Araneides of the United States. 449 
THOMISUS? TENUIS. 
Plate XXIII. Fig. 12. 
Description. 'Testaceous, downy ; cephalothorax with a 
longitudinal white band, and a tuft of hair between the eyes ; 
abdomen with two interrupted longitudinal whitish fillets, four 
long nipples; feet bristly, 2. 1.2 3. | 
Observations. 'This is undoubtedly congeneric with my 
Thomisus dubius. But knowing nothing of their webs nor of 
habits, | still refrain from making any generic distinction. 
These will probably form the type of a new sub-genus. This 
one was found enclosed in the clay nest of a Sphex. 
. Habitat... Alabama. 
Genus Crvuzriowa. Latr. 
Characters. — Cheliceres long, fang moderately long ; 
maxille parallel, wider above the insertion of the palpi, lip 
widest in the middle ; eyes eight, equal, in two rows, the 
lower one nearly straight ; feet, the fourth or the first pair 
longest ; body usually of a pale or livid color. 
_ Habits. Araneides sedentary, watching their prey, and 
Inclosing themselves in silk tubes ; cocoon orbicular. 
Remarks. This sub-genus like Thomisus, cannot be char- 
acterized with any precision, owing to the variations in the 
form of the trophi, the position of the eyes, &c. It is nev- 
ertheless a natural subdivision of Aranea. The species com- 
Posing it have nocturnal habits; little therefore, is known of 
their history. They dwell under leaves, under bark or stones, 
Where they may be found in silk tubes, from which they 
seldom issue during the day. proe e o: 
Tibet- Daxapzs. Eyes, posterior row bent toward the 
base, fourth pair of legs longest, then the second. 
: 1. CLUBIONA PALLENS. 
Plate XXIII. Fig. 13. 
white ; abdomen varied with plumbeous 
T. 
- Descri iption. Livid 
