NYMPHALIDAE: SATYRINAE. 1777 



dish brown stripes wliich are deeper in color posteriorly. Head greenisli white and 

 deeply pitted ; mandibles darkened at their tips ; ocelli black. Marked on each side 

 with three narrowing stripes of black, which are continuations of the markings on the 

 body, and consist of the blackened pits of the surface of the head; the dorsal stripe 

 divides and sends a branch down on each side of the frontal triangle ; the other two 

 stripes on each side of the head are extensions of the subdorsal stripe and lateral band 

 of the body; they converge but do not quite meet above the ocelli, which the lower 

 reaches. 



The markings of the body are as follows : a conspicuous, narrow, mediodorsal stripe 

 terminating between the anal horns, and bearing in the middle a narrow, white, broken 

 line; below this a wide, white, subdorsal space, bearing in the middle a narrow, sub- 

 dorsal line, with a waved, threadlike line on each side of it, and about half way to the 

 edge of the subdorsal space ; a conspicuous lateral band, which is pale in the centre; 

 a stigmatal stripe, pale but clearly defined, and showing the supra- and infrastigmatal 

 spaces above and below as clear greenish white lines ; beneath the substigmatal fold 

 is another brown band, with disconnected pale spaces in the centre. Spiracles small 

 and black, but surrounded by a pale ring. Thoracic feet and prolegs greenish white 

 and translucent. The whole body sparsely covered with short, clavate hairs. The 

 anal horns half the length of the anal segment and bent upwards. Length, 12 mm. 

 (Third stage communicated by J. Fletcher.) 



Excepting Morley, at the eastern base of the Rocky Mountains of 

 Alberta, Nepigon, at the northern extremity of Lake Superior, is the only 

 known locality for this species, which must, nevertheless, have a wide dis- 

 tribution. It is single brooded, appearing early in July. The eggs hatch 

 in about three weeks, slightly sooner if transported to the south, the cater- 

 pillars live as long or longer in their first stage, moult for the first time 

 in the latter half of August and winter in the second stage. One carried 

 through the winter by Mr. Fletcher revived April 25 and moulted May 

 15. The caterpillars are exceedingly sluggish, and in their first stage 

 larger and more brilliantly marked than Oeneis jutta. Their latest changes 

 have not been observed, though eggs distributed by Mr. Fletcher and my- 

 self in the summer of 1888 will, it is hoped, secure its further history. 

 These are laid freely on grasses. 



The butterfly has a very different flight from that of some species of the 

 genus and belongs properly to a distinct section from Oe. semidea, and 

 one to which Oe. jutta also belongs ; its movements are swift and, not- 

 withstanding their Satyrid character, are not altogether unlike those of 

 Basilarchia archippus, which on the wing it much resembles. The eggs are 

 subject to the attack of Trichogramma intermedium (89:8) which Mr. 

 Fletcher reared, and the mortality among the growing caterpillars, from 

 whatever cause, is vei-y great ; these feed readily upon both grasses and sedges. 



OENEIS CALAIS. 



Cftiono6as (ay^eJe Edw., Proc. acad. nat. OeJietscAn/XMS pars Scudd., Bull. Buff. soc. 



so. Philad., 1862, 57 (1862). nat. sc, ii : 240 (1875). 



Chionobas calals Scudd., Proc ent. see. [Not Oeneis taygete Hiibn., nor Chionobas 



Philad., v: 7-10 (1865). chrvxus 'We.stw.] 



Imago. Head, thorax and abdomen black, with ochraceous hairs. Antennae reddish 

 yellow, annulated, especially above, with reddish brown; club reddish brown, black 



