JOURNAL 



Jlf\a JBorlt €SnforaoIogiraI Horiptg. 



Vol. VI. MARCH, 1898. No. 1. 



THE LIFE-HISTORIES OF THE NEW YORK 

 SLUG CATERPILLARS— XIII-XIV. 



PLATE I, FIGS. I-I2. 



By Harrison G. Dyar, A.M., Ph.D. 



Packard ia geminata Packard. 



1864 — Cyrtosia geminata Packard, Proc. Ent. Soc. Phil. Ill, 343. 



1864 — Cyrtosia albipunctata Packard, Proc. Ent. Soc. Phil. Ill, 344. 



1865 — Cyrtosia ocellata Grote, Proc. Ent. Soc. Phil. IV, 322. 



1866 — Packardia geminata Grote & Robinson, Ann. Lye. N. H. N. Y. VIII 



373- 



1880 — Fackardia goodellii Grote, Can. Ent. XII, 242. 



1894 — Packardia geminata, albipunctata Neumoegen & Dyar, Journ. N. Y. 

 Ent. Soc. II, 109. 



Larva. 



1891 — Dyar, Trans. Am. Ent. Soc. XVIII, 157. 



1 89 1 — Dyar, Can. Ent. XXIII, 277. 



1893 — Packard, Proc. Am. Phil. Soc. XXXI, 107. (as " Larva of Hetero- 

 genea ( I ortricidia ?) ") 



1894 — Dyar, Ann. N. Y. Acad. Sci. VIII, 222. 



Special Structural Characters. 

 Dorsal space moderately broad, flat, narrowing to both extremities, 

 arched; lateral space broad, oblique, narrowing to the ends; subven- 

 tral space two-thirds as wide as the lateral one, distinct, only slightly 

 retreating, suddenly narrowed in front, tapering behind. Ridges 

 tubercular and setiferous till the last molt, then smooth ; subdorsal 

 ridge obsolete, indicated by the rounded angular change in direction 

 between back and sides; lateral ridge slight, dividing the lateral and 

 subventral spaces, subtubercular even in the last stage. Setse at last 

 rudimentary ; in stage I with the structure and arrangement of Apoda 

 y-inversa except that the subdorsal spines have the short branch very 



