238 Journal New York Entomological Society. [VoI. vil 



broken line; skin granules single pointed.. Cochlidion y = inversa. 



Yellowish green, only slightly whitening at the end of the last 



stage; edge of subdorsal line red; skin granules with a crown of 



points till the last stage* Cochlidion avellana. 



73^/1? 6- — Depressed spaces small ; tubercles i and ii almost completely united in stage 

 I, the resulting single spine short ; joint 13 produced into a pointed tail. 

 Skin granular, not spinose nor crested at any stage ; no dorsal red marks. 

 Well pigmented, whitish green, subdorsal line straight Packardia geminata. 

 Poorly pigmented, yellowish green; subdorsal line wavy. Packardia elegans. 

 Type 7. — Depressed spaces large, sharp ; spines i and ii in stage I of abovu e(|ual 

 length, united at base, forming a Y-shaped structure ; tail (|uadrate ; skin 

 granules not spinose ; larva- marked with red dorsally. 

 Skin granules with a crown of minute spines before the last stage ; joint 3 with 

 a transver-e yellow band in front ; dorsal red mark very small. 

 Anterior edge of joint 3 smooth, rounded ; red mark a round spot. 



Heterogenea shurtleffii.f 



Joint 3 with a pair of yellow prominences in front ; red mark a cross. 



Kronaea minuta.J 



Skin granules more or less papillose in the early stages, not crested ; no 

 transverse yellow line on joint 3. 

 Dorsal red mark large, reaching the lateral margin ; setce rudimentary but 

 persistent. 

 Dorsal mark twice widened, symmetrical antero-posteriorly. 



Tortricidia testacea. 

 Dorsal mark widened, but more so posteriorly, forming a pair of cxca 



vations on the sides Tortricidia pallida. 



Dorsal red mark moderate, not reaching beyond the middle of the sides ; 



setae absent after stage I Tortricidia flexuosa. 



The cocoons and pup^e of the New York species present no marked 

 differential characters in most cases. There is a difference in size, 

 sometimes in color and the presence or absence of an outer veil. But 

 many of the species are inseparable. 



The Ori(;inal Eucleid Larva. 



A generalization of the eighteen species just worked out gives the 

 following result : Elliptical, subcylindrical, not greatly flattened, the 

 abdominal feet absent, replaced by a creeping disk with suckers on 

 joints 5 to II, possibly a small one on joint 12. Joint 2 without 

 warts and retracted partially under joint 3, but forming a hood when 



*This species does not occur in New \'ork. (European.) JoURN. N. Y. 

 Ent. Soc, VII, 202. 



t The European //. cruciata apparently diflers from this in having the red mark 

 very lai'ge, much as in Tortricidia testacea. 



X Not seen. The characters are inferential from Reakirt's description. 



