200 Journal New York Entomological Society. [Voi. iv. 
Size, form and elytral markings resembling C. scalaris, Leconte 
.. but lateral margin unspotted. (Mex.) (Ariz., fide 
Crotch.). C. sylvia Sml* 
Genus Chrysomela Linne. 
Marginal groove of thorax not reaching to apex. 
Ovate, green or blue, apterous. Elytra sulcate, finely punctate in regular stiise. 
(Alaska). C. subsulcata Mannerheim. 
Oblong, black, winged; elytra margined with fulvous, intervals irregulaily 
punctate. (Colo., Kans., Neb., Dak.). C. flavomarginata Say. 
Like preceding but without yellow elytral margin. (Col. to Ore.) 
C. basilaris Say. 
Marginal groove of thorax entire. 
Oval, convex, winged, violaceous; elytra golden green or purple, more or less 
irregularly striato-punctate. (Tex. to Neb.). C. auripennis Say. 
Like preceding but entirely bluish black. (Tex., Idaho, Cal.) 
C. inornata Rogers. 
Oval, bluish black, apterous. Lateral margin of thorax more incrassate and 
strongly rounded. (Rocky Mts.). C. montevagans Leconte. 
Globosely oval, aeneous black, subopaque, winged. Elytra finely alutaceous be¬ 
tween the punctures. (N. Y. to Fla., Tex. and Mo.) 
C. subopaca Rogers. 
THE DOG’S HEAD BUTTERFLY ON STATEN 
ISLAND. 
By W. T. Davis. ; 
In the ‘‘Canadian Entomologist” for last July and August the 
fact is recorded that Colias ccesoma , the Dog’s Head butterfly, had been 
taken last June near Toronto and in Southern Manitoba. This southern 
butterfly has never been recorded from the vicinity of New \ ork City 
and its name does not occur in any of the local lists. Its appearance 
during the past summer on parts of Staten Island is, therefore, of con¬ 
siderable interest. A single specimen was taken in June at Eltingville 
by Capt. Robert D. Wainwright, and on July nth the writer saw quite 
a number flying across a sandy, over-grown field near Rossville. .There 
was a strong wind blowing and very few of the butterflies tarried on the 
Asclepias flowers. The next day there was less wind and several were 
captured, though they were not so common as on the nth. By the 
25th of July they had ceased flying. It may be of interest to add that 
Thecla titus was common this year on the flowers of Asclepias tuber os a 
in certain sandy portions of the island. 
*From Crotch’s remarks (Proc. Ac. Nat. Sci. Phila., XXV, p. 50). I suspect 
that he has wrongly identified this species and that the C. sylvia of Stal does not be¬ 
long to our fauna. 
