258 PSYCHE. [September .8,8. 



developed throughout. Lateral lobes nearly as deep as long, the dorsal 

 and ventral halves not strongly contrasted in color. Tegmina sublanceo- 

 late, tapering toward apex, about twice as long as wide (Fig. 37b). 

 Metepisternum lacking distinct pale streak. M. scudderi. 



i'. Tegmina much longer than pronotum. 



3. Large, robust; hind femora 16 mm. or over (usually 18-19). Dorsal area 

 of closed tegmina separated from lateral area by a pale streak which some- 

 times suffuses entire dorsal area. ..... Al.femoratus. 



3'. Smaller; hind femora not over 14 mm. 



4. Lower valves of ovipositor about straight, the lateral tooth nearly or 

 quite obsolete (Fig. 45a). Interspace between mesosternal lobes 

 transverse. Tegmina maculate with dusky. Hind femora conspicu- 

 ously banded on outside and cherry-red within at base. M. punctulatus. 

 4'. Lower valves of ovipositor with the apex more or less distinctly 

 decurved, and with a distinct lateral tooth midway of the lower outer 

 margin (Figs. 36a, 40a, etc.). 

 5. Interspace between mesosternal lobes longitudinal or quadrate. 

 Species with tegmina usually passing the hind femora, the body 

 relatively slender, the pronotum when seen from side often 

 depressed at the principal sulcus, with smaller, uninflated pro- 

 zona (Fig. 36c). 

 6. Tegmina more or less flecked with dusky and pale spots 

 along the middle. Hind femora usually showing more or 

 less distinct fuscous bands, at least on the dorsal side. 

 Upper valves of ovipositor angulated at base of scoop (Figs. 

 42a, 40a, etc.) . 

 7. Prosternal spine nearly cylindrical, the tip bluntly 

 rounded, often bulbous (Fig. 4od) . Cerci once and 

 a half or twice as long as wide, sharply pointed, some- 

 what acuminate, the sides slightly concave (Fig. 40a) . 

 Ovipositor seen from side with the basal part of scoop 

 longer, the angle between scoop and stem more obtuse. 

 Hind tibiae red. Hind femora largely or wholly lack- 

 ing transverse dusky bands except on dorsal part of 

 inner face. Mid-carina of pronotum frequently distinct 

 on prozona. .... M. fetnur-rubrum. 



7'. Prosternal spine tapering, the tip pointed (Fig. 36d). 

 Cerci shorter, only about one and one-third times as 

 long as wide, rather dull at tip, the sides straight or 



