LEMA. 9 
8 (a). Lema quadraticollis. 
Black; above metallic blue; antenne rather short; thorax subquadrate, punctured at the middle and ante- 
riorly ; elytra slightly depressed below the base, deeply punctate-striate, the ninth stria not interrupted. 
Var. Above obscure eneous. 
Length 2 lines. 
Head entirely impunctate, not constricted behind, the space round the eyes rugose, the latter but slightly 
notched; antenne scarcely half the length of the body, black; thorax slightly broader than long, the 
anterior angles somewhat tuberculiform, the basilar sulcation deep, oblique at the sides, and impressed 
with some punctures, and from its middle a short longitudinal groove extends downwards to the base, the 
surface with two central rows of punctures, the sides also sparingly punctured anteriorly ; elytra narrowly 
parallel, with a very short depression near the suture below the base, the punctuation deep, but as usual 
gradually diminishing towards the apex, the interstices flat. 
_ Hab. Mexico, Jalapa, Cuernavaca (Hoge). 
Amongst the small metallic blue species with uninterrupted ninth row of elytral 
punctures the present insect may be known by the slightly indented eyes, the punc- 
tured thorax, and the almost obsolete postbasal depression of the elytra (the latter 
being very deeply depressed in L. angelica and most of the allied forms); the variety 
only differs in colour. JL. fryi, Clark, belongs to the second division of Lacordaire’s 
arrangement, and may be distinguished from the present species by the interrupted 
ninth row v of elytral punctures. 
8 (z). Lema fabricii. 
Bluish-black; above metallic blue; head and thorax distinctly punctured; elytra obsoletely depressed below 
the base, deeply punctate-striate, the ninth stria not interrupted. 
Length 2 lines. 
Hab. Mexico, Pinos Altos in Chihuahua (Buchan-Hepburn). 
It will be sufficient to point out the differences which separate L. fabricit from the 
other species of this section, although only a single specimen was obtained. The head 
is very finely punctured and slightly wrinkled at the vertex, and the space surrounding 
the eyes is raised and distinctly punctured ; the eyes are deeply notched; the antenne 
are stout, short, and thickened at the terminal joints; the thorax, although of similar 
shape and structure to that of Z. guadraticollis, is much more closely and distinctly 
punctured than in that species, and has the two central rows of punctures more promi- 
nent than the others; the elytra are still more deeply and very regularly punctured, but 
their basal depression is not more strongly developed than in L. quadraticollis. The 
principal characters by which L. fabricii may be known are the distinctly thickened 
terminal joints of the antenne and the punctured head and thorax; the latter has 
a deep transverse groove and in the centre a shorter longitudinal one extending to 
the base. 
3 (c). Lema propinqua. 
Black or metallic blue; thorax but slightly constricted at the sides, the disc with two rows of punctures. 
BIOL. CENTR.-AMER., Coleopt., Vol. VI. Pt. 1, Suppl., June 1888. Cc 
