N. . 1 Ji5. REVISION OF THE GENUS TRlMEROTROPIS—McNEILL. 421 



i at first glance they seem to have little in common, as far as color is con- 

 cerned. It appeal's to differ fvom frrrt/g hi ea as follows: Size smaller, 

 J color distinctly cinereous, with no suggestion of reddish-brown; tegniina 

 \ with the posterior field cinereous or whitish, entirely impunctate, the 

 usual bands therefore limited to the anterior half, or at least to the 

 anterior and middle fields; scutellum as in that species, but median 

 carina wanting or extremely faint. 



Length of body, male, 17 mm., female, 25 mm.; length of tegmina, 

 male, 18 mm., female, 25 mm.; length of posterior femora, male, 10 

 mm., female, 14 mm. 



One male (type). Placer County, California, September, Bruner's 

 collection; one male and one female. Placer County, California, Sep- 

 tember, and San Francisco, California, U. S. National Museum. 



If I had not very much restricted Conozoa I should still be compelled 

 to remove this species from that genus, as it has none of the charac- 

 ters of that genus except the coloration of the tegmina, and that is 

 quite as suggestive of the pattern peculiar to TrirnerotroplM. 



TRIMEROTROPIS THALASSICA Bruner. 



Tr erotropis ihalassica Bruner, Proc. U. S. Nat. INIns., XII, 1890, p. 72. 



I am unacquainted with this species and unable to place it with cer- 

 tainty, but it apparently belongs to the group Ccerideipes. I give 

 Bruner's description somewhat abbreviated where the characters 

 given are common to the group: 



About the size of Trimeroiropis vinculata Scudder, varying in color from dark to 

 griseo-testaceous, with the colored portion of the wings sea-green; wings and tegmina 

 but dimly banded; posterior tibife deep co?rulean, with basal annulus of dirty whitish. 



Head, when seen from in front, as broad above as below, a little longer than com-, 

 mon with the species of the genus; the eyes rather large and prominent, separated 

 above by the flat (female) or slightly sulcate (male) vertex; pronotum somewhat 

 smoother than usual, the anterior lobe but gently raised above; the median carina 

 faint and rather equal; posterior angle slightly acute (male), about a right angle 

 (female). 



CITRINA group. 



Color various shades of brown, usually inclining to red, with plain 

 traces of the usual tegminal bands present, well defined if faint or with 

 strongly contrasting colors if the spots are imperfectly segregated. 

 Scutellum of the vertex at most moderately sulcate, broad, very rarely 

 a little longer than broad, usually as broad as long, plainly less than 

 the short (male) or long (female) diameter of the eye. Pronotum with 

 the median carina low, even on the prozone, and not always bilobed 

 (when seen from the side); lateral carinse absent, except a trace on the 

 anterior of the prozone; metazone very rarely as little as once and 

 a half, usually twice, as long as the prozone; lateral lobes without a 

 tooth at the lower posterior angle; tegmina with the intercalary vein 



i 



