70 



U.S. NATIONAL MUSEUM BULLETIN 259 



different occasions associated with S. emarginatus, the latter species, 

 however, being much less abundant. 



Collections haA^e been made during all months of the year except in 

 September, October, and January, but ovigerous females were present 

 only in collections made between March and August. Samples con- 

 tained 25 ovigerous females that ranged in size from 5.25 mm to 



CD 



UJ 



< 3 



St Antenna 



4 



12 13 14 



5 6 7 8 9 10 11 



STANDARD LENGTH, MM 



Figure 16.— Relation of antennal length to standard length (body length excluding appen- 

 dages) in Stygonedes allegkeniensis from seeps, springs, and wells in Herkimer and 

 Onondaga Counties, N.Y. [Antenna 1 (solid circles), antenna 2 (x's). Regression line 

 calculated by the least squares method.] 



