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見蟲舉 雑誌 第參卷 第壹號 



The lood plants ot this insect in iturope are Cl,ataee"US OXvacantha 

 (hawthorn), Prunus spinosa (common sloe), Malus communis (apple), 

 Pirns communis (pear), Prunus avium (cherry), etc., but in Hok- 

 kaido only Malus communis, Crataegus chlorosaruka are enumer- 

 ated as the food plants. 



Our Japanese specimens compared with the European examples are 

 much larger, measurinp- 24 _ 27 mm. in the body-length and 70-76 mm. 

 in the wing-expanse. But I have only a sinpde specimen {(^) from 

 jnokkaido having the length 20 mm. and the wincr-expanse 48 mm. 



3. Euchloe (Anthocharis) scolymus Butl. 



This is one of the most lovely and weak species 01 butterflies of Japan, 

 coming only once in the year in the early spring. 



This insect was not rare some years before in the neighbourhood of 

 Sapporo as Mt. Moiwa, Maruyania, Yamahana, etc, but now it became 

 quite rare. 



4. Zephyr us sapliirina Staud. 



According to Prof. Dr. S Matsumura, Z. saphllina Staud., Z. 

 butreli Fenton, Z. signata Butl. and Z ibara Butl. were not un- 

 common somewhat twenty years ap"o near Sapporo, but now they are 

 very rare and truely I have not captured any of them except saphirina 



In the first part of July we can still capture some specimens of this 

 insect near Sapporo, resting on the leaves of ftuerCUS dentata, which 

 being the food plant of it. 



5. Zephyrus butleri Fenton. 

 There are now only two specimens in the collection of Proi. ijr. S. 

 Matsmura, one of which beino- captured near Sapporo in 1909 by Prof. 

 Dr. S. Matsumura and the other one being taken by Mr. T. レ sHiki at 

 Mcii'uyama near Sapporo in I916, It was rare from the former days 

 and since 1890 three more specimens were captured by the same profes- 

 sor, but they were given off for the exchange. 



6. Zephyrus signata Butler 

 There are only two specimens in the collection of Prof, S. Matsumura 



