258 
XVII. 
AUGUST 1st. 
Zebra Hawk-moth — its resemblance to a Humming-bird. — Grey Hawk- 
moth. — Beautiful Noctuse. — Eggs and Larvae of Zebra Hawk. — Diurnal 
Insects. — Conops. — Six-spotted Blue Hawk-moth. — Great spangled 
Fritillary. — Camberwell Beauty. — Archippus Butterfly. — Clouded Sul- 
phur.' — Canadian Pearl-fly. — Humble-bee Hawk-moth. — Scarlet-fly. — 
Sheep Gad-fly. — Horse Gad-fly. — Humble Bees' Nest. — Hay-making. — 
After-grass. — Meadow Frog. — Bull Frog. — Toad. — Tree Frog. — Jerboa 
— Becomes torpid in Winter. — Field Locusts. — Rattling Locust. — 
Wasps' Nest. — Hair Grass. — Virginian Deer — its Grace and Beauty — 
Wide Locality — Timidity — Artifice. 
Charles. — I have found the blossoms of the Milkweed 
( Asclepias ) very productive of lepidopterous insects. The 
large Zebra Hawk-moths have been very numerous : I 
caught on one evening eight, and on another seven of them, 
and saw many more. What a very striking resemblance 
exists between these hawk-moths and the humming-birds ! 
their straight, arrowy flight, their sudden arrest in front of 
a flower, the rapid vibration of their wings, the insertion of 
their long tongue, the glancing of their bright eyes, their 
loud hum, their jealous alarms, and even the shape of their 
bodies, and their size, are so exactly a counterpart of the 
Ruby throat, that at first one is tempted to think it is actually 
a humming-bird protracting his nectar-seeking excursions 
into the night. Among these flowers, almost immediately 
after sunset, we hear a loud humming, and looking to the 
