94 Journal New York Entomological Society. ' [Vol. vi. 



THE LIFE-HISTORIES OF THE NEW YORK 

 SLUG CATERPILLARS XV. 



PLATE VI, FIGS. I-II. 



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

 Heterogenea flexuosa Grote* 



1880 — Limacodes jlexuosa Grote, North Am. Ent. I, 60. 

 1880 — Limacodes azsonia Grote, North Am. Ent. I, 60. 

 1894 — Heterogenea cxsonia and Jlexuosa Neumoeges & Dyar, Journ. N. Y. 

 Ent. Soc. Ill, 74. 



Larva. ■ 



1878 — Glover, 111. North Am. Ent. pi. 95, fig. 19. 



1893 — Packard, Proc. Am. Phil. Soc. XXXI, 105 (as "full grown larva of 

 Heterogenea sp."). 



1895 — Dyar & Morton, Journ. N. Y. Ent. Soc. Ill, 146 (in synopsis). 



1896 — Dyar, Journ. N. Y. Ent. Soc. IV, pi. VI, figs. 3 and 4 (as Tortricidia 

 fallida'). 



Special Structural Characters. 



Dorsal space narrow, of even width, scarcely narrowing at the ends, 

 gently arched ; joint 13 rounded prominent. Lateral space broad, 

 oblique, narrowing to the extremities ; subventral space small, re- 

 tracted. Subdorsal ridge slight; indicating the change in direction 

 between back and sides; lateral ridge rather prominent, overhanging 

 the subventral space. Outline elliptical, joint 13 only slightly notched 

 on the sides, not forming a quadrate tail. Depressed spaces (i)-(8) 

 present, the subventral ones (7) and (8) only indicated, the others 

 sharp edged and deep, large, dividing the surface into latticed ridges as 

 in Tortricidia pallida, (4) the largest, transversely elongated, the lower 

 segmental (5) moderate, the intersegmental (6) very small, alternating 

 exactly in line with the lower edge of (5). Skin surface covered with 

 coarse clear granules, the depressed spaces finely granular in the base. 

 In the first stage the setae are arranged as in T. pallida, but disappear 

 at the first molt when all the structural characters are assumed nearly 

 in their mature form. Coloration of the pattern and colors of T. 

 pallida, modified in detail. 



* This is not a Heterogenea ; but I reserve generic corrections till the end of 

 these articles. 



