3(58 PSYCHE. [April ,896. 



c^. Face more declivent than in the ahernate category ; dorsum of pronotum 

 twice as long as the average breadth, at least in the ^ ; antennae, at least in 

 (J, generally longer than the hind femora, and much more than twice as long 

 as head and pronotum together .... Paro.\y.-\ (Jioridana) . 



Table of tJie N. E. Species of Me/ai/op/i/s : Males. 



a'. Tegmiiia no longer or scarcely longer than the pronotum. 



b'. Interspace between mesosternal lobes fully twice as long as broad ; median 

 carina as distinct on the prozona as on the metazona ; cerci stout, less than three 

 times as long as middle breadth ...... scudderi . 



\>^. Interspace between mesosternal lobes somewhat longer than broad ; median 

 carina less distinct on the prozona than on the metazona ; cerci slender, at least 

 four times as long as middle breadth ...... ?)iancus. 



a'-. Tegmina much longer than the pronotum, generally surpassing the abdomen, 

 b'. Furcula very much longer than the last dorsal segment from which it springs, 

 usually a third as long as the supraanal plate. 



c^. Subgenital plate with the apical margin notched . . atlanis. 



c". Subgenital plate with the apical margin entire. 



d'. Distal half of cerci less than half as broad as the extreme base; inter- 

 space between mesosternal lobes twice as long as broad femur-rKbriim. 

 d". Distal half of cerci more than half as broad as the extreme base : inter- 

 space between mesosternal lobes not much longer than broad estremns. 

 b^. Furcula feebly developed, generally shorter, at most scarcely longer, than 

 the last dorsal segment from which it springs. 



c'. Cerci of nearly equal width and simple throughout . . fasciatns. 



c'. Cerci of very unequal width or irregular shape. 



d'. Cerci apicall\- turcate with unequal forks, the lower the smaller and 

 sometimes reduced to little more than an angulation; apical mai'gin of 

 subgenital plate with no median tubercle. 



el. Furcula distinct, consisting of a pair of spines as long as or slightly 

 longer than the last dorsal segment ; lower fork of cerci subobsolete ; 

 base of lateral margin of subgenital plate incinye<l . . mi?tor. 



e". Furcula obsolete ; lower fork of cerci slender, but half as long as upper 

 fork ; base of lateral margin of subgenital plate not incurved collinus. 



d'^. Cerci apically expanded and lobate ; apical margin of subgenital plate 

 with a median tubercle. 



e'. Interspace between mesosternal lobes nearly twice as long as broad ; 

 prosternal spine long ; cerci boot-shaped . . . fe?no)-at/is. 



e-. Interspace between mesosternal lobes subquadrate ; prosternal spine 

 short; cerci terminating in a transversely oval tiunid lobe ptinctulatiis. 



