136 CATALOGUE OF 



16. AUMA MONOSPILA, 



Fulva, sublus suhochracca ; antenme (jraciles ; thorax stilcarinaf.us, spinis 

 acutissimis oplime dfU'rniinalis apice nigris vix furcaiis ; scutellum 

 fusco vix subiilosum, apicem versus sublricarinatnm ; venter macula 

 suhapicali punclisque laleralibus nigris, spina brevi ; pedes graciles, 

 tibiis anticis subtus unispinosis ; alo: anticce fusco subconspersce. 



Tawny, nearly oval, thickly and minutely punctured, dull ocliraceous 

 beneath. Head less than one-fourth of the breadth of the thorax ; lobes 

 of equal length. Antennas slender. Thorax with a slight keel, which is 

 obsolete towards the hind Itorder, and with a sliglit transverse ridge near 

 the fore border; sides crenulated ; spines black towards the tip, very pro- 

 minent and acute, sliglilly asotndiny: and inclined forward, emitting on the 

 hind side a short olUuse fork. Scutellum partly and very siighily shaded 

 with brown, slightly attenuated, and willi ihree very indisiinol keels 

 towards the tip. Abdomen beneath with a black spot in the disk near the 

 tip and with a black point on each side on the fore border of each segment; 

 ventral spine not extending beyond the hind coxte. Legs slender, pu- 

 bescent; fore tibiae with a spine beneath. Fore wings minutely speckled 

 with brown ; membrane cinereous. Length of the body 5^ lines. 



The notched thoracic spines distinguish this species from A. invaria 

 and from A. cornuta. 



a, Mexico. Presented by W. W. Saunders Esq. 



17. Arm A colobata. 



Rufa aut leslacea ; caput postice cyaneo-viride ; antenncB cj/aneo-nigrtc, 

 graciles; thorax villis duabus latissimis abbrcviulis spinixque ci/inco- 

 viridibus ; scutellum inuculis dwibus lateralibus cyaneo-viridibus; 

 pectus et venter maculis laleralibus cy meo-viridibus, hie pluga sub^ 

 apicali cyaneo-viridi ; femora apice tibice tarsiijue cyaneo-viriUia ; 

 alcB anlicoE viridi-nigrce, casta b isi rufa. 



Red, elongate-oval, minutely punctured. Head less than one-fourth 

 of the breadth of the thorax; hind part dark bluish green ; lobes of equal 

 length. Antennas bluish black, slender, hardly pubescent ; second joint 

 not longer than the third ; fourth and fifth rather shorter than the third. 

 Thorax with two very broad bluish green stripes, which do not extend to 

 the fore border; fore angles acute ; sides slightly crenulated ; spines bluish 

 green, prominent, obtuse. Scutellum with an elongated bluish green spot 

 on each side at the base of the attenuated part. Pectus with three bluish 

 green dots and with two hinder transverse bluish green streaks on each 

 side. Abdomen bluish green towards the tip, excepting the border; a 

 row of bluish green spots along each side and two bluish green spots side 

 by side in the disk near the tip beneatli ; no ventral spine. Legs stout, 

 minutely pubescent and selulose; femora towards the tip bluish green, ex- 

 cepting a band on the under side; tibiae and tarsi bluish green; fore tibia) 

 with a spine beneath. Fore wings greenish black, almost smooth ; costa 

 red towards the base; membi'ane blackish, ciucreons-bordered. Hind 

 wings blackish cinereous. Var. /3. — Femora red, except the tips. Var. y. 

 — Testaceous instead of red. Var. S like Var. y. Stripes of the thorax 

 connected near the hind border. Length of the body 6^ — 7 lines. 



This species differs much from the typical form of the genus. 



a, b. Oajaca. From M. Salle's collection. 



c. Mexico. Presented by W. W. Saunders, Esq. 



d. Vera Cruz. Presented by W. W. Saunders, Esq. 



