BEM1PTKRA HOMGPTEfcA JASSIDES. 311 



of the :\]>irnl half: thev ;irc considerably more t!i;in three times ;is long as 

 broad, suhe(|iial throughout, with well nnindcd apex. 'Flic :>hdomen is 1 

 oval, large-t about one-third wav I'rrni base, tapering beyond to a bluntly 

 pointed tip. 



Length of body, 2.75"""; greatest breadth, 0.9"""; length of tegmina, 

 2.5""" ; breadtli, 0.75 mm . 



Green River, Wyoming. One specimen, Nos. 114 and 12G, Dr. A. S. 

 Packard. 



ACOCEPHALUS German 



Heer has described two species of this genus from the Miocene beds of 

 Radoboj, and two of our American fnssils are referred dubiously i<> the 

 same group, though thev ditl'er considerably from each other in the general 

 form of the body. lieer's species, too, strictly interpreted, should lie placed 

 elsewhere, though they are certainly near Acocephalus. 



Table of the spicies of Acocephalus. 



Slender species ; body more tlian lliree times as loug as broad .............................. \. A. adu . 



Stout species ; body less than three, tiuirs as limn as broad .............................. -J. A. 



I. ACOCEPIIALUS AD.fi. 



PI. 0, Fig. 29. 

 Acocephalus adce Scndd., Bull. U. S. Geol. Geogr. Surv. Terr., IV, 771 



Two specimens represent the body of apparently a species of Acoceph- 

 alus. The head projects forward in a triangular form, is rounded at the 

 extreme apex, a little bmadei than long, and nearly twice as broad between 

 the small eyes as its length in advance of them. The body is slender, the 

 abdomen slightly tapering, miiuded at tin- apex. The te-mina extend a 

 short distance beyond the b.idy with parallel longitudinal veins. 



Length of body, 5. -Jo"""; breadth of head, 1.1 '; ..f mi. Idle of abdo- 

 men, 1.3 mra . 



Green River, Wyoming. Two specimens, N'os. 7-, !(>(), F. ( '. A. Rich- 



ardson. 



ACOC] PHALDS CALLOSUS. 



I 'I. Ill, Fitf. I',. 



Although the ligurc seem-; t<> show a bluntly rounded head very 

 uncharacteristic of Acocephalus, it evidently n^uli- from the nio!e of prcs- 



ervation, the imdv being crushed on a thr ..... t'onrths view, obscuring the 



angularity of the front, which a careful examination of the specimen itself 



