136 CATALOGUE OF 
16. ARMA MONOSPILA. 
Fulva, subtus subochracea ; antenne graciles ; thorax subcarinatus, spinis 
acutissimis optime determinatis apice nigris vix furcalis; scutellum 
fusco vie subulosum, apicem versus subtricarinatum ; venter macula 
subapicali punctisque lateralibus nigris, spina brevi ; pedes graciles, 
tibits anticis subtus unispinosis ; ale antice fusco subconsperse. 
Tawny, nearly oval, thickly and minutely punctured, dull ochraceous 
beneath. Head less than one-fourth of the breadth of the thorax; lobes 
of equal length. Antenne slender, Thorax with a slight keel, which is 
obsolete towards the hind border, and with a slight transverse ridge near 
the fore border; sides crenulated ; spines black towards the tip, very pro- 
minent and acute, slightly ascending and incliued forward, emitting on the 
hind side a short obtuse fork. Scutellum partly and very slightly shaded 
with brown, slightly attennated, and with three very indistinct 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 coxw. Legs slender, pu- 
bescent; fore tibie with a spive beneath. Fore wings minutely speckled 
with brown ; membrane civereous. 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. ARMA COLORATA. 
Rufa aut testacea ; caput postice cyaneo-viride ; antenne cyaneo-nigra, 
graciles ; thorax vittis duabus latissimis abbreviatis spinisque cyaneo- 
viridibus ; scutellum maculis duabus lateralibus cyaneo-viridibus ; 
pectus et venter maculis lateralibus cyaneo-viridibus, hic plaga sub- 
apicali cyaneo-viridi ; femora apice tibie tarsique cyaneo-viridia ; 
ale antice viridi-nigra, costa basi 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. Antenne 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 beneath; no ventral spine. Legs stout, 
minutely pubescent and setulose; femora towards the tip bluish green, ex- 
cepting a band on the under side; tibiz and tarsi bluish green; fore tibie 
with a spine beneath. Fore wings greenish black, almost smooth ; costa 
red towards the base; membrane blackish, cinerecus-bordered. Hind 
wings blackish cinereous. Var. 8.—Femora red, except the tips. Var. y. 
—Testaceous instead of red. Var. 6 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. 
