McNEILI. REVISION OF THE TRUXALIN.^ OF NORTH AMERICA. 235 



B.' Lateral cariiice sub-straight and parallel 3. — Decora, n. sp. 



B.2 Lateral carinas either strongly constricted, or if not they are 

 strongly divergent on the metazone. 



C' Lateral carince more nearly approximate at the second sulcus 

 than at the anterior margin of the pronotum. Posterior mar- 

 gin of the metazone gently angulate or obscurely rounded. Me- 

 dian carina cut decidedly behind the middle. 



D.^ Lateral foveolai of the vertex generally very obscure, always tri- 

 angular and basal. Head not very much shorter than the pro- 

 notum. Antennas as long as (female) or longer than the head 

 and pronotum and not acuminate at the apex. 4. — Spcciosa, Scud. 



D.2 Lateral feveoLx of the vertex distinct and sub-linear. Head 

 much shorter than the pronotum. Antennas scarcely as long as 

 (male) or much shorter than (female) the pronotum, and distinct- 

 ly acuminate at the tip 5- — Tcpanica, Sauss. 



C.2 Lateral carinas not more nearly approximate at any part of the pro- 

 notum than at the anterior margin. 



D.I Median carina of the pronotum cut in the middle. Lateral ca- 

 rin;is of the pronotum gently divergent on the prozone, decidedly 

 on the metazone. Posterior margin of the metazone strongly 

 angulate 6. — OrizabcB, n. sp. 



D.2 Median carina of the pronotum cut behind the middle. Lateral 



carinae parallel on the prozone 7. — Scuddiui', Boliv. 



8. — Punctata, De Geer. 



I. Orphula pelidna, Burm. 



Length (male) 16 -19 mm. (female) .... 20 -24 mm. 



Tegmina (male) .14 -17.5 mm. (female). ... 18 -20 mm. 



Antennae (male) 7 -10 mm. (female). . . . 8.5-10 mm. 



Post. Fem. (male) 9 . 5-1 1 mm. (female). ...12 -14 mm. 



The scutellum does not extend in front of the eyes a distance equal 

 to the width between the eyes, its sides meet in an angle a little 

 greater (female) less (male) than a right angle, a sub-crescent shaped 

 transverse sulcus extends from eye to eye, which is not interrupted by 

 any trace of a longitudinal median carina. The lateral fovoelae are 

 generally quite distinct and deep, elongate triangular in shape. The 

 frontal costa is shallowly sulcate with the walls more divergent than in 

 speciosa. The eyes are from one and one-half (female) to nearly twice 

 (male) as long as the groove below the eye. The antennre are little 

 or not at all depressed, longer than the head and pronotnm, decidedly 



