60 THE ENTOMOLOGIST. 



and minimum thermometer) was 67'9'^ ; for May, 74'3° ; for 

 June, 83*8° ; for July, 89 "S^. The highest shade temperature 

 registered this year was 101°, on August 16th. From July 

 onwards the weather is usually hot and dry, with a very 

 occasional violent storm. As much hs 1 inch of rain has been 

 registered in an hour; for example, on June 15th, 1917. 

 Vegetation becomes dried up, and very few butterflies are seen. 



The Salonica hills run to about 1500 ft., and form a good 

 collecting ground in the spring. The Krusha Balkans rise to 

 nearly 4000 ft. at one or two points, and in many places are 

 well wooded, and there is a good water-supply. 



Saracli, which is frequently mentioned in the subjoined 

 catalogue, is about 2000 ft., and forms an ideal locality for the 

 entomologist. I was stationed there in the early summer of 

 1917, and was able to do a fair amount of collecting in deserted 

 gardens and fields run wild. These covered the mountain sides 

 facing south-west. 



Doubtless some interesting species occur in the Struma 

 valley in early summer ; but, under active service conditions, 

 it is impossible to live in the plains, owing to the enormous 

 numbers of mosquitoes, chiefly Anopheles inacidipennis. 



The following observations illustrate the variations of 

 temperature from March to October : 



Daily Shade Temperature (F.) 1917, 



Mean difference between highest in day and lowest at night : 

 March, 19'4°; April, 21'1°; Mav, 20-3°; June, 20-4°; July, 

 22-9° ; August, 23'6° ; September, 28-0° ; October, 22'7°. 

 Greatest difference, 32°, end November, 1917. 



Highest shade temperatures : 100°, July 18th ; 101°, August 

 16th. The records from March to mid-August were taken in 

 the hills. Doubtless much higher temperatures prevailed in 

 the plains. 



Lowest temperature registered since March, 1917, 25^ in 

 November, 1917. 



Rainfall: May, 1*66 inches; June, 2'65 inches; July, 

 0*82 inches. Conditions did not allow e.^act records being taken 

 in other months. 



The comparative seasonal abundance of species may be 



