78 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loa 



10. Pronotum with vittate piceous mark on each side. Panama, South America. 



sexplagiatum (Jacoby) 

 Pronotum with a spot on each side 11 



11. Large, 5-6 mm., an inconspicuous dark spot on each side of pronotum, some- 



times lacking. Guatemala, Nicaragua, Honduras, Costa Rica. 



parviplagiatum, new species 

 Smaller, 4-5 mm., a dark spot on anterior sides of pronotum usually con- 

 spicuous. Mexico parviplagiatum teapense, new subspecies 



Iceloceras sexplagiatum (Jacoby) 



Figure 2,a 



Diabrotica sexplagiata Jacoby, Proc. Zool. Soc. London (1877), p. 151, 1878; 



Biologia Centrali- Americana, Coleopt., vol. 6, p. 527, 1887. 

 Neobrotica sexplagiata (Jacoby), Gahan, Trans. Ent. Soc. London (1891), p. 524, 



1891. — Jacoby, Biologia Centrali-Americana, Coleopt., vol. 6, Suppl., 



p. 331, 1892. 



Between 3.5 and 5 mm. in length, elongate oblong oval, the elytra 

 densely and moderately coarsely punctate, shining, pale yellow with 

 brown to piceous antennae and legs with a dark streak on the upper 

 femora, dark tibiae and tarsi, and on the pronotum a dark vitta on 

 each side, and the elytra with sLx yellow spots and a pale margin, the 

 rest piceous black; middle tibiae of the male with a small notch near 

 apex. 



Head with interocular space a little more than half width of head; 

 deep orange on occiput, pale yellow on lower front, smoothly rounded 

 with fine punctures on occiput and a fine median line extending down 

 lower front between frontal tubercles and a thin carina down lower 

 front. Antennae entirely dark, 3d and 5th joints a little shorter than 

 4th. Prothorax about a third wider than long, sides slightly curved 

 and a semicircular depression on lower half of disk; shining although 

 finely alutaceous and finely punctate; pale yellow with a lateral 

 piceous vitta on each side extending from anterior margin nearly to 

 basal margin. Scutellum pale. Elytra dark piceous with three pale 

 yellow spots on each and a pale margin; surface densely and coarsely 

 punctate, shining. Epipleura extending to apical curve; in the female 

 the last abdominal segment dorsally conspicuously black-edged, and 

 the one before with a dark spot on each side. Body beneath entirely 

 pale, with pale pubescence; femora pale with a dark streak above, 

 posterior tibiae and tarsi dark, the notching on the middle tibiae of 

 the male very small. Length 3.5-5 mm.; width 1.5-2 mm. 



Type: Probably in the British Museum (Natural History). 



Distribution: Panama: Bella Vista, Nathan Banks, Aug. 8, 1924; 

 Paraiso, C. Z., E. A. Schwarz, A. H. Jennings; Porto Bello, August 

 Busck; Summit, N. L. H. Krauss; Miraflores, A. H. Jennings; Tobago 

 Island, H. F. Dietz; Pueblo Nuevo, Papaya plantation, H. Morrison; 



