MORGAN' HEBARD 165 



which overhangs the proxiiiiul half of the third segment, this lobe with margins 

 angulato-arcuate, its dorsal surface irregularly rugulose with projections 

 similar to those of third segment mesad at its base; third with median carinae 

 enlarged caudad into very small, vertical, rounded plates directed caudad; 

 fourth, fifth, seventh and eighth segments with median carinae terminating 

 caudad in small projecting nodes directed caudad; sixth with a pair of rounded 

 plates meso-caudad, fully twice as large as those of the third segment, on each 

 side of which is a small plate of half the size; ninth (distal) segment with a weak 

 medio-longitudinal carina, lateral margins convex-convergent to the minutely 

 angulate-emarginate apex. Ventral surface strongly nodulose. Operculum 

 very elongate, extending to apex of abdomen,"- carinate medio-longitudinally, 

 deeply rotundato-emarginate at the narrow apex, the lateral projections nar- 

 row and bluntly rounded distad. Cephalic femora weakly laminate, carinae 

 very decided, dorsal surface with (six and seven) weak strumosities, the.se 

 making the dorso-lateral carinae weakly crenate. Cephalic tibiae with dorso- 

 lateral carinae weakly crenate, the more proximal of these sub-lobate. Median 

 femora with dorso-lateral carinae each supi)lied with three opposed lobes, 

 these increasing in size distad, those of the dorso-caudal margin decidedly the 

 largest. Median and caudal tibiae with dorso-lateral carinae each supplied 

 with three small opposed lobules. Caudal femora with lobes as in median 

 femora, but with a faintly indicated additional pair of sub-lobate expansion 

 distad. Well-developed arolia present. 



Length of body, 48; composite spines on liead, 1.3; pronotum, 3.2; com- 

 posite spines on pronotum, 1.3; mesonotum, 10.8; metanotum, including median 

 segment, 6.8; lobe of second dorsal abdominal segment, 2.1; cephalic femur, 

 11.5; median femur, 8.8; caudal femur, 11.2; operculum. S.8 mm. Width of 

 pronotum, caudad, 3.8; mesonotum, caudad, 4.7; lobe of second dorsal ab- 

 dominal segment, 5; cephalic femur at widest point, 1.7 mm. 



General coloration mummy Ijrown. Labrum ochraceous-tawn\'. Meso- 

 sternum and metasternum mars brown, maculate with mummy brown. 



In addition to the type a single immature female, 41.5 mm. in 

 length, is at hand, bearing the same data but taken in December. 



liibethra columbina (Westwood) 



1S59. Ceroys columbina Westwood, Cat. Orth. Ins. Brit. Mas., Phasmidae, p. 

 t)2, pi. xxiv, figs. 1 and la. [ 9 , Colombia.] 



San Antonio, Cauca, 6600 feet, XI, 1908, 1 9 , [U. S. N. M.]. 



This insect, compared with L. spinicollis here described, agrees 



in size and similar, though much less decided, specialization of 



'- The operculum is elongate, slender and tapering from the median portion, 

 which is distinctly strumose, to the narrow apex, which is emarginate, in all the 

 females of Lihethra at hand. It completely hides both the ovipositor valves 

 and the very brief cerci. This is in our ojjinion of high generic value, minor 

 differences in type of apex alone appearing to have specific significance. 



TRANS. AM. ENT. SOC, XLV. 



