240 JOHN B. SMITH. 



Maiiieiiitra mcgareiia Smitl). 



Probably a good species, inhabiting the same general region as 

 the preceding, but the material is too scant to speak definitely. 



]flainestra davena Sniitli. 



A good species without doubt, thus far received from Sierra Ne- 

 vada, California, only. I would expect it to extend along the en- 

 tire range, but it may not get into the Cascades, or, if it does, not 

 north of the Columbia River. 



9Iainestra obuigra Smith. 



A good species I am convinced, ranging the lower region toward 

 the Pacific Coast, and may not get into the mountains, or at any 

 rate east of the Cascades and the Selkirks. 



Mamestra petita Smith. 



Also a good species, concerning whose distribution little can be 

 said definitely; Seattle, Washington, and Corfield, Vancouver, are 

 not enough to generalize upon. 

 Mamestra comis Grt. 



A good species without doubt, and it probably entends from Van- 

 couver south well into California; but I do not know just where 

 Soda Springs is in California, hence cannot say whether it is a 

 mountain or coast-line form. 



EXPLANATION OF PLATE X. 



Genitalia of % Mamestra olivacea and allies: all drawings save Figure 7 made 

 with camera lucida, 2 inrh objective at same distance from eye piece, and no 

 attempt has been made to correct distortion caused by mounting. 



1. Mamestra olivacea Morr. 



2. " 

 3. 



4. 

 These figui-es show all the apparent range of variation due to greater or less 

 pressure on the object; figure 4 is the most complete specimen and about normal 

 in position. 



5. Mamestra lucina Smith. 



«. 



7. " altua Smith. Tip of liarpe only made with i-iuch objective to 

 show details of spinulation ; the number of spines is exact. 



8. Mamestra megareua Smith. 



9. ■' obuigra Smith, 

 ip. " petita Smith. 



11. " comis Grt. An imperfect specimen ; too much flattened and 

 somewhat broken. 



12. Mamestra davena Smith. 



