JAMES A. G. REHN AND MORGAN HEBARD 231 



circularly arcuate. . Intcr-ccrcal plates much as in A. snpiis, l)ut the internal 

 tooth is robust and pre-apical, the apex of the plate blunted. Cerci about 

 one-fourth as long as the inter-cercal plates, short conical, jiroxirnal width 

 equal to three-fourths of their length, distal extremity very faintly attenuate. 

 Cephalic and median femora short, robust, appreciably comj^resscd, dorsal 

 surface with scattered adpressed spines, these usually proximad; ventro- 

 cephalic margins with a single spine, ventro-caudal margins unspined. Cep- 

 halic tibiae with foramina rimate; dorsal margins each with a single distal 

 spine, also one spine placed mesad on the dorsal surface faintly distad of the 

 foramina; ventral margins with five to six spines. Median tibiae with three 

 to four spines on the dorsal margins; ventral margins with six to seven sjiines. 

 Caudal femora somewhat longer than the combined length of the head and 

 pronotum together, moderately inflated proximad, the inflated section dorsad 

 with scattered adpressed spines; ventro-external margin with seven to ten 

 spines, ventro-internal margin with three to four spines distad; caudal tibiae 

 subcqual to femora in length, spines and spurs as in .4. scgnis, caudal tarsi 

 as in segnis. 



Allotype. — 9 ; same data as type. [Hel)ard Collection.] 

 Differing from the features of the male (type) description in the following: 

 Pronotum in profile with the dorsal outline weakly but regularly arcuate, 

 when seen from caudal aspect the disk is less strongly arcuate and more 

 deplanate transversely than in male. Disk of pronotum with greatest width 

 contained one and one-half times in greatest length of same, the width of 

 disk on prozona about one-half of greatest width of mesozonal disk: median 

 carina of pronotal disk more evident than in male, but less evident than 

 in male of A. scgnis, surface of disk with vermiculate etchings faintly more 

 evident than in male. Lateral lobes of pronotum faintly deei)er jiropor- 

 tionately than in male, the greatest depth contained two and one-third times 

 in the greatest dorsal length of same: ventral margin of lobes more broadly 

 arcuate cephalad than in male, caudad the same margin is hardly at all con- 

 cave; lateral carinae of disk appreciably overhanging the dorsal section of 

 the lateral lobes. Tegmina undeveloped. 



Abdomen with the production which we assume to !)e the eleventh tcrgite, 

 and which is the supra-anal plate, somewhat narrower and mor(> i)roduced 

 trigonal than in the male, the lateral margins straight converging to the 

 acute apex. Inter-cercal plate short, broad, hardly surpassing the aiiex of 

 the eleventh tergite, meeting ventratl on the median line, romided distad, 

 completely excavate on their internal faces. Ovipositor heavy, falciform, 

 elongate, in length but slightly shorter than the caudal femora, gently narrow- 

 ing in proximal half, thence subequal in depth to, near the acute aiiex; dorsal 

 margin of ovipositor with distinct, erect teeth in distal half, ventral margm 

 with shorter, more serrate teeth in distal fifth, series of teeth on disto-ventral 

 margin of dorsal valves less extensive than the regular ventral series. 8ul)- 

 genital plate broad proximad, narrowing distad, there produced into a pan- 

 of sub-parallel s'piniform fingers, as long as the proximal section of the plate, 

 when the ovipositor is in the usual resting position the fingers lie on each 



TRANS. AM. ENT. SOC, XLVI. 



