( ex ) 



on the leaves of Anacardium occidentale. The moth is a far 

 better mimic of the female than the male Hesperid, the 

 increased perfection of the likeness to the female being 

 brought about by the white fringe at the apex of the fore- 

 wing and the pale streaks which mark a sub-marginal section 

 of all the nervures of both wings. The latter coloui'ing pro- 

 bably produces on the wing a superficial likeness to the pale 

 iridescent radiate streaks by which both wings of the female 

 Hesperid are characterised. It is also noteworthy that the 

 ends of the palpi of the Messaga stand out in front of the 

 red head in a manner which strongly suggests the very 

 characteristic appearance of the Hesperid. A similar differ- 

 ence in size betAveen model and mimic is well known in many 

 examples of mimicry. 



A MYRMECOPHiLOUS CoLEOPTERON. — Mr. DoNiSTHORPE ex- 

 hibited a specimen of Thorictus foreli, var. boyinairei, Wasm., 

 a small beetle, fastened on to the antenna of an ant, 

 Myrmecoci/sfus hicolor, F. He remarked that all the 

 Thorictidae were Myrmecophilous. They chiefly lived with 

 Myrmecocysti and a few other ants. They fastened them- 

 selves by the mandibles to the scape of the antennae of their 

 hosts with the head directed towards its base. Some species 

 had yellow hairs and were licked by their hosts. An ant 

 might have one or more Thorictus on each antennae, but 

 only the ants in the interior of the nests had the beetles 

 attached, as in the case of the Acai'i of the genus Antennophorus 

 and their hosts. 



Mr. Donisthorpe also exhibited a specimen of the Culicid 

 Harpagomyia splendens, Meig., with the ant Cremastogaster 

 difformis, Smith, from Batavia, where Jacobson had observed 

 the fly being fed by the ant, and photogi^aphs of the living 

 flies being fed by the ants. 



He mentioned that both these myrmecophilous species had 

 been kindly given to him by Prof. Forel. 



Living Coleopterous Larva, — Mr. H. M. Edelsten ex- 

 hibited a living Buprestid larva (species uncertain) which had 

 been found in Messrs. Allen and Hanbury's works at Ware 

 in roots of sandalwood. 



The PiERiNE Genus Pinacopteryx. — Dr. F. A. Dixey 



