MORGAN HEBARD 93 



margins cingulate and almost parallel; cephalic angles rectangulate and 

 sharply rounded, caudal angles obtuse-angulate, rounding broadly into the 

 broadlj' convex caudal margin. Tegmina smooth, dorsal surface subquad- 

 rate, sutural margins weakly overlapping, caudal margins of dorsal portions 

 straight, transverse. Wings absent. Abdomen smooth, broadening to fifth 

 dorsal segment, the two succeeding segments showing little difference in width ; 

 stink glands obsolete. Seventh dorsal abdominal segment with surface 

 roughened by irregular longitudinal ridges laterad and there obtuse-angulate 

 produced, with angle rather sharply rounded; eighth similar in this portion, 

 but with angle more sharply rounded; ninth similar, but ^vith angle subrect- 

 angulate and decidedly more sharply rounded: in these features much as 

 in americana but with ultimate dorsal abdominal segment showing a longi- 

 tudinally pinched and striate area instead of the single longitudinal and 

 declivent caudad carina found in americana; ultimate dorsal abdominal 

 segment elsewhere smooth, with a medio-longitudinal sulcus distinct only 

 meso-distad." Forceps heavy, briefly triquetrous proximad, flattened distad, 

 with internal margin supplied with a few blunt, irregular teeth; sinistral arm 

 almost straight to blunt and weakly incurved apex; dextral arm straight in 

 proximal half, thence curving evenly and strongly sinistrad to the blunt apex,' 

 thus crossing the sinistral arm distad. Penultimate ventral abdominal seg- 

 ment with distal margin forming an angle of over ninety degi-ees, the lateral 

 portions straight and convergent to the apex which is broadly truncate, weakly 

 and irregularly concave. Limbs proportionally shorter than in americana, 

 much shorter than in apolinari. Caudal metatarsus wdth ventral surface 

 thickly supplied with stiff hairs, with an internal and external row of rather 

 widely spaced spines and an internal marginal fringe of very closely set, shorter 

 hairs. 



Allotype. — 9 ; same data as type. [Hebard Collection.] 

 Agrees with type except in the following features. Distal portion of abdo- 

 men slightly narrower, forceps and armament of internal margin similar except 

 that the dextral arm shows no more curvature than the sinistral, both being 

 weakly curved in distal portion. Apex of penultimate ventral abdominal 

 segment not truncate, rather broadly rounded. 



Surface smooth and shining. Head, pronotum and abdomen unicolorous, 

 ranging from auburn (recessive) to black with a chestnut tinge (intensive). 

 Antennae of same color as head, the proximal joints often slightly paler. 

 Tegmina similarly colored, but in occasional examples of a slightly paler 

 shade. Dorso-distal abdominal segments and forceps the same except in 

 recessive examples where these portions arc of a darker shade. Limbs immacu- 

 late, ochraceous-tawnj\ 



^ This is obsolete in specimens of the series before us. 



' In americana this arm is somewliat offset at the base of the more strongly 

 curved distal portion, this giving it a distinctly different general appearance. 



TRANS. AM. ENT. SOC, XLV. 



