330 ENTOMOLOGICAL NEWS. [Oct., '07 



in general to one genus — then must follow, firstly, that all 

 sorts of caterpillars of the Lycaenid family must be examined, 

 and then that not only the positive condition — the verifying 

 of such organs, but also the negative (non-existence) is 

 very important. The great wealth of species of the family 

 Lycaenidae and the very secluded habits of the caterpillars set 

 very narrow limits to the first examination. In the collection 

 of Dr. Staudinger I have been able to examine 45 Lycaenid 

 caterpillars all belonging to the palaearctic fauna, and I must 

 consider, according to present experience, that I have before 

 me one of the greatest, if not the greatest, caterpillar collec- 

 tion. The much smaller one, which Mr. F. Griebel Speier,* 

 was good enough to send for my inspection, contained also 6 

 further specimens of the tokenless species. Together, with 

 all the species mentioned in the literature, we know about 85 

 specimens, a very small number compared with the great 

 wealth of species in the family. We can gather from this 

 how valuable every increase in knowledge is, even though of 

 only one species. Especially with regard to the non-European 

 species, we are entirely dependent on the literature for infor- 

 mation ; and just in this, it would be most important to receive 

 material for comparison. 



We can undoubtedly consider as myrmecophilous the follow- 

 ing species : f 



Thecla tengstroemi Ersch. ! 

 Rapala schistacea Moore. 

 Lycaena admetus Esp. ! 



amanda Schu. ! 



areas Roth. ! 



argyrognomon Bergstr. ! 

 var. aegidion Meissn. 



argus L. (aegon Schiff. ) 



arion L. 



astrarche Bergstr. 



caton Bergstr. ! 



cellargus Rott. / 



Lycaena corydon Poda. 

 cyllarus Rott. ! 

 damon Schiff. ! 

 escheri Hb. ! 

 eumedon Esp. ! 

 hylas Esp. 

 icarus Rott. ! 

 jolas O. ! 

 melanops B. ! 

 melissa Edw. 

 minimum Fuessl. 

 orion Pall. ! 



* Whom I here thank heartily for his great kindness. 



t In the species marked / I have been able to partly verify, partly re-examine the pres- 

 ence of the aperture or slit and tentacles. The sequence of genera I owe to the kindness 

 of Prof. Courvoisier, Basel. It is founded on his studies of the veins of the wings of this 

 family. 



