348 ENTOMOLOGICAL NEWS [Oct., '14 



Th. to the Anormostigmatini, or legion Pseudostigma Selys, of the 



Agrioninae, pp. 748-749, footnote.) 

 SKINNER, H. 1913. Antigeny in Nearctic Butterflies (Lepid.). Hnt. 



News, XXIV, pp. 23-27. (Dimorphic males of Lycacna pseudargi- 



olus, pp. 25, 26.) 

 WESTWOOD, J. O. 1839. An Introduction to the Modern Classification 



of Insects, Vol. I. (Dimorphic males in the same species of Staphy- 



linidae, p. 172. See comment in Darwin's Descent of Man, Chap. 



X; Appleton's edition of 1896, New York, p. 299.) 



EXPLANATION OF PLATE XIV. 



Figs, i and 2. Male Thaumatoneura inopinata and female taken 

 pairing at Juan Vinas, Costa Rica, June 27, 1909. x 24. 



Figs. 3 and 4. Male Th. pcllucida and female taken pairing at the 

 same place, October i, 1909. x y$. 



Fig. 5. Right hind wing of Th. pcllucida $ , shown in Fig. 3. x 2 1-6. 



All five figures from photographs by Mr. H. A. Walters. 



The Larva of Papilio homerus (Lepid. t Rhop.). 

 By E. M. SWAINSON and HENRY SKINNER, M.D. 



(Plate XVI, fig. 2.) 



Pafilio homerus, the largest American butterfly, one of the 

 largest of the Papilio family, is said to be found only in the 

 Island of Jamaica, West Indies. 



The larva is very curious and differs from most of the 

 caterpillars of the Papilionids in not having the two fleshy 

 retractile tentacles upon the back of segment next the head. 

 The color is green and brown ; across the "neck" is a band of 

 white, in shape something like a half moon, and on this band 

 are spots of blue; in front of this is a band of brown with a 

 spot at each end, in the centre of which is a line of pale blue. 

 These spots look very like eyes when the larva is at rest. The 

 caterpillar is about two and a half inches long. It gener- 

 ally rests on top of the leaf and is about the same color of 

 green; this may account for its not being easily found as 

 the tree is a lofty one. Five or six caterpillars will lie all to- 

 gether near the leaf stalk, and the eye-like spots on their heads 

 give them the appearance of being on the watch for something. 



One of us has published some notes on the occurrence of this 

 species at Bath, Jamaica, in Volume I of the Journal of the 



