(DIONYCHIS.—ALLOCHROMA. 319 
with a broad flattened lateral margin, the posterior angles thickened but scarcely produced, the surface 
extremely minutely punctured ; scutellum black ; elytra much widened at the middle, with a very broad 
flattened margin, each with six small black spots—two at the base, two before, and two below the middle, 
the latter placed obliquely, the surface very finely and closely punctured, the interstives finely wrinkled, 
the flattened margin more strongly punctate, the epipleure very broad and concave; underside and legs 
rather darker than above; claw-joint piceous. 
Hab. Mexico, Ventanas in Durango (Hége). 
Many specimens. The position and number of the spots and the colour of the 
antenne separate this species from any of its allies. 
71. Qdionychis pavonina. (Tab. XLIII. fig. 1.) 
Testaceous, the intermediate joints of the antenne fuscous; thorax impunctate; elytra extremely minutely 
punctured, fulvous, a transverse band near the middle, a lateral spot below it, and a spot at the apex, 
flavous, margined with piceous. 
Length 23 lines. 
Head scarcely perceptibly punctured, the frontal tubercles indistinct, the eyes large, the interocular space not 
broader than their diameter ; antenne slender, extending to the middle of the elytra, testaceous, the fifth 
joint partly and the following three joints entirely obscure fuscous ; thorax at least twice as broad as long, 
_ the sides broadly and flatly margined, strongly rounded, the anterior angles slightly dentiform, the surface 
impunctate, testaceous; scutellum fulvous; elytra microscopically punctured, narrowly margined, fulvous, 
with a transverse band immediately before the middle (composed of two coalescent spots), a round spot 
near the apex laterally, and the apex itself, pale flavous, these markings surrounded by a narrow piceous 
margin; underside and legs testaceous; claw-joint strongly swollen, 
Hab. Mexico, Atoyac in Vera Cruz (7. H. Smith). 
A single male specimen. 
ALLOCHROMA (p. 436). 
17 (a). Allochroma teapense. (Tab. XLIII. fig. 2, ¢.) 
Black, the face and the basal and terminal joints of the antenne fulvous; thorax finely and sparingly punc- 
tured; elytra fulvous, deeply punctate-striate, the interstices more or less costate, the base with a transverse 
black band. 
Var. The legs and underside fulvous. 
g. Antenne with the sixth joint strongly swollen and elongate. 
Length 2 lines, 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
Very closely allied to A. guatemalense, and with similarly formed antenne in the 
male, but of different coloration. ‘The legs (the posterior tibie excepted) are black: 
the elytra have a transverse black band extending to one-third of their length, and the 
interstices are costate, but more distinctly so near the sides. The variety has fulvous 
legs. Two specimens. 
24, Allochroma flohri. (Tab. XLIII. fig. 5, ¢.) 
Fulvous ; the antenne black, with the apical two or three joints flavous; thorax finely and sparingly punctured ; 
elytra fulvous, with a broad posteriorly narrowed black sutural stripe, punctate-striate, the interstices 
flat, ; 
