South American species of Diahrotica. 75 



flavous, the rest pale piceoiis. Thorax one-third broader thau 

 long ; sides obsoletely sinuate and slightly diverging from the base 

 to the middle, thence slightly rounded and converging towards the 

 apex ; disk convex, smooth, impunctate. Elytra oblong-ovate, 

 slightly dilated posteriorly, their apices regularly rounded ; above 

 convex, iinely but rather closely punctured, the subhumeral costa 

 obsolete ; each elytron with a short black sutural line, which 

 covers the basal third of the suture. 



Spec. 137. Diahrotica cvanesccns. 



Proc. Zool. Soc, 1889, p. 94. 



Anguste ovata, postice paullo ampliata, convexa, pallide viridi- 

 flava, abdomine Havo, pectore, tibiis, tarsis, scutello capiteque nigris, 

 antennarum basi picea ; thorace longitudine paullo latiori, disco 

 bifoveolato ; elytris subnitidis, crebre punctatis, sordide flavis, 

 fascia lata proj)e medium prasina, suturte basi nigra. 



Long. 3 lin. 



Hah. Ecuador {Buckley). Unique in my collection. 



Antennse filiform, black, the three lower joints obscure piceous ; 

 second and third short, nearly equal, the fourth longer than tlie pre- 

 ceding two united. Thorax slightly broader than long ; sides sinuate, 

 nearly parallel from the base to beyond the middle, thence obUquely 

 converging towards the apex ; disk nitidous, impressed on either 

 side with a large but shallow fovea. Elytra dilated posteriorly, 

 convex, coarsely and rather closely punctured, each elytron plicate 

 below the humeral callus ; within the latter is a distinct but shallow 

 longitudinal sulcation, a second less defined being placed on the 

 medial line between the outer and inner disks ; across the middle 

 of the elytra, which are of a pale dirty yellow colour, is a broad 

 ill-defined grassy-green fascia ; the suture at its base is narrowly 

 edged with black. 



Spec. 138. Diahrotica Jlavo-fulva. 



Ovata, postice ampliata, convexa, flavo-fulva, nitida, jiectore, 

 scutello labroque nigris, tibiis antennarumque articulis ultimis piceo- 

 tiuctis ; thorace convexo, IeevI ; elytris fere impuuctatis, hevibus, 

 prope medium transversim impressis. 



Long. 3 lin. 



Hah. Cayenne. Coll. Fry and Baly. 



Head not longer than broad ; clypeal ridge prominent ; antenna 

 filiform, three-fourths the length of the body, the second joint 

 short, the third slightly longer thau the second, the fourth longer 



