81 
and Species 0 /Gall erne in®. 
third slightly longer than the second, the fourth equal in length 
to the two preceding united. Thorax scarcely broader than 
long; sides parallel, very slightly sinuate, converging at the 
apex, the anterior angles obliquely truncate ; surface smooth 
and shining, minutely punctured, the puncturing only visible 
under a lens; disk impressed on either side with a very shallow, 
ill-defined fovea. Scutellum trigonate, shining, impunctate. 
Elytra narrowly oblong, distinctly and rather closely punc¬ 
tured, the interspaces granulose-punctate, faintly wrinkled on 
the inner disk ; on the anterior portion of the outer disk are 
four or five faint longitudinal sulcations, the one below the 
humeral callus being more distinct and more deeply impressed 
than the others. 
Diabrotica sexmaculata. 
D. elongato-ovata, postice vix ampliata, subtus piceo-fulva, nitida, 
femoribus (basi excepta) protboraceque prasinis, abdomine flavo ; 
supra prasina, antennis (articulo basali excepto) piceis ; thorace 
transverso-quadrato, lcevi, utrinque sat profunde foveolato; ely- 
tris crebre punctatis, infra callum humerale longitudinaliter sul- 
cato, utrinque maculis magnis tribus, una oblonga, a basi fere ad 
medium extensa, secunda vix pone medium, transversa, leviter 
curvata, tertiaque ante apicem subtrigonata fulvis. 
Long. 31 lin. 
Hab. Guatemala. 
Head not longer than broad ; front impressed above the 
encarpae with a deep fovea ; carina raised, linear. Antennae 
filiform, nearly equal to the body in length; second and third 
joints very short, equal; the fourth longer than the two pre¬ 
ceding united: labrum fulvous. Thorax scarcely broader 
than long ; sides parallel, slightly sinuate, slightly converging 
at the apex; disk smooth, impunctate, impressed on either 
side the middle with a deep fovea. Elytra closely but finely 
punctured, impressed below the humeral callus with a short 
longitudinal groove. 
Diabrotica dilaticornis. 
D. ovata, moclice convexa, nitida, subtus nigra, pube grisea sat 
dense vestita, prothorace glabro, fulvo, abdomine cyaneo; supra 
fulva, antennis nigris; thorace kevi transverso, disco subarcuatim 
excavato; scutello nigro; elytris crebre punctatis, leviter rugosis, 
viridi-cyaneis, limbo exteriore (apice excepto) fulvo. 
Mas antennarum articulis ultimis quatuor compressis et dilatatis. 
Fcem. antennis filiformibus. 
Long. 2^ lin. 
Hab. Amazons. Collected by Mr. Bates. 
Ann. & Mag. N. Hist. Ser. 5. Vol. iii. 
6 
