LEMA. 4] 
Head constricted towards the base, rather elongate, impunctate; the eyes large and prominent, and somewhat 
deeply notched, bounded behind by a narrow transverse rufous band, and with a short longitudinal groove 
in the middle between them; antenne half the length of the body, thickened towards the apical joints, 
black, the third joint slightly shorter than the fourth; thorax transverse, broader than long, the sides 
rather deeply constricted at the middle, with a transverse groove (more distinctly visible at the sides) in 
front of the anterior margin, and another (oblique at the sides) at some distance from thu base, the middle 
of the disc impressed with a row of fine punctures; elytra slightly narrowed at the middle, deeply longi- 
tudinally depressed within the shoulders and also below the base, the punctures very deep and rather 
remotely placed, and those of the eighth row larger than the others, the ninth row interrupted in the middle, 
the interstices costate at the apex; the underside and legs black. 
Hab. Mexico, Jalapa (Hége). 
L. bisulcata differs from the other species with blue elytra belonging to this division 
in the structure of the antenne and the rufous band on the vertex, in connection with 
the black head and thorax, the anterior sulcation of the latter, and the deep depression 
and punctures of the elytra. 
It cannot be mistaken for any other species with unicolorous upper surface. 
60 (p). Lema brevicornis. 
Black; above dark metallic blue; antenne very short and robust; thorax minutely punctured and finely 
strigose; elytra without basal depression, very regularly punctate-striate, the ninth row of punctures 
interrupted. 
Length 13 line. 
Head slightly constricted behind, the vertex impunctate; eyes moderately large, not deeply notched, bounded 
behind by a transverse groove, the latter with two ill-defined rufous elevations in the middle, the entire 
lower part of the face thickly covered with yellowish pubescence; antennez scarcely extending beyond 
the base of the elytra, distinctly thickened towards the apex, all the joints robust and short; thorax 
transverse, distinctly widened in front, the sides rather deeply constricted, the basal groove distinct, the 
entire surface impressed with very fine punctures and strige, and of a bluish-green tint; scutellum black, 
its apex deeply emarginate; elytra rather cylindrical, the basal depression almost obsolete, very regularly 
and rather deeply punctured, the punctuation (as usual) becoming rather finer posteriorly, the ninth row 
broadly interrupted (the anterior punctures composing it strongly, the posterior ones very finely, impressed) ; 
underside covered with fine yellowish pubescence. 
Hab. Mexico, Salazar (Hége). 
A single specimen obtained by Herr Hoge during his second journey. This insect is 
apparently a close ally of Z. fryi, Clark, but it cannot be identified with it, The very 
short and robust antenne (which are similarly formed in L. fryi), in connection with 
the finely punctured and rugose thorax and the much smaller general size, will separate 
L. brevicornis from any other species of this division. 
Lema mexicana (p. 14). 
To the locality Mexico, add :—Puebla, El Mirador (Sal/é). 
In the description of this species I have omitted to mention that the sides of the 
head below the eyes are black: this seems to be a good and constant character by 
which Z. mexicana may be separated from the allied forms with similar elytral pattern. 
In the four specimens before me the head is thus coloured. 
BIOL. CENTR.-AMER., Coleopt., Vol. VI. Pt. 1, Suppl., October 1888. g 
