620 Dr. G. B. Longstaff's Bionomic Notes on Butterfiies. 



Fritz Mliller found the latter " rather faint and often 

 hardly distinguishable."* 



Nejjheronia ceylanim, Feld. (Ceylon, 1908). The ^ of 

 this beautiful butterfly has a more or less distinct scent, 

 which I compared to Frecsia. A $ had a similar scent, 

 though slight, which my wife compared to frangipani. 



PhoiUs agarithc, Boisd. (Tobago, 1907). Of 3 $ ex- 

 amined two yielded a scent noted as being " sweet, neither 

 strong nor pleasant." 



Callidryas euhule, Linn. (West Indies, Northern coast 

 of S. America, 1907). In no less than 32 out of the 33 $ 

 tested a distinct scent was readily perceived, indeed in the 

 great majority of cases it is noted as "strong," twice as 

 " very strong." In quality the scent was agreeable (Mr. 

 Abell termed it " delicious ") and was compared to Sie- 

 phanotis, or Frecsia, but Fritz Miiller f termed it musk- 

 like ; Miss Murtfeldt " shght violet." J With the 22 $ 

 examined the result was very different ; in 9 cases it was 

 negative, but in the remaining 18 a scent was detected, 

 which, though usually described as " very slight," or 

 " slight," and never as " strong," was often distinct enough. 

 In quality the scent of the $ eubule was disagreeable ; 

 somewhat sweet, but recalling bad pomade, or rancid 

 butter, or butyric acid (as Dr. Dixey aptly suggested of 

 another butterfly). Fritz Miiller described it as " a very 

 strong peculiar odour, in which some volatile acid seemed 

 to predominate." 



Gatopsilia pomona, Fabr. (Ceylon, 1908). The sweet 

 scent associated with the fringes of the $ was confirmed : § 

 this I compared to Freesia, or Stephanotis. Out of 27 $ 

 examined the result was negative in 18, but in the other 

 9 a slight, usually very slight, sweet scent without other 

 special character was noted. 



Gatopsilia pyranthe, Linn. (Ceylon, 1908). The number 

 of specimens taken was very much smaller than of pomona, 

 but the scent was more easily detected in the $ , and 

 more decided in the $ than in that species.|| In both 



* Fritz Miiller, Trans. Ent. Soc. Lond., 1878, pp. 217, 218. 



t Loc. cit. p. 218. 



X Scudder, " Butterflies of the Eastern United States," vol. ii, p. 

 1047. 

 • § Trans. Ent. Soc. Lend., 1905, pp. 121, 122. 



II For previous experience compare Trans. Ent. Soc. Lond., 1905, 

 pp. 101, lOy, 118. 



