2l»4 THK CANADIAN ENTOMOLOGIST. 



In general, specimens from the south are larger, and have the 

 ovipositor actually and proportionally longer than those from the north or 

 the coast, but, as noted above under Occident ale, those from the Shasta 

 region have relatively long ovipositors. 



This variation in size and proportions is very noticeable when material 

 is arranged in series according to locality, in the examples before me there 

 being less range of variation from the same locality than in specimens of 

 f aui at um from New England. Owing to this and to the difference 

 between the southern and the coastwise and northern examples, there 

 appears to be a tendency toward the formation of local races. Some idea 

 of these differences may be gained from the following measurements of 

 the hind femora and ovipositor of the material from various localities : 



West Berkeley. Mill Valley. Tenino. Divide. Drain. 



H. fern.. 10,5-12 9.5 11. 5-12 11-12.3 9.3-10.7 



Ovip ... 8-9 8 8-9 7.5-8.5 7.5-8 



Gazelle. Sisson. San Bernardino. Colton. Palm Springs. 



H. fern.. 9.3 10.6-11.5 i3-3- x 4 12-14. 5 II -3~ I 4 



Ovip.... 8 9—9.7 1 1— 1 3 10-13 10-13 



The long-winged examples consist of 6 <£ , 5 $, from Palm Springs, 

 San Bernardino, Colton and Kern City, in California, and of 4 £ from 

 Ashland and Glendale, Or. ; in two of the latter, however, the wings 

 exceed the hind femora but little. For this form, especially as found 

 in the south, I propose the name production. It resembles fasciatum 

 from the south-eastern States very closely except for the much longer 

 ovipositor. 



6 1 $ y 59 9 » California, from July 10 to Sept. 4, at Palm Springs, San 

 Bernardino, Colton, Los Angeles, Kern City, Lathrop, West Berkeley, 

 Mill Valley, Sisson, and Gazelle; Oregon, from Sept. 7 to 12, at Ashland, 

 Glendale, Drain, and Divide; Washington, Sept. 24, at Tenino ; in grass 

 and sedge along streams ; collected by A. P. Morse. 



Key to Species. 



Stouter species ; ovipositor of female strongly curved, stout ; subgenital 

 plate of male triangularly excavate Orchelimum agile. 



Slenderer species ; ovipositor of female slender, straight or but little 

 up curved ; subgenital plate of male truncate. 



Hind femora spinose on under side Xiphidium spiiiosum. 



