Sept. 1896.] SCUDDER : NoRTH AMERICAN NeMOBIUS. 101 



b^. Tegmina of 9 much shorter than the abdomen ; wings wanting. 

 C. Ovipositor barely arcuate. 



d'. Tegmina of 9 no longer than head and pronotum combined. 



mormonius. 

 d^. Tegmina of 9 distinctly longer than head and pronotum com- 

 bined. 



el. Longitudinal markings of head continuous to extreme back of 

 same ; ovipositor with distinct and well separated teeth at apex. 



toltecus. 

 e^. Longitudmal markings of head interrupted at the crown, the 

 whole back portion immaculate, sharply defined from the portions 

 in front at the summit, which is feebly subcarinate transversely ; 



ovipositor with fine, close, minute denticulations mexicanus. 



c^. Ovipositor distinctly though but feebly arcuate carolinus. 



Nemobius distinguendus, sp. nov. 



Head not very full, castaneous black, with a straight, oblique, bright luteous 

 stripe above the eyes, passing from the antennal scrobes to the back of the head on 

 either side ; eyes not prominent ; antenna blackish fuscous ; maxillary palpi pale, 

 the last joint infuscated except at base, very obliquely excised apically, beneath, over 

 more than the apical half. Pronotum black, feebly tinged with testaceous laterally, 

 rather closely hirsute with rather short fulvous bristles, equal, nearly twice as broad 

 as long. Tegmina covering two-thirds of the abdomen, apically well rounded, uni- 

 form testaceous, but with the lateral field feebly infuscated ; wings aborted. Legs 

 blackish above, dull flavous beneath like the under surface of the body. Cerci very 

 regularly tapering to a fine point, about as long as the pronotum and tegmina com- 

 bined. Ovipositor fully as long as the hind femora, straight, slender, the apical blades 

 scarcely enlarged at the base, regularly tapering, scarcely more than twice as long 

 as their basal breadth, wholly unarmed, the tip acute. Length of body, 10 mm.; of 

 hind femora, 6.9 mm.; of ovipositor, 7 mm. 



I 9. Orizaba, Mexico (L. Bruner). 

 Nemobius ensifer, sp. nov. 



Head rather full, blackish castaneous, faintly striate with testaceous posteriorly, 

 lutescent down the face ; eyes not very large, rather full and prominent ; antennae 

 testaceous, somewhat infuscated beyond the basal portions ; maxillary palpi luteo-tes- 

 taceous, the last joint very obliquely excised apically beneath for a little less than 

 half its length. Pronotum fusco-castaneous, sparsely hirsute with black bristles of no 

 great length, equal, about half as broad again as long. Tegmina three-fourths as 

 long as the abdomen, the tip very strongly rounded, subacuminate, the veins blackish 

 or fuscous, the ground fusco-castaneous, more or less clouded ; wings very long. Legs 

 dirty luteous marked above with fuscous. Ovipositor considerably longer than the 

 hind femora, very slender, a little arcuate, the apical blades rather long, scarcely en- 

 larged basally, subequal in basal half, tapering beyond, wholly unarmed, the tip blunt. 

 Length of body, 10 mm.; of hind femora, 7.75 mm.; of ovipositor, 8.25 mm. 



I 9. Central America, Rev. Th. Heyde (L. Bruner). 



