AMBATES. 161 
11. Ambates obliquus, sp. n. (Tab. IX. fig. 23, ¢.) 
Ambates obliquus and sallei, Jekel, in litt. 
Elongate, rather shining, black ; clothed above and beneath with minute brown hair-like scales, the elytra 
each with a dense oblique fascia at about one-third from the apex (extending inward to the second or 
third stria), and sometimes some small scattered spots across the middle or around the seriate punctures, 
whitish or pale ochreous, the prothorax usually with indications of a faint oblique ochreous line on each 
side of the disc. Head with a small fovea between the eyes; rostrum arcuate, stout, thickly punctate 
and unicarinate, smoother and longer in the 9; joint 2 of the funiculus much longer than 1. Prothorax 
transverse, subconical, closely, finely punctate. Elytra long, finely punctate-striate, the punctures 
conspicuous, the interstices closely punctulate. Ventral segments 1 and 2 broadly excavate down the 
middle in the ¢. 
Length 7-101, breadth 23-35%, millim. (¢ 92.) 
Hab. Mexico, Santacomapan and Toxpam in Vera Cruz (Sad/é). 
Six specimens. This is a form of A. fasciolatus, and occurs at the same locality, 
with the elytra obliquely and separately fasciate towards the apex, and the vestiture 
of the under surface uniformly coloured, It is distributed in various collections under 
Jekel’s MS. names. 
12. Ambates sexpunctatus, sp.n. (Tab. IX. figg. 24, 24a, ¢.) 
Elongate, rather shining, black; clothed above and beneath with minute brown hair-like scales, the prothorax 
with a faint oblique ochreous line on each side of the disc anteriorly, the elytra each with three small 
dense pale ochreous spots—one on the lower margin below the shoulder, one on the fifth interstice 
(extending inwards to the second stria in one specimen), and one on the third interstice towards the 
apex; the sides of the body beneath with intermixed coarser ochreous scales. Head foveate between 
the eyes; rostrum very stout, arcuate, rugosely punctate and tricarinate. Prothorax subconical, broader 
than long, finely, rugulosely punctate. LElytra long, finely punctate-striate, the punctures conspicuous, 
the interstices flat and closely punctulate. Ventral segments 1 and 2 broadly depressed down the 
middle in the ¢. Tarsal claws free. 
Length 9, breadth 33 millim. (¢.) 
Hab. Mexico, Misantla (/oge). 
Two males. A? sexpunctatus is yet another form of A. fasciolatus that seems to 
require a separate name, all three inhabiting the Atlantic slope of Mexico, with three 
small pale ochreous spots on each elytron (constant in position, but varying in size) 
and a very stout, rugose, tricarinate rostrum. 
13. Ambates triangularis, sp.n. (Tab. 1X. fig. 25, ¢ .) 
Elongate, dull, piceous, the apex of the rostrum and the legs more or less ferruginous ; the prothorax with a 
vitta on each side, extending on to the head and rostrum, and a faint median line, and the elytra with 
a strongly sinuate, broader, submarginal stripe, which is interrupted or much narrowed at about the 
basal fourth, densely clothed with ochreous scales; the elytra with a very large, common, triangular 
patch (sometimes narrowly divided along the suture) between the vitte posteriorly, and an oblique 
streak exterior to them near the apex, black; the rest of the vestiture of the upper surface sparser, 
brownish or ochreous, that of the under surface (a broad space along the middle of the ventral segments 
3-5 excepted) dense, whitish and ochreous intermixed. Rostrum strongly arcuate, stout, rugosely 
punctate and unicarinate, its apical third smoother. Joints 1 and 2 of the funiculus equal in length. 
BIOL. CENTR.-AMER., Coleopt., Vol. LV. Pt. 5, Lebruary 1907. YY 
