NEMOGNATHA. 37% 
granular points, the surface being opaque. The'elytra are yellower in colour than the 
head and thorax. 
.. 7. Nemognatha nigripes. — 
Moderately elongate, subparallel, shining, above and beneath pitchy-black, the head (the eyes excepted), 
prothorax, and the ‘apex of the ‘abdomen flavo-testaceous; thickly clothed with long, erect, blackish. 
hairs. Head short, triangular, thickly and not very finely punctured, the mandibles comparatively short,. 
the labrum transverse ;. the outer lobe of the maxille about half the length of the body ; antenne elongate, 
filiform, the second joint half the length of the third; prothorax slightly wider than the head, strongly 
transverse, the sides rounded in front and straight and a little converging behind, sparsely and moderately 
finely punctured; elytra finely and rather densely punctured; beneath sparsely punctured, the ventral. 
segments almost impunctate ; the spurs of the ” posterior tibiee slender, subequal, 
Var. The elytra flavous or flavo-luteous. 
Length 8-9 millim. 
Hab. Mexico (coll. F. Bates), Yolos (Sallé); Guatemata (Mus. Brit.). 
Four examples, one of the type and three of the variety, all in a bad state of 
preservation, and their sex not ascertained. In its long, erect, dark pubescence, 
strongly transverse thorax, and dark underside and legs this species approaches the 
N orth-American WN. scutellaris, Lee. ; it differs, however, from the two Californian 
examples of that insect before me by its more finely punctured upper surface, the punc- 
tures on the elytra much more closely placed, the smoother abdomen, &c. NV. nigripennis, 
Lec., from New Mexico and California, is an allied species, but apparently has a less. 
strongly transverse thorax. 
Both forms of WV. nigripes were obtained at Yolos. The specimen in Mr. F. Bates’s 
collection, from that of Dejean, is labelled with the name I have adopted. 7 
- 8. Nemognatha ephippiata. (Tab. XVII. fig. 13.) 
Moderately elongate,’ flattened above, a little widened posteriorly, opaque, finely and densely pubescent; the 
head testaceous, with two oblong spots between the eyes and an oblique mark on either side behind these: 
extending to the occiput, black, these markings in some examples coalescent, largely extended, and 
forming two broad sinuous stripes; the prothorax testaceous or ochraceous, with a broad, slightly 
oblique, black vitta on either side ‘of the disc extending from the apex nearly to the base; the scutellum 
varying in colour from ochraceous to. piceous; the elytra ochraceous, with a fascia below the base, more 
: or less excised on its lower edge, and extending upwards at the suture and laterally to the base (so as to 
enclose a large rounded spot on each elytron), and the apical third or more, black ; the antenna, palpi, 
tips of the mandibles, and legs black, the base of the femora sometimes testaceous; the under surface 
varying in colour from piceous to testaceous. Head transverse, densely, rugosely punctured, with a 
- . smooth, impressed, median line, the mandibles comparatively short, the labrum broader than long; 
_ the outer lobe of the maxille a little longer than the head, in some specimens abbreviated and not 
longer than in Zonitis; antenne long and filiform, the second joint scarcely shorter than the third ; 
prothorax of the same width as the head, broader than long, subcampanulate, the sides broadly rounded 
_ in front and slightly sinuate behind, the hind angles rather prominent, the surface densely, rugosely 
punctured, transversely depressed on either side anteriorly, and with a smooth, impressed, median line; 
elytra narrowed a little towards the base, separately rounded at the apex, very densely punetured, 
_’ with the interspaces somewhat granular, and usually with indications of three faint smooth lines on 
\. the disc; beneath finely and. rather closely punctured; the sixth ventral segment cleft and deeply 
“BIOL, CENTR.-AMER., Coleopt., Vol. IV. Pt. 2, February 1892. 30C 
