some Rest-attitudes of Butter jiics. Ill 



East London I observed several F. cassms, Godt., at rest, 

 but did not see any list. 



Mycalesis sajitza, Hew. Though I took many odd speci- 

 mens of this dingy butterfly, I never found it really 

 common, and have but two notes of its resting attitude: — 

 Berea, near the hotel, Aug. 14tb, seen to settle in the 

 shade, wings upright. 

 And, 



Congella, Aug. 18th. This species does not appear to 

 orient : a slight list away from the sun, but sun 

 not very bright at the time of observation. 

 Dr. Dixey, however, in the case of this butterfly obtained 

 more positive results : — 



Durban (Botanic Garden), Mycalcsis safitza has a very 

 strong list when settled in the open ; it may be to 

 right or left in the same individual. 

 Durban (Botanic Garden), saw Mycalesis safitza 

 settled on bare ground ; it had a strong list to the 

 left. Saw it fly and settle in strong sunshine ; 

 once with its back to the sun, with list to left ; 

 once with head to sun, right list; once at right 

 angles to sun, throwing a broad shadow. 

 It would therefore seem that Mycalesis safitza may be 

 included among the Satyrs with a list, but this does not 

 appear to help concealment by diminishing the shadow, as 

 I suggested would be the case if the list were towards the 

 sun.* 



Near Daijihng, in 1903, I observed a sliglit list in 

 Mycalesis indistans, Moore. And in Japan, in 1904, the 

 • fine Satyrid, Blanaida goschJcetntsckii, Men,, had a striking 

 list.f 



Gc7iercd. 



That the term " Rest Attitude " is used in this paper 

 very loosely I am well aware. A butterfly may be con- 

 ceived as resting in several stages. First, it may settle to 

 feed. Sphinx feeds on the wing ; many a Painlio settles on 

 a flower to feed, but flutters while sucking the honey, this, 

 e. g., is the habit of P. eritJwnius, Cr., P. hector, L., and 

 F. dissimilis, L. Thus in Ceylon I found that the best 

 way of distinguishing the last-named from the Danaids 



* Trans. Ent. Soc. Lond., 1905, p. 136. 

 t Loc. eit. pp. 94, 135. 



