46 PROCEEDINGS OF THE AMERICAN ACADEMY. 



— Lancaster, Aug. 1, Kith City, Aug. 4, Tulare, Aug. 5, and Lathrop, 

 Ang. 17 (25 (J, 17 9 ), which may be called Opeia tetlacea. 



Ii is a Blenderer insect with longer tegmina, which equal (9) or but* 

 pass ( $ ) l 1 1 » - abdomen and reach the base of the geniculation of the bind 

 femora, and with a paler, nearly uniform coloring with Bcarcely any gre< d 

 in it. and immaculate tegmina in the female, where at most they merely 

 have an obscure unbroken fuscous streak in the proximal half of the 

 median area, while in 0. obscura the female tegmina have the median 

 i nearly always distinctly marked with fuscous, broken into quad- 

 rangular spots ; in the latter species the upper half of the lateral lo 

 is generally marked with a broad or narrow fuscous (rarely greenish) 



stripe, ill both sexes, extendi Ii',' ill extreme Cases UpOU the head as a 

 pOStOCular hand; this 18 extremely rare in 0. testacea and obscure at 

 best, though the lateral lobes are occasionally infuscated as a whole; 

 generally the whole pronotnm is uniform pale testaceous; the hind tibial 

 spurs are more slender in the new species, and the face a little more 

 oblique in both sexes. Measurements of average .specimens are as fol- 

 lows. Length of body, <£, 14 mm., 9, 25.5 mm. ; antenna'. J . ~>.7~>, 

 9, 8.9 mm.; tegmina, $, 0.5 mm., 9, 15.5 mm.; hind femora, £, 

 9.4 mm., 9, 15.6 mm. 



Other species occur in Northern Mexico, which appear to be 

 undescribed. 



4. A New Genus of Orphuue. 



Among the Orthoptera brought by Mr. Morse from the Pacific ci 

 is a new form of Orphulae nearly allied to Chloealtis. Our g< uera of 

 Orphulae may be thus separated. 



Table of the United States Genera of Orphulae. 



a 1 . Antenna: relatively short, at most but little longer than bead anil pronotnm 



together; scapular area of tegmina not specially dilated. 

 /<>. Foveolaeof rertea inure or less evident ; prozona not much longer than meta- 

 zona; lateral lobes of pronotnm transverse, thai is, deeper than long; upper 

 ulnar vein of tegmina, at least in male, apically joining the lower ulnar vein at 

 a long distance beyond the end of the basodiscoidal field . . . OrphtdeQa Stal. 



/<-. Foveolffi of vertex wauling; prozona very much longer than metazona ; 



lateral lobes of pronotum longitudinal, longer than or fully as long as deep; 



upper ulnar vein (if tegmina, at least in male, apically strongly arched, joining 

 the lower ulnar vein not tar beyond the end of the basodi8COidal field. 



c 1 . I. aural lobes of pronotnm plane above, meeting the disk at nearly right 

 angles; lateral carina' parallel throughout; tegmina usually much shorter 

 than the abdomen in both sexes Dichromorpha Morse. 



