468 PROCEEDINGS OF THE ACADEMY OF [Oct., 



than in the types, although of essentially the same form. The inter- 

 space between the mesosternal lobes appears to be broader and less 

 longitudinal in both sexes of the Los Angeles County material. It is 

 possible that a comparison of typical material with the series in hand 

 may make necessary their separation. 



There is a considerable amount of individual variation in size, 

 which is not at all correlated with any particular elevation. The 

 coloration is somewhat deeper in several individuals than in the others, 

 but it is quite characteristic in all. The species was not common. 



Melanoplus sonomaensis Caudell. 



A single pair of this species was taken in a garden at Santa Cruz, 

 California, August 28. The only previous record of the species is 

 that of the types from Glenellen, Sonoma County, California. 



In the garden the species was noticed to be extremely plentiful, 

 especially about the strawberry bed. 



Melanoplus gracilipes Seudder. 



A single female from Miramar, July 31, is referred to this species, 

 which was previously known only from Los Angeles. The individual 

 was taken near the shore, along the border of a field of dry trampled 

 grass. Further extensive search failed to reveal any other specimens. 



Melanoplus pacificus (Seudder). 



An interesting series of twenty specimens of this species were col- 

 lected in the Yosemite National Park, between 4,000 and 6,000 feet 

 elevation, at the following localities: Yosemite Valley, 4,100 to 4,500 

 feet, September 1, two males, one female; Sentinel, August 31, two 

 males, six females; Eight-Mile Camp, September 1, one male, four 

 females; Grouse Creek, September 1, one male, one female. 



When compared with a pair of this species from Sissonsand Dunsmuir, 

 Siskiyou County, California, the Yosemite males have the caudal 

 margins of the cerci more thickened and terminating rather abruptly 

 about two-thirds the distance from the base, the apical third being 

 equally slender in males from both localities. A single male in the 

 Academy collection from the Yosemite Valley, date and collector 

 unknown, fully agrees with the larger series in the above mentioned 

 character. 



The coloration shows little variation except in the depth of the light 

 and dark colors, most of the palest individuals being from Sentinel. The 

 postocular bar is strongly marked in all the males and a number of 

 the females, being distinctly or hardly indicated in the remainder of 

 the latter sex. In several females the postocular bar is represented 



