﻿Dec. 1895] Dyar and Morton. New York Slug Caterpillars. 155 



double throughout the subdorsal ridge, the primary setaj pointed, some 

 of the secondary a little swollen at tip. Lateral ridge bears three set?e 

 on joints 3 and 4 and a long, slender one on joint 13, its tubercle 

 scarcely larger than the secondary ones. Dorsal and ad-dorsal de- 

 pressions ill-defined, smooth, the tubercles on the rounded latticed 

 ridges; a single row of lateral impressed areas, the spinose tubercles 

 mostly above them; subventral region finely granular, not setiferous. 

 Color green, a broken whitish stripe along the subdorsal ridge. Length 

 1.5 to 2 mm. 



Stage III. — Width of head .5 mm. (calculated .54 mm.). Shape 

 as before, the dorsum depressed between the prominent subdorsal 

 ridges ; lateral ridge also prominent, composed mostly of the large 

 tubercles. Dorsal depressed areas well defined, the colorless tubercles 

 with short secondary setse on the latticed ridges ; the lateral areas de- 

 fined as far as the central and upper rows, the lower double row not 

 distinguished. Lateral latticed ridges quite well-defined, but rounded, 

 not sharp like the dorsal ones. Secondary tubercles sparse. Primary 

 tubercles large, conical, with two setje on subdorsal and one on lateral 

 as before. Fine setse are present on joint 2, four in the region of the 

 cervical shield, one before the spiracle. Color green with a pale yel- 

 low subdorsal line below the skin. Length 2 to 3 mm. 



Stage IV. — Width of the head .75 mm. Elliptical, rounded at 

 both ends, evenly arched, highest about the middle ; ridges moder- 

 ately rounded, the subdorsal with two long, coarse setre, the tubercles 

 low, most of the secondary setas reduced to skin spines, but a few still 

 distinct bristles. Lateral ridge with single large seta and many small 

 ones as before. Dorsal space with sparse clear granules, scarcely setif- 

 erous, but spined. The dorsal impressed spaces show as white inter- 

 segmental spots, the ad-dorsal as circular hollows ; smooth, not discol- 

 ored. A yellowish white row of spots, alternating with the tubercles. 

 Lateral space rather coarsely granular, the depressed areas smoother, 

 ill-defined, not discolored. Subventral area only sparsely granular, the 

 intersegmental hollows elliptical longitudinally. Length 3 to 4.2 mm. 



Stage V. — (PI. VI, fig. 18, side view; fig. 6, front view; fig. 3, lateral 

 tubercle, figs. 16-18, life size.) Width of head i mm. (calculated 

 1.04 mm.). Elliptical, the posterior end quadrate, evenly arched. 

 Subdorsal and lateral ridges made prominent by segmentary, high, 

 conical tubercles. Green ; a distinct yellow line under the subdorsal 

 ridge, slightly waved, not reaching the anterior edge of joint 3, which 

 is yellow to the lateral area. Spines dark. Skin with sparse clear 



