476 BRUCHIDES. 
being a male and the others females, I presume this is a sexual distinction. The 
species has a long slender mucro at the apex of the hind tibia. 
81. Bruchus longiventris. 
Suboblongus, parum convexus; supra ferrugineus, fusco albidoque variegatus, subtus niger, albido-vestitus ; 
antennis pedibusque testaceis; prothorace subtransverso, disperse sat fortiter punctato; femoribus poste- 
rioribus dente parum elongato denticulisque duobus instructis. 
Long. 33 millim. 
Hab. Norta America, Arizona (Morrison).—Mexico, Northern Sonora (Morrison). 
Of rather narrow, slightly convex form, with the pygidium elongate and more hori- 
zontal than usual. Antenne entirely pale yellow, not stout, subserrate, the penultimate 
joint about as long as broad. Head short, the eyes widely separated. Thorax with the 
sides rounded in front. Scutellum not elongate. Elytra with dark marks at the sides 
and apex, and also dark along the suture, bearing a fuscous pubescence with indistinct 
paler spots, the punctuation of the strie more than usually distinct. Pygidium clothed 
with fuscous, white at the sides, the white extending inwards at the middle. All the legs 
yellow. Under surface clothed with white pubescence; terminal ventral ring equal in 
length to the basal ring. Hind legs slender; femora not dilated, with a rather small 
acute tooth and two small acute denticles; tibia slender, straight, not at all mucronate 
at the front angle. Male with a large impression on the terminal ventral. ring, scarcely 
visible in the female; femora not channelled. 
This species was distributed by the late Mr. Morrison with the name B. prosopis; 
although abundantly distinct from that species I think it may possibly prove to be 
identical with B. protractus, Horn, described on a single example from the peninsula 
of Lower California, | 
82. Bruchus insolitus. 
Sordide ferrugineus, ochraceo vestitus, pectore nigricante; antennis pedibusque testaceis, pedibus posterioribus 
rufis ; prothorace conico, antrorsum angustato, disperse sat fortiter punctato ; femoribus posterioribus dente 
elongato denticulisque duobus prominulis instructis. 
Long. 33 millim. 
Hab. GUATEMALA, near the city (Champion). 
Antenne short and stout, yellow, the penultimate joints transverse. Thorax nearly as 
long as it is broad at the base, much narrowed in front, the sides not rounded, the hind 
angles very acute. Scutellum quadrate. Elytra very finely striate-punctate, covered with 
a fine pubescence which is scarcely variegate. Pygidium moderately large, densely 
clothed with pubescence. Hind femora moderately dilated, armed with a long tooth, 
and two acute and prominent denticles, the tibia thick, the knee bent, the apex oblique 
so that the anterior angle forms a stout, short, prominent angle. First ventral ring 
about as long as the four other rings together. | 
A peculiar species, possessing many of the characters of the B. humeralis allies, such as 
