﻿Dec. 1895] Dyar and Morton. New York Slug CAXERriLLARS. 157 



closely appressed and somewhat irregular (PI. VI, fig. 7). Impressed spots 

 small, rather deep, the bottom with a transverse groove in the dorsal 

 plates, the rest finely granular; upper and lower segmental lateral spaces 

 not discolored, the latter obscure. A row of small yellow dots beneath 

 he skin of lateral ridge. 



Five days after the molt the color is a bright, rather yellowish 

 green with a slight whitish cast. The dark border to the subdorsal line 

 appears continuous to the naked eye. 



Six days. — Becoming whiter, like Packardia geminata. The 

 lateral ridge is green, but the rest is rather opaque whitish green. Sub- 

 dorsal line very distinct, pale yellow, spotted with an orange tint inter- 

 segmentally, edged above continuously with blackish green, widest 

 segmentally. Yellow line on joint 3 anteriorly not orange shaded, 

 fading into the white subventral line. Depressed spaces marked by 

 faint yellow rings, as the glandular centers are green. 



Seven days. — Still whiter. A fine whitish green, shading more 

 translucent down the sides. On the tenth day the larva shrunk up, 

 turned of a pale whitish and lost its hold on the leaf; the next day it 

 had spun its cocoon. Length 9.3 to 15 mm. 



Cocoon. — (PI. VI, fig. 12.) With the characters of the group. 



EXPLANATION OF PLATE VL 

 {Apoda y-inversa.) 



1. Stage I, side view, sliowing the arrangement of the setje : enlarged. 



2. One of the subdorsal abdominal setic (after Chapman). 



3. A tubercle of the lateral row, stage V, showing skin spines X 'TS- 



4. Front view, stage VL 



5. Front view, stage VII. 



6. Front view, stage V. 



7. A seta of lateral row (same view as fig. 3) in last stage, showing skin granules 



X 175- 



8. Side view, stage V, showing arrangement of setoe. 



9. Apoda y-inversa, female. 



10. Last stage, side view, showing the areas of the body, 



11. The same, dorsal view. 



12. Cocoon, on a leaf of Carya alba. 



13. Feeding marks of the larva, stage III. 



14. Mature larva, side view. 



15. Mature larva, dorsal view. 



16. 17. Larva in stage V. 



18. The same, side view. 



19. Feeding marks of the larva, stage II. 



(Figures 9, 12 to 19 by Miss Morton; figures i to 8, lo and 11 by Dr. Dyar.) 

 [Note. — The plate has been too greatly reduced so that 8 per cent, should be 

 added to the dimensions of the figures to make the above measurements apply exactly.] 



