Dec. isoj.j Dyar: Life- Histories of N. Y. Slug Caterpillars. 251 



D. The points of origin of the green Frobefroii allies which do not 

 occur in New York. 



E. Phobetron pithecinni. Warts irregular, lateral row reduced, 

 deciduous. Ihe short horns correspond to the weak segments. 

 Tertiary hairs replace the wart hairs, which are reduced to the 

 primitive setce. Color brown, like a dead leaf. Rests on top of 

 the leaf 



F. The main stem of the spined Eucleids. Primitive first stage lost and 

 the ability to eat in stage I also lost. First stage with horn-like 

 warts, bearing several soft seta;. Middle wart lost on both thoracic 

 segments. Weak segments not distinguishable. After stage I horns 

 covered with stinging spines formed of the modified setae. Glandular 

 dots of depressed spaces retained, but feebly developed, the dorsal 

 row double only on joints 3-4 and 4-5. Bright colors developed, 

 red and yellow. 



Q. The lower group of spined Eucleids. Horns equal or but very 

 slightly irregular ; no detachable spinules. Stage I retains more 

 than three setae on the horns, at least at the extremities. Characters 

 as in stem F, but the bright colors degenerate. 



H. Natada nnsoni. Square, horns reduced, the subdorsal row bent 

 outward and the spines appressed to the body, but capable of erection. 

 Skin finely granular. Color green, the horns red, the yellow lines 

 forming a complicated pattern. 



I. Sisyrosea textitla. Flattened, horns degenerate, the subdorsal row 

 reduced. Skin marked with curious waved ridges. Color green, 

 horns not red except at the anterior edge. 



J. Warts of stage I with three hairs only ; horns irregular, the irregu- 

 larity not dependent upon the weak segments ; subdorsal row not 

 shortened. Patches of " caltrope " spinules are present on the 

 lateral horns. 



K. Sihine stii)tnlca. Subdorsal horn of joint 8 not longer than those of 

 6 to 10. Red color absent, the yellow largely replaced by green, 

 forming a peculiar pattern on the purple ground. 



L. The subdorsal horn of joint 8 not so much reduced as the others. 



M. Eiicleaindetermina. Skin spinules converted into granules. Bright 

 colors retained. 



N. Ezulea delphinii. Warts somewhat reduced ; ancestral colors partly 

 replaced by purplish and green. Skin .spinules converted into gran- 

 ules. Terminal detachable spines present. 

 O. Adoneta spimdoidcs. Warts considerably reduced ; ancestral colors 

 mostly retained, but modified for concealment. Skin granular. 

 Terminal horns short. 



P. Parasa chloris. Warts much reduced, the larger subdorsal horns 

 bent inward over the back, erectile ; the posterior pair of horns joined, 



