QUEDIONUCHUS. 337 
angles rather prominent, not at all rounded; near the front margin on each side of the 
middle with a longitudinal series of three punctures, a large puncture near the lateral 
margin in front of the middle, and a few irregularly placed punctures near the front 
margin on each side. Elytra a little longer than the thorax, the surface dull, owing 
to a most minute dense sculpture, only to be detected by a strong magnifying-power, 
and also obscurely wrinkled, but without true punctuation, except that there are a few 
obsolete serial punctures, three or so near the suture, another longitudinal series of 
four or five within the shoulder, and one or two punctures between these two series. 
Hind body with a scanty but distinct fine punctuation. The front tarsi of the male 
are a little broader than those of the female, and in the former sex there is a small 
notch at the tip of the last ventral plate. 
The species apparently varies a good deal; the hind body is frequently more or less 
flavo-piceous ; it is possible the form with red wing-cases may prove to be a distinct 
species, as Hoge found a large series of the type form at Las Vigas without any of the 
more brightly coloured form. Certain smaller individuals from Las Vigas and Oaxaca 
with shorter elytra, and rather paler legs, antenne, and palpi, depart much from the 
typical forms. Only a single decayed individual has been received from Guatemala. 
Solsky’s description was apparently drawn up from a single female, and is so 
erroneous in respect of the position of the lateral marginal puncture of the thorax, of 
the punctuation of the hind body, and in making no mention of the serial punctures 
on the wing-cases, that I have thought well to replace it by a fresh one. M. Fauvel 
assures me that he has ample evidence from correspondence with the late Mr. Solsky 
that this is the species he really intended to describe. 
2. Quedionuchus spinipes. 
Piceus ; antennis, palpis pedibusque rufis, tibiis piceis; elytris levigatis, subopacis, brevioribus quam pro- 
thorax ; abdomine parce punctato. 
Long. 9-10 millim. 
Hab. Guatemata, Quiche Mountains 7000 to 9000 feet, Totonicapam 8500 10,500 
feet (Champion). 
Var.? An femina? Tibiis posterioribus breviter spinosis. 
Hab. Muxico, Las Vigas (Hége). 
This species is closely allied to Q. impunctus, but the individuals are smaller, the 
elytra are much shorter, the colour is paler, the antenne are more slender, and the 
posterior femora (in the male if not in the other sex) are stouter and armed with 
longer and stronger spines. The metasternum is in this species so much reduced in 
length that the tips of the middle coxe very nearly touch the hind ones. The head 
is elongate behind the eyes, which are consequently remote from the neck as in Q. im- 
punctus. 
BIOL. CENTR.-AMER., Coleopt., Vol. I. Pt. 2, Pebruary 1884. 2XX 
