454 Materials for a Monograph 



Conn., (Norton.) Mammoth Cave, Kentucky, (Hyatt.) 

 1 ^,2 9. 



* 2. T. DORSALIS. 



Decticus dorsalis, Burm., Handb. d. Ent; 11. 713. (1838.) 

 Mass., (Sanborn.) Rhode Island, (H. Coll.) Maryland, 

 (Uhler.) 6 9. 



Among other distinctions between these two species, it 

 may be seen that T. jmchijmerns has the pronotum well 

 rounded behind, while the hind margin of the other is 

 nearly square ; and the ovipositor is longer in T. dorsale 

 than in T. pachi/7nerus, as are also the hind legs. 



ACRYDII, Latreille. 

 OPOMALA, SKRVILLE {emend.) 



* 1. O. BRACHYPTERA, nOV. Sp. 



Above reddish brown, dotted faintly with black, extend- 

 ing a little over the sides ; sides dirty yellowish brown, 

 with a faint dark streak extending from lower border of 

 eye backwards over the lower border of pronotum ; face 

 dirty yellowish brown, dotted faintly with brownish spots ; 

 antennic brown, darkest toward tip ; legs reddish brown, 

 tarsi darker, tibiae with black tipped spines ; hind femora 

 with a row of black dots on upper edge, terminal lobe 

 black ; hind tibia; at base and on under side toward the 

 tip, black ; wing covers yellowish brown ; vertex of the 

 head rather prominent, suddenly swollen in advance of 

 the eyes, from thence sloping to a blunt rounded point, 

 the edge upturned, and the median ridge prominent and 

 sharp, becoming rounded on the head ; wing-covers but 

 little more tlian half the length of body ; wings very short, 

 nearly abortive. 



Length of body, 1.05 in. ; of antenna?, 46 in. ; of vertex- 

 .053 in.; of hind femora, .52 in.; of wing-covers, .42 in 

 of wings, .1 in. 1 J. 



Princeton, Mass. (S. II. S.). 



