1892.] The Striped Harvest-Spider. 1003 
TABLE IV. LIOBUNUM vITTATUM SAY. MALE. AGRICULTURAL COLLEGE, Miss. 
| Measurements of body. eae L’n’th 
No of of legs 
; of | Remarks. 
naea Length Breadth| Height| I | II | II | IV | palpi 
1 y 5 3.6 46 
2 7.5 4.5 8.5. | 47 | 90 | 46 | 65 | 75 
7.25 4.75 | 6.55 | 46.5] 90 | 46 | 65.5 
In Tables III and IV we have the two extremes in the size 
of the species, so far as my specimens show it. In the presence 
of these alone one would unhesitatingly decide that they 
belonged to two well marked species. The fact that in size of 
body the Mississippi form is nearly one-third larger; and that 
the first, third and fourth pairs of legs are considerably more 
than twice as long, while the second pair is nearly three times 
as long would in the absence of intermediate forms, fully 
justify such a separation. Buta reference to Tables I and II 
rawn up from specimens taken about half way between 
Dakota and Mississippi shows that the size of the species in 
those localities is intermediate between the two extremes, the 
second pair of legs in central Illinois averaging 50.1 mm. and 
in central Ohio 69.8 mm. against 34.5 mm in South Dakota 
and 90 mm. in Mississippi. 
The measurements of individual specimens from various 
localities given in Table V below indicate that the size of 
body and length of legs varies greatly with the locality, as a 
rule the body becoming larger and the legs longer as we go. 
southward. $ 
TABLE V. LIOBUNUM VITTATUM SAY. MALES FROM VARIOUS LOCALITIES. 
| Measurements of body. rare pe L’n’th 
Locality. | OF 
| Length [Breadth] Height; 1 | 1 | 111 | IV | palpi 
Towa (Ames).........-+. = ie E Ek BE E EO ee 
S. Maine (Orono)...... 3.7 3 32 | 60 | 33 | 44 | 6 
N Ilinois (Normal)..| 6.5 4 3 31 | 59 | 31 |45 | 67 
N Shio Prookiya)... 55 4 3.1 |35 | 67 | 35 | — a 
Siena yii rarm stows j 6 4.2 3 40 = 40 |58 | 64 
S Minois (Cobden) 7 | £ | = [we la 
