COLIAS II., III. 



the remainder of the upjDer surface irregularly specked with brown ])oints, from 

 each of which springs a white hair; head ob-ovate, granulated, dark-brown. 

 (Fig. h, magnified.) To first moult three days. 



After first moult ; length .12 inch ; shape as before ; the segments creased ; 

 the whole upper surfece covered with minute whitish tubercles, which are black 

 at their summits, and are disposed on the ridges so as to form both longitudinal 

 and trans^'erse rows ; eacli tubercle oiviuti- a short hair ; color dull u'reen ; under 

 side and legs pale green; head black, shape as before. (Fig. c.) To second 

 moult three days. 



After second moult ; length .3 inch ; the body much as at last stage, but now 

 blue-green, and showing a faint whitisli lateral stripe; head pale green. (Fig. d.) 

 To third moult lour days. 



After third moult ; length .7 inch : the principal change consists in the lateral 

 stripe, which is now white and distinct, and usually shows a red, or orange, or 

 yellow discoloration on the anterior segments ; sometimes black lunate spots 

 appear beneath the stripe, on some of the segments, especially the second and 

 third. (Fig. e., nat. size, e^ magnified). To fourth moult four days. 



After fourth moult ; length 1 inch ; the stripe now incloses a crimson streak, 

 sometimes broken into patches ; there is most often an absence of black spots 

 beneath the stripe, but many examples discover more or less of them up to a 

 complete series, largest on the anterior segments. (Fig./.) In about three days 

 after this moult the larva is full-grown, and prepares to change to chrysahs. 

 (The.se observations were made at Coalburgh, W. Va.) 



Mature L.^^rva. — Length 1.2 inch; body cylindrical, tapering slightly 

 fi'om seventh to last segment, and from the fifth towards the head ; each segment 

 creased four or five times transversely, the surface between the creases rising in 

 rounded ridges, on which are an-anged in rows fine whitish tubercles tipped with 

 black, formino; both lontritudinal and transverse reti-ular lines ; each tubercle 

 throwing out a short white hair ; color dark green, pale green on mider .side ; in 

 line with the spiracles is a white or cream-white stripe from the front of second to 

 the end of the twelfth segment, through the middle of which runs a streak of 

 crimson, broken at the junction of the segments ; frequently on the lower edge 

 of this stripe is a row of lunate, black spots, large anteriorly- and diminishing to 

 a point on twelfth segment, the posterior half of the row often obsolete, even 

 when the other spots are distinct ; head smaller than second segment, ob-ovate, 

 pale green, finely tuberculated, pilose, the mandibles and ocelli black. (Fig. g 

 slightly magnified.) 



Fi'om fourth moult to chry.'^alis there is an interval of four or five days. Total 

 from the egg to chiysalis about eighteen days in midsummer. 



