 the labels has occurred. The specimens agree closely with Eastern 

 grandis, and, though a trifle smaller, there is scarcely enough differ- 

 ence to define even a local race. 



I^g(f. — Laid in a large patch. Flatly spheroidal, l)ase flattened but 

 little; 30 vertical ribs, diminishing by alternation, broad, rounded, 

 crested by the longitudinal reticulations, but weakly so, the cross strise 

 likewise weak, shagreened wrinkly overall. Pale j^ellow. later with a 

 purple ring and spot; diameter, 0.6 mm. 



Stage I. — Head strongly bilobed, shining sordid luteous, ejQ black. 

 Body semilooping, feet of joints 7 and 8 short, cjdindrical; joint 12 

 enlarged. Transparent whitish, alimentar}' canal red; tubercles large, 

 setse short, black, stiff'. Cervical shield faintly luteous with black spots 

 at the tubercles, two detached setse; leg shields smoky. Tubercles 

 normal, large, black, no subprimaries; ia to iil) on thorax separate, 

 ia and ib small. 



Stage 11. — Head bilobed, whitish, smoky shaded, sliining, eye black; 

 width, 0.6 mm. Body equal, normal, feet of joints 7 and S small, 

 joint 12 not enlarged. Whitish, green from the food, with olixaceous 

 shading, leaving pale dorsal, subdorsal and lateral lines, the space 

 below the lateral line darker. Below tracheal line to venter sharply 

 paler. No shields; feet pale; tubercles moderate, ])hK'k, in pale rings; 

 setai fine, short. 



Stage III. — Head bilol)ed, held flath", shining pale brown, thickly 

 mottled with blackish over the apices of the lobes; width, 1.1 nun. 

 Body normal, depressed anteriorly, joint 12 a little enlarged dorsally. 

 Dorsum blackish green, subventer light green; dorsal, subdorsal and 

 lateral lines narrow, white, dark edged; space between lateral and stig- 

 matal lines black; substigmatal band broad, white, greenish filled. No 

 shields, the lines continuous; feet pale, the pair on joint 7 small, those 

 of 8 nearly equal to the ones on 9 and 10. Tubercles minute, black; 

 sette moderate, l)rown. 



Stage IV. — Head round, low bilobed, broad, shining translucent 

 white, brown reticulate, showing faintl}' l)rown vertical bands on the 

 lobes and upward from the e3^e; width, 1.7 mm. Body normal, joint 

 12 enlarged a little, feet equal. Dorsum dark slaty olivaceous, black 

 crinkled lines thickly on an ochraceous ground, edging the faint nar- 

 row pale dorsal and subdorsal lines. A dark vinous band between the 

 obsolete lateral white line and the substigmatal one. The latter broad, 

 white, pale vinous filled; subventral space white, translucent, waxy, 



