294 



PSYCHE. 



[January, i<yo2 



black. Pronotum rather more than half as 

 broad again as long, equal, with nearlj paral- 

 lel sides, feebly villous, black throughout 

 except for a delicate ferruginous margination 

 in front, the front margin truncate, the hind 

 margin faintly convex, with a median im- 

 pressed line fading on posterior third, the 

 lower margin of lateral lobes gently and ob- 

 liquely- convex. Tegmina covering i$) or 

 nearly covering (?) the abdomen, testaceous, 

 the mediastinal vein with from two to four 

 branches, the post-specular area of male teg- 

 mina rather large ; wings usually not sur- 

 passing the tegmina but sometimes caudate. 

 Legs testaceous, the hind femora not very 

 stout, the hind tibiae with seven or eight 

 spines on the outer side, the upper inner 

 calcar scarcelv shorter than the intermediate 



calcar. Ovipositor a little longer than the 

 hind femora. 



Length of body, $, 17.5 mm., $, 17 mm.; 

 pronotum, ^ $, 3.25 mm.; breadth of same, 

 (J, 5.25 mm., ?,5mm.; length of tegmina, (J , 

 10.5 mm., ?, 9 mm.; hind femora, $ ^ , \i 

 mm.; ovipositor, 13 mm. 



6 (J , I 9 ; Beaver Dam, Utah, April 

 (Palmer) ; Ehrenberg, Ariz. (Palmer) ; 

 Ft. Whipple, Ariz. (Palmer). 



About a third of the specimens seen 

 are macropterous. 



There remain the species of the 

 southern United .States east of the Rocky 

 Mts. These may be separated by the 

 following table : — 



a '. Pronotum wholly black. 



b . Pronotum about half as broad again as long. 



(■'. Very large species, about 25 mm. long, with convex hind margin to the 

 pronotum, and 7-8 spines on hind tibiae .... firmus sp. nov 

 c'^. Medium or small sized species, not often exceeding 20 mm. long, with 

 nearly truncate or faintly angulate hind margin to the pronotum and 5-6 spines 

 on hind tibiae .... abhrcviatus Serv., pennsylvankus Burm. 



b -. Pronotum nearly twice as broad again as long. . . integer Scudd. 



a ^ Pronotum prevailingly light or with light markings. 



/; ^ Wholly testaceous, more or less marked with fuscous ; first joint of antennae 



projecting slightly beyond front of head. .... domesticus \Ja\x\. 



b '^. Prevailingly dark ; first joint of antennae not projecting beyond front of head. 

 c '. Head except vertex testaceous ; hind tibiae relatively short; with 5-6 

 spines on margins. ........ personatus Uhl. 



c'^. Head wholly black ; hind tibiae relatively long, with 7-8 spines on mar- 

 gins .......... nibens sp. nov. 



G. asshniHs Fabr. is not included in 

 this table, as I have seen United States 

 specimens only from California, but it is 

 reported to occur in the Gulf States. 

 The distribution of all the species of the 



table excepting the first and the last 

 has already been given or referred to. 

 The two remaining species~may now 

 be described. 



