LEPIDOPTKRA AT RANNOCH IN 1905. 53 



Ilcliconius tumatumari, u. sp. (PI. II. fig. 2). 

 Fore wing black, the base crimson. A large yellow blotch within 

 the cell, divided from the red area by a roundish black blotch. Dis- 

 coidal blotch irregular black, joining another black mark just beyond 

 the cell between veins 3 and 4. Beyond the cell are elongated patches 

 of sulplmr-yellow radiating round to the costa. Between veins 2, 3 

 there is a break with the ground colour, and just above vein 2 there is 

 another yellow mark, sometimes elongated, and joining the yellow 

 area with the cell. At the extreme angle of the tornus is an elongated 

 yellow spot, and immediately before apex are three yellow spots, the 

 centre one of which is usually most distinct. Abdomen not marked 

 above, and with a white line running down the centre beneath, 

 bordered on either side with a very fine more or less indistinct white 

 line. Expanse 97 mm. 



Hab. British Guiana. 



The species is related to H. cyhele, and from the very few 

 specimens seen is tolerably constant. 



Heliconiiis silvana var. divisus, nov. (PI. II. fig. 3). 

 Fore wing as in typical silvana. Hind wing with the transverse 

 black area divided by a band of the brownish ochreous ground colour 

 as far as vein 5, where there is placed the usual lower yellow spot close 

 to the margin. Both the upper and lower of these spots well defined, 

 but the indications of the remaining marginal spots very ill defined, 

 and hardly distinguishable beyond vein 3. The upper portion of the 

 black area, above the band of ground colour, more arched than in 

 typical silvana. 



This form is probably a rare aberration only, and not con- 

 fined to any one locality. Similar specimens occur on the 

 Lower Amazon, as well as in British Guiana, from whence the 

 form is now described. 



LEPIDOPTEEA AT RANNOCH IN 1905. 

 By E. a. Cockayne, F.E.S. 



1 (Concluded from p. 40.) 



In the birch woods, Drepana lacertinaria and D. falcataria 

 were met with ; the former, much the commoner of the two, was 

 rather darker than the usual English form. Falcataria in this 

 district is a most lovely insect. It has an almost white ground 

 colour, crossed by an intensely dark-brown stripe curving round 

 to the hooked wing-tip. Cymatophora duplaris was abundant on 

 the smaller branches of the birches. All were more or less 

 melanic, some nearly black. 



Coremia salicata and Emmelesia blandiata were common 

 locally, the former commoner near the tops of the hills. 



On June 23rd Psodos trepidaria was flying in profusion on a 



