THE MOUNT DESERT REGION 17 



forms. The habits of a species are given when known, but 

 with the larger number of species the life-history is not 

 known. 



The following list of species shows one feature that might 

 seem to some misleading and that is the large number of 

 Diptera in comparison with some of the other orders. The 

 reason for this is that the writer, being a dipterist, has been 

 able to determine the greater part of the species collected. 

 The Hymenoptera would probably prove as numerous if all 

 of the species could be determined. The number of species 

 here recorded seems quite large for an island of this size 

 (about 100 square miles) and shows how favorable the varied 

 conditions are for insect life. The number of species actually 

 existing on the island is somewhat problematical, but a cout 

 servative estimate would be about 5000. In the material col- 

 lected are still several hundred unnamed species, largely 

 among the smaller hymenopterous parasites, many of w^hich 

 have not yet been studied or even named. Each day in the 

 field for years to come would add something new to the list. 



"So away! for the hunt iu the fern -scented woods 

 Till the going down of the sun; 

 There is plenty of game still left in the woods 

 For the hunter who has no gun. ' ' 



Sam Walter Toss. 

 SUMMAEY 



The number of species and varieties recorded in each 

 order : 



Orthoptcra : Crickets, grasshop- ; Homoptera: Cicadas, leaf hoppers, 



pers, locusts, etc 28 aphids, etc 121 



Plecoptera: Stone flies 12 j Mecoptera: Scorpion flies 3 



Ephemerida: Dayflies or May flies 5 Trichoptera. • Caddice Siies 31 



Odonata : Dragon flies 46 Lepidoptera : Butterflies and moths 521 



Megaloptera : Dobsons, etc 3 j Strepsiptera : Twisted winged in- 



Neuroptera: Aphis lions (lace- sects 2 



wings), ant lions 17 | Coleoptera: Beetles and weevils. . 469 



Corrodentia: Psocids, book lice. . . 19 Hymenoptera: Sawflies, wasps, 



Mallophaga : Bird lice 93 bees, etc 692 



Tliysanoptera: Thrips 1 Siphonaptera: Fleas 1 



Hemiptera: True bugs 123 Diptera: Flies, mosquitoes, etc.. 1197 



3384 



