/NSECTS AND THEIR NEAR RELATIVES. 
27 
F. The side eyes not as far apart as the middle eyes; a 
considerable space between the eyes and the front edge 
of the head. Spiders making irregular webs. p. 32. 
DlCTYNIDiE. 
FF. The side eyes as far or farther apart than the middle 
eyes; eyes very close to the front edge of the head. 
Spiders making regular webs. ( Uloborus .) p. 38. 
ULOBORIDiE. 
EE. With neither cribellum nor calamistrum. Spiders mak¬ 
ing webs in which there are no curled threads. 
F. Eyes not near the front edge of the head, the space be¬ 
tween the two being greater than that occupied by the 
eyes (Fig. 37). Spiders that spin irregular webs, in or 
near which they live, hanging back downwards, p. 34. 
Theridiid^e. 
FF. Eyes near the front edge of the head, the space be¬ 
tween the two being less than that occupied by the eyes 
(Fig. 42). Spiders that make regular webs, consisting 
chiefly of lines radiating from the centre, and a spiral or 
looped sticky line. p. 35. Epeirid/E. 
3 B. The eyes unequal in size and arranged in three or four rows. 
C. With cribellum and calamistrum. Spiders which make webs. 
{Hypttotes.) p. 38. Uloborid;e. 
CC. With neither cribellum nor calamistrum. Spiders which do 
not spin webs for catching prey. 
D. The largest eyes not in the front row. ( Running spiders .) 
P- 4°. ; .LYCOSIDiE. 
DD. The largest eyes in the front row. ( Jumping spiders .) 
p- 4 2 . AttidjE. 
Family Theraphosid^E (Ther-a-phos'i-dae). 
The Tarantulas and the Trap-door Spiders . 
Those who live in the warmer parts of our country know 
well the large spiders commonly called Tarantulas. These 
are the giants among spiders, some of them being the largest 
known ; but some species of this family are not very large. 
They are dark-colored, hairy spiders, and can be distinguished 
from the other families mentioned here by the fact that the 
