136 N0BÜK.4.TSU IIAEUMO. 



just stand between those of Kiushiu and Loochoo Islands* (belong to 

 the oriental region), rather nearer situating to the former than to the 

 latter. Twata who had studied the butterflies of this district (Tanega- 

 shima and Yakushima) stated tliat the boundary Hue between the Loochoo 

 Islands and Kiushiu probably lie southwards from these islands. I 

 can expres3 my agi'eement with his opinion. The oriental lepidopterous 

 insect such as Hehomoia (jlaucippz, Junonia almana, J. orithya, Nacachwa 

 atraia, Melanitis phedisrna and the species of the genera, Ccdlklula, Doratojj'era 

 and Nydemera are represented in this district, and no species belonging to 

 the genera Hehomoia, Callidida and Doratoplera which are considered to have 

 origin in the oriental region have hitherto been found in Japan proper. But 

 the most lepidopterous insects distributed over these islands are common with 

 those foimd in the four great islands of Japan and the local form of species 

 comes nearer to that of the palrearctic than to the oriental region. These facts 

 indicatä me the faunal feature of this disti'ict. 



As I have been interested in the insect fauna of this district I made 

 repeated excursions to these islands, one in July 1918 and the other in June 

 1919. In addition to mine the late Dr. T. Miyake made a collecting in 

 August 1909 and the late Mr. K. Habutsu in September 1910. All these 

 materials collected by these two gentlemen have also been placed at my 

 disposal. 



The total number of species enumerated in this paper is 179, of which 

 45 are Hhopalocera and the rest 134 are Heterocera, of which 7 appear to 

 be new to science and their descriptions are given in their proper systematic 

 position. Several examples collected which are midetermined, are not enumer- 

 ated in this paper. I must express my hearty thanks to the late Dr. T. Miy.\ke 

 who offered generously his private list to my study. 



* lucluiling Amami Cbhimn. 



