124 ENTOMOLOGICAL SOCIETY 
he said was smooth with the median carina entire in the new 
species and rough and with the carina incised in pacifica. 
But, as proven by Thomas' original description and by his 
type, which is in the National Museum, Saussure did not 
correctly interpret his species, the characters attributed to 
behrensi really belonging to pacifica. Behrensi Sauss. there- 
fore falls as a synonym of pacifica Thorn, and the insect sup- 
posed by Saussure to be the pacifica of Thomas is unnamed. 
For this form I would propose the name incisa and would 
designate it as a variety rather than a species, the differentia- 
ting characters being variable. 
One male specimen of C. pacifica from Monterey County, 
Cal., taken in August, 1904, by Mr. Coleman, agrees very 
well with the form incisa except that the vertex is much 
less elongate than usual and the body is somewhat thicker, 
giving it something of the appearance of an Encoptolophus. 
It is worthy of varietal distinction and may be called obtusa. 
The species of Chimarocephala thus stand as follows: 
Chimarocephala pacifica Thorn, 
behrensi Sauss. 
Var. incisa Caud. 
pacifica Sauss. (not Thorn). 
Var. obtusa Caud. 
Chimarocephala otomita Sauss. 
DESCRIPTIONS OF NEW CALIFORNIAN ORTHOPTERA. 
Melanoplus sonomaensis n. sp. 
A very small brachypterous species allied to puer and belonging to the 
puer series. Color brownish with dark markings. Head scarcely promi- 
nent in the female, slightly so in the male, reddish brown with piceous 
postocular bands; vertex feebly tumid, scarcely elevated above the 
pronotum, interspace between the eyes about as broad, male, or somewhat 
broader, female, than the basal segment of the antennae; fastigium 
and frontal costa as in puer; eyes moderately prominent, more so in the 
male, longer than the infraocular portion of the genae in both sexes. 
Pronotum with the lateral and median carinae distinct, anterior margin 
truncate, posterior margin obtuse-angulate, almost truncate, especially 
in the female, the lateral piceous band scarcely continued onto the meta. 
zona in either sex. Prosternal spine stout, blunt, slightly inclined back- 
wards; interspace between the mesosternal lobes as broad, male, or 
broader, female, than long; metasternal lobes of both sexes separated by 
a space much longer than broad, but in no ways attingent. Tegmina 
abbreviated, shorter than the pronotum in both sexes, scarcely twice as 
long as broad, apically broadly rounded and not meeting above in either 
sex, though not widely separated. Fore and middle femora somewhat 
