1880.] MR. M. JACOBY ON PHYTOPHAGOUS COLEOPTERA. 605 



to the middle, and is very regularly divided by the posterior black 

 part ; each elytron has also two black spots at the base — one at the 

 shoulder, the other near the scutellum. Underside (with the excep- 

 tion of that of the thorax) and the tibiae and tarsi black, closely 

 covered with yellow pubescence ; coxse and the femora fulvous. 



To be distinguished from D. divisa, Baly, and its allies, by the 

 colour of the underside and the black spots of the elytra. 



Mus. Godman and Salvin. 



80. DiABROTICA aUADRIMACULATA, Sp. DOV. 



Elongate. Black ; antennae (the three apical joints excepted), 

 thorax, femora, coxse, and two transverse bands on each elytron (one 

 below the middle, the other near the apex), as well as two small spots 

 below the base, flavous. 



Length 4| lines. 



Head very finely granulate and punctate, the frontal tubercles di- 

 stinct and divided by a deep groove ; lower part of face either flavoua 

 or black, like the rest of the head. Antennae as long as half the 

 body; the second joint half the length of the third, rest of the joints 

 slender and filiform, pubescent ; three apical ones flavous, the ex- 

 treme apex black. Thorax a little broader tlian long, with the 

 angles slightly produced ; surface rather convex, flavous, minutely 

 punctured and extremely finely granulate, without impressions. 

 Scutellum black. Elytra finely but more distinctly punctured than 

 the thorax, also very finely granulate, black ; each elytron with a 

 very small spot below the shoulder, another below the base near the 

 suture, a broad transverse band below the middle, not extending to 

 the sutural margin, and a narrow transverse band near the apex 

 light flavous. Underside, tibiaj, and tarsi black ; coxse, femora (the 

 latter streaked with black above), and the margins of the abdominal 

 segments flavous, all covered with rather long yellow hairs. 



From D. generosa, Baly, this species may be distinguished by the 

 want of the fovese at the thorax, the greater size, and the colour 

 and length of the antennae. 



Mus. Jacoby. 



81. DiABROTICA BASALTS, Sp. nOV. 



Oblong-ovate, widened behind. Rufous ; antennae, tibiae, and tarsi 

 black ; thorax transversely depressed ; elytra finely punctate, a 

 transverse band at the base rufous, another at the middle flavous, 

 the rest black. 



Length 3 lines. 



Head longer than broad, front impressed with a distinct fovea- 

 Antennae two thirds the length of the body, filiform, third joint 

 double as long as the second, black. Thorax broader than long, 

 narrowed at the base ; anterior angles produced into a short obtuse 

 tooth ; disk with a deep sinuate transverse groove not extending to 

 the sides ; surface impunctate, rufous ; scutellum of the same colour. 

 Elytra distinctly widened posteriorly, convex, closely but finely 

 punctured; a narrow, transverse, rufous band at the base; another 



