BRUCHUS. 451 
fascia at the extreme base, including the scutellum, white; a short sutural mark 
extending backwards from this of the same colour, as also an irregular transverse fascia 
in front of the middle; apical half pallid ashen like the thorax; striation fine but 
distinct. Pygidium and ventral plates densely clothed with pallid ashen pile ; hind coxe 
black, the breast white. Hind femora with a long, slender tooth, and behind it and 
quite separated from it a much shorter tooth emarginate or bifid at the summit. Hind 
tibie short, strongly curvate at base, stout, with rather short apical spur; basal joint 
of hind tarsus stout. 
This is another of the species forming a transition from the “ Pachymeri” to the 
Stirps I of “ Bruchi genuini.” The penultimate ventral plates though not so abbreviate 
as in most of the Pachymeri are still of the same type. A single exponent was found 
in each locality. 
23. Bruchus ruficoxis. 
Perparvus, subtus niger (abdomine femine ex parte rufo), supra rufus (sed colore instabilis) fusco nigroque 
variegatus, pedibus cum coxis antennarumque basi pallide rufis; prothorace conico; antennis parum 
elongatis, intus subserratis; femoribus posterioribus dente minuto denticulisque minutissimis duobus. 
instructis. 
Long. 13 millim. 
Hab. Guaremata, San Gerdénimo (Champion); Nicaraava (Sallé). 
Head very short, eyes very widely separated. Antenne reaching nearly as far back as. 
the base of the thorax ; third and fourth joints rather small, subequal, fifth and following 
joints infuscate or nearly black, penultimate joints not quite so long as broad. Thorax 
with a distinct coarse punctuation, and clothed with a very pallid ochreous pubescence. 
Elytra finely striate, of a pallid red colour, more or less marked with black or fuscous. 
along the suture and outer margin, their pubescence similar to that of the thorax. 
Hind femora bearing only a quite small tooth and two minute acute denticles quite 
near to it; tibiee with a delicate rather long spur. The male has the hind body entirely 
black and the pygidium more inflexed at the apex, so that the apical ventral plate is 
very short in the middle; in the female the four terminal ventral rings and the pygidium 
are red, and the last ventral ring, though quite short, is not any shorter in the middle. 
In each sex the three last ventral rings are quite short, but are a little shorter in the 
male than they are in the female. : 
. The small size of the femoral teeth is one of the more important of the diagnostic 
characters of this species, which, perhaps, would be better placed among the small 
insects forming my Group § 6. | 
So far as I can judge from the small series of eight examples, the coloration of the 
under surface is pretty constant in each sex ; the upper surface, however, varies a good 
deal in colour, and the thorax, which is usually rufescent, may be black. From Nicaragua 
only one example has been obtained. 
| 3m 2 
