480 SUPPLEMENT. 
the prothorax, and nearly three times as long as it, subparallel in their basal half, with rows of fine, 
subapproximate punctures, which become still finer towards the apex, the interstices flat, each with an 
irregular row of punctures which are very little finer than those of the striw; beneath very coarsely, 
closely punctate, the ventral surface more sparsely and finely so; tarsi clothed with spiny hairs beneath, 
the first joint of the hind pair as long as 3 and 4 together. 
Length 5 millim. 
Hab. Mexico, La Noria in Sinaloa (Hége). 
This small species has much the facies of a Blapstinus. One specimen. 
3. Mesabates inezequalis. 
Obovate, convex, opaque, black or brownish-black. Head short, broad, a little dilated anteriorly, rather 
sparsely, finely punctate; the epistoma very broad, short, declivous and produced in front, broadly 
truncate at the apex, limited posteriorly by a transverse depression which extends laterally to the sharp 
supraorbital ridge; the eyes not prominent, divided to about the middle by the sides of the front, which 
are rounded anteriorly and somewhat swollen; antenne slender, joints 9 and 10 as long as broad ; 
prothorax convex, transverse, widest a little behind the middle, the sides almost parallel behind, gradually, 
obliquely converging in front, the anterior angles somewhat produced and with a few fine vibrisse, the 
hind angles nearly rectangular, the base subtruncate, the surface coarsely, confluently punctured at the 
sides, sparsely and finely so on the disc; elytra slightly wider than the prothorax, oval, with rows of very 
fine, shallow, not very closely placed punctures, which become obsolete towards the apex, the interstices 
flat, minutely, sparsely punctate from the base to the middle, almost smooth beyond; beneath very 
coarsely punctured, the ventral surface finely and sparsely so; tarsi clothed with spiny hairs beneath, the 
first joint of the hind pair as long as 3 and 4 together. 
Length 5-63 millim. 
Hab. Mexico, Chihuahua city, Refugio and Villa Lerdo in Durango, Aguas Calientes 
city (Hoge). 
Numerous examples. In its obovate shape &c. this species resembles Trimytis 
obovata, but it has a very differently formed head. The punctuation of the elytra is 
sometimes very faint; the thorax has the middle of the disc finely and sparsely, and 
the sides coarsely and confluently, punctate, the transition from one to the other being 
very abrupt. The antenne are much more slender than in MW. latifrons and M. spissi- 
cornis; the intercoxal process of the abdomen is broader than in I. latifrons. 
EMMENASTUS (p. 8). 
The North-American species of Hmmenastus and Hurymetopon have been recently 
monographed at great length by Capt. Casey (Ann. N. York Acad. v. pp. 330-365). 
Of Emmenastus we have received a large amount of additional material, but of 
Hurymetopon nothing fresh has come to hand. 
Emmenastus belti (p. 11). 
Emmenastus rotundicolls, huj. op. p. 11. 
Emmenastus intermedius, huj. op. p. 12. 
To the localities given, add :—Mexico, Temax in North Yucatan (Gaumer). 
