i^ec, 1907.] Dyar : New York Slug-Caterpillars. 219 



in some form or other. Observations on the habits of such species 

 are yet to be made. 



In conclusion I wish to place on record an observation on Megar- 

 hiniis septentriotialis D. & K., our largest mosquito. On July 14 of 

 this year I found a female of this species at Glen Carlyn, Va., probing 

 for honey upon a cyme of Hydrangea arborescens L. The mosquitoes 

 of the genus Megarhimis are so rare that very little is known of their 

 habits, but it appears quite certain that they do not attack animals, 

 indeed, their proboscis is unfit for piercing the skin. Probably they 

 feed wholly upon the nectar of flowers, but as they are very rare, even 

 in their proper home — the tropics, and withal very shy, it is not 

 strange that they have escaped observation. 



Class I, Hexapoda. 



Order V, LEPIDOPTERA. 



THE LIFE HISTORIES OF THE NEW YORK 

 SLUG-CATERPILLARS. —XIX. 



By Harrison G. Dyar, Ph.D., 

 Washington, D. C. 



The series of papers under this title ceased in 1899 with the 

 description oi Natada nasoni Grt., and a concluding general account 

 was given. I am now enabled to add another life history of a species 

 found in New York state, at least occasionally, as Mr. Joutel has taken 

 the larvae on Staten Island. 



Isochabtes beutenmuelleri Hy. Edw. 



1887 — Liviacodes beutenmuelleTiYix . EDWARDS, Can. Ent., xix, 145. 

 1892 — Semyra beutenmuelleri YJi'&v.Y, Cat. Lep. Het. , i, 534. 



1894 — Seviyra beutenmuelleri Neumoegen & Dyar, Journ. N. Y. Ent. Soc, ii, 71. 



1895 — Phohetron beutentnuelleri Dyar, Can. Ent., xxvii, 245. 



1899 — hochcetes beutenmuellei-i Hyak, Journ. N. Y. Ent. Soc, vii, 208. 



1902 — Isoch(Btes beutenmi/llej-i T)\\K, Bull. 52, U. S. Nat. Mus., 356, no. 4090. 



1905 — ■ Isochoetes beutenmuelleii D^AK, Proc. U. S. Nat. Mus., xxix, 387. 



Larva. 

 1878 — Glover, 111. No. Am. Ent., pi. 11, fig. i ; pi. 20, fig. 40 (no name). 

 1899 — Dyar, Troc. Ent. Soc. Wa.sh., iv, 300 (larva no. 2). 

 1899 — Dyar, Journ. N. Y. Ent. Soc, vii, 209, 236. 

 1902 — Joutel, Journ. N. Y. Ent. Soc, ix, 190. 



