LARVAE OF LYC^NA CORYDON AND ANTS. 197 



Phadraspis rufohalteata, sp. nov. 

 Black ; the mesonotum, with scutellum, the upper edge of the 

 pleiu'fB narrowly, apical half of post-petiole, the second abdominal seg- 

 ment entirely, and the legs, red ; the apical two segments white above; 

 antennae with the five middle joints white, except below : wings hya- 

 line, the nervures and stigma black. 5 . Length, 12 mm. ; terebra, 

 4 mm. 



Bindji, Deli, Sumatra ; January (Dr. L. Martin). 



Face and clypeus closely, strongly punctured ; the labrum and 

 mandibles red, the latter black at the apex. Middle of front somewhat 

 strongly, transversely striated ; the sides and vertex almost smooth. 

 Pro- and mesothorax closely, strongly punctured, the mesonotum 

 thickly covered with fulvous pubescence ; the scutellum is more strongly 

 but not so closely punctured as the mesonotum. Post-scutellum 

 smooth. Pleurffi coarsely, closely punctured, more or less striated, and 

 becoming coarser towards the apex. Petiole smooth, the post-petiole 

 strongly but not closely punctured ; the sides of the raised central part 

 of the post-petiole smooth and shining at the base ; the second and 

 third segments closely punctured ; there is a white narrow line in the 

 middle of the sixth segment ; the apical entirely white above ; the 

 second and third ventral segments are red. 



LAKV^ OF LYGMNA CORYDON AND THEIR 

 ASSOCIATION WITH ANTS. 



By a. L. Rayward. 



When at Pieigate on June 18th last, I was fortunate enough 

 tO find on the Hippocrepis comosa, which is abundant on some 

 of the hillsides there, a number of almost full-grown larv?e of 

 L. corydon. 



Of some thirty or more larvae thus obtained, most, and in 

 fact nearly all, had ants — all of the same q-^qciq^, Formica flava — 

 upon them ; and in one instance where the comosa was growing 

 on the crown of an ants' nest, two larvae found resting on two 

 adjacent leaves of the food-plant were literally covered with the 

 ants, more than twenty being counted on one of them. 



Subsequent examination with a lens at home disclosed the 

 fact that the transverse gland, or sac, present on the dorsal area 

 of the seventh abdominal segment of the larva of L. avion — as 

 reported by Mr. F. W. Frohawk (Ent. xxxvi. p. 59), and known 

 to exist in other species of Lycaenidte, was well developed in 

 these larvae of corydon, and the following interesting demonstra- 

 tion of its function was obtained. 



An ant was placed in proximity to one of the larvae which 

 was being examined under a microscope, and it at once began 

 to run to and fro about the body of the larva, waving its 



