Dec. ,8,8.] Dyar: Life-Histories of N. Y. Slug Caterpillars. 211 
veins on the outer part of the wings. Hind wings transparent, fringes fuscous, nar- 
rowly orange at base. Underside of fore wings golden-orange with the veins on 
outer part violet. Hind wings beneath same as above. Antenna: black. Exnanse 
22 mm. r ’ 
i 9 j Summit of Mt. Union, 9,000 feet, Arizona, July 3, 1887, 
flying about scrub oak (G. D. Hulst). Coll. Hy. Edwards. 
1 ? , Texas. Coll. U. S. Nat. Mus. 
Pyrrhotasnia coccinea, sp. nov. 
Head black ; palpi yellow, tip black ; collar narrowly edged with white in front 
1 horax and abdomen bronzy-black with a metallic reflection. Antenme brown-black 
Underside of thorax with a scarlet patch on each side. Legs metallic blue-black. 
ore wings bright scarlet-red, outer border and a round spot at end of cell bronzy- 
brown. Hind wings brown. Underside of fore wings light orange, outer part brown, 
discal spot much reduced. Hind wings beneath same as above. Expanse, 12 mm. 
i 9 > Albuquerque, New Mexico. (Cockerell.) Type, Coll. U. 
S. Nat. Mus. 
^ ery different from any of the hitherto known species. It may be 
at once recognized by the bright red fore wings with brown outer bor¬ 
der and discal spot. 
THE LIFE-HISTORIES OF THE NEW YORK SLUG 
CATERPILLARS.—XVII. 
PLATE XI, FIGS. I-I2. • 
* \ 
By Harrison G. Dyar, A.M., Ph.D. 
Heterogenea shurtleffii Packard. 
1S64— Heierogenea shurtleffii Packard, Proc. Ent. Soc. Phil. Ill, 346. 
1882 Heierogenea shurtleffii Grote, Check List. p. 18. 
1891 Ileterogenea shurtleffii and var. ccesonia Smith, List Lep. p. 29. 
1892— Heterogenea shurtleffii Kirby, Cat. Lep. Het. I, 556. 
1S94 —Heterogenea ccesonia ? Neumcegen & Dyar, J. N. Y. Ent. Soc. II, 74 
Special Structural Characters. 
Dorsal space rather narrow and of uniform width, narrowing a lit¬ 
tle posteriorly, but scarcely so anteriorly; full, rounded, not concave. 
Sides obliquely concave; subventral space small, retracted. Ridges 
at first prominent, with large, low, distinct segmentary tubercles; 
later the subdorsal ridge indicated by the change in direction between 
