300 OETHOPTEKA. 



6. Ceuthophilus aztecilS, sp. n. {Ceutophilus aztecus, Tab. XIV. fig. 23.) 



2 • Fulveseens, omnino brunneo-irroratus. Pronotum postice truncatum, antice parum attenuatum ; lobis 

 lateralibus margine infero subarcuato, reflexo, angulo postico rotundato. Coxae anticae supra dente minuto 

 acuto instructae. Femora anteriora pronoto subduplo longiora, subtus margine antico spinulis minutissimis 

 3 : 4 armata ; femora intermedia subtus mutica ; postica intus spinulas minus 8 : 9 praebens, extus mutica. 

 Tibiae posticae rectae ; calcar intermedio-internum quam superum plus duplo longius. Lamina supra- 

 analis transverse rotundata. Ovipositor rectus, styliformis, rufo-castaneus, apice rufeseens, tantum apice 

 imo leviter curvatus; valvis superioribus apice spinula, valvis inferioribus apice dentibus minutis 4 

 remotis, instructis. 



(J. Long. corp. 12; pronot. 3; femor. ant. 6; femor. post. 11; ovipos. 7*5 millim. 



Hab. Mexico, Atoyac in Vera Cruz (Schumann). 



Allied to C. stygius, Brunn., but much smaller, with longer anterior femora, and the 

 hind femora with small spines. 



[UDEOPSYLLA, Scudd. 

 Udeopsylla, Scudder, Bost. Journ. Nat. Hist. vii. p. 442 (1862). 



1. "Udeopsylla robusta, Hald. 



Phalangopsis robustus, Hald. Proc. Amer. Assoc. Adv. Sci. ii. p. 346 (1850). 



Daihinia brevipes, Hald. loc. cit. p. 346; Girard, in Marcy's Rep. Explor. of the Red River of 



Louisiana, p. 257, t. 15. figg. 9-13 (1853). 

 Udeopsylla nigra, Scudd. Bost. Journ. Nat. Hist. vii. p. 443. 

 Udeopsylla robusta, Brunn. v. W. Monogr. der Stenopelm. und Gryllacr. p. 59. 1, t. 7. fig. 31. 



Eab. North Ameeica, Platte River, Nebraska, Missouri, Minnesota, New Mexico, Texas. 



Certain to be found in North Mexico (Chihuahua).] 



[GAMMAROTETTIX, Brunn. 

 Gammarotettix, Brunner v. Wattenwyl, Monogr. der Stenopelm. und Gryllacr. p. 60 (1888). 



1. Gammarotettix californicus, Brunn. 



Gammarotettix californicus, Brunn. v. W. Monogr. der Stenopelm. und Gryllacr. p. 61. 1, t. 7. 

 fig. 32. 



Hab. North America, California.] 



HEMIUDEOPSYLLA, gen. nov. 



Antennae basi approximatae, baud contiguae. Vertex perpendiculariter deflexus, antice inter scrobicula 

 antennarum fere tuberculum minutum rotundatum efficiens. Pronotum anterius paulum attenuatum, 

 antice et postice truncatum ; lobis lateralibus elongatis, margine infero subrecto, antico obliquo, angulo 

 postico fere recto. Femora anteriora et intermedia compressa, subtus plana, mutica. Tibia? anticae 

 supra teretes, vel subplanae, inermes. Femora intermedia apice spina geniculari, subtus spinulis paucis, 

 armata. Tibiae intermediae supra teretes, in margine postico spinis 2 armatae, subtus utrinque spinis 2 : 3. 

 Femora postica crassa, apice brevissime attenuata (in modo Oryllorum), subtus late sulcata, margine 

 externo, saltern in parte distali, serrulato. Tibiae posticae rectae, quam femora vix longiores, supra utrinque 



