MORDELLISTENA. 347 
Hab. GuateMaLa, Calderas, on the slope of the Volcan de Fuego 7000 feet 
(Champion). 
One example. Closely resembling the var. y of IZ mutabilis, from Chiriqui, but 
differing from it in having two very short ridges only on the hind tibiz near the tip, 
and one only on the first hind tarsal joint; the apical joint of the maxillary palpi is 
more ovate, the thorax is transverse, the pygidium is a little shorter, &c. The black 
colour is more extended on the elytra, and the yellow markings are very sharply defined. 
The form of the palpi, the much longer antenne, and the more elongate shape distin- 
guish it from MW. bicinctella. M. crua resembles the North-American MM. trifasciata 
and its allies in colour, but the carine on the hind legs are formed as in MV. bicinctella. 
69. Mordellistena beata. (Tab. XV. fig. 22, 3.) 
Short, cuneiform, the head reddish-testaceous, the prothorax flavo-testaceous with a broad black median vitta 
extending from the base to the apex, the scutellum and elytra black, the latter with a broad oblique flavo- 
testaceous stripe extending from the shoulders towards the suture, but not reaching it, the pygidium 
testaceous ; the elytra with a sharply defined yellowish-cinereous-pubescent fascia beyond the middle and 
some similarly coloured pubescence at the base, the rest of the pubescence partaking of the ground-colour. 
Head short and broad; palpi (3) testaceous, the last joint of the maxillary pair twice as broad as long, 
hammer-shaped ; antennz as in VM. palpalis; pygidium very elongate, two and a half times the length 
of the hypopygium ; beneath black, the last ventral segments testaceous ; legs testaceous, the hind femora 
piceous ; the hind tibize with two very short ridges (and traces of a third) near the tip, the first joint of 
the hind tarsi with one only. 
Length to end of the elytra 2, to tip of the pygidium 24, millim. (¢.) 
Hab. Mexico, Cuernavaca (H. H. Smith). 
One male example. Very near I. palpalis, but with the elytral punctuation finer 
and denser; the sides of the thorax broadly, and an oblique stripe extending from 
the shoulders inwards, flavo-testaceous. As in I. palpalis, the postmedian fascia of 
the elytra is formed entirely by the colour and arrangement of the pubescence; in 
M. xanthopyga it is accompanied by a difference in the ground-colour. 
70. Mordellistena perexigua. 
Comparatively short, cuneiform, narrow, black, coarsely pubescent, the elytra with two broad cinereo-pubescent 
fasciee—one before, the other beyond the middle,—the rest of the elytral pubescence blackish-brown, that 
on the head and prothorax partly cinereous. Head very broad and short; palpi ( ¢) pitchy-testaceous, 
the last joint of the maxillary pair twice as broad as long, very stout, hammer-shaped; antenne ( ¢ ) 
pitchy-brown, very short, joints 3 and 4 slender, 4 slightly stouter than 3, 5-11 a little thickened, 5-7 as 
broad as long, 8—10 transverse, 11 longer than 10; prothorax transverse; elytra narrowing from the 
base; beneath black, the venter and the sides of the breast cinereo-pubescent ; pygidium elongate, more 
than twice the length of the hypopygium; legs piceous, the anterior femora and tibiz testaceous ; the 
hind tibiz with two very short ridges near the tip, the first joint of the hind tarsi with one only. 
Length to end of the elytra 2, to tip of the pygidium 23, millim. (<¢.) 
Hab. Guatemata, Calderas 7000 feet (Champion). 
One male example only. Smaller and narrower than M. palpalis (3); the head 
2YY 2 
