342 PROCEEDINGS OF THE NATIONAL MUSEUM vol. m 



are black. This is a very unusual character in this genus. Three 

 pairs of incurved lower orbital bristles, all the same length and hardly 

 longer than the considerably thicker posterior pair of recurved upper 

 orbital bristles (ors). Anterior pair of ors as long as divergent ocellar 

 and outer vertical bristles; the convergent inner vertical bristles are 

 longest and strongest of all. Two to three pairs of well-developed 

 genal bristles present among the black hairs, the latter are only slightly 

 shorter but much weaker than the bristles. 



Thorax 2.2 (2.0) mm. long and 1.5 (1.4) mm. wide, ochraceous 

 yellow; mesonotum strikingly vittate and, except the narrow shining 

 ochraceous yellow hind margin, densely covered with reddish brown 

 dusting except for two broad, whitish dusted vittae separated in 

 median line by a reddish brown linear vitta; each of these densely 

 white dusted vittae (in which the dorsocentral and prescutellar bristles 

 are inserted) is broader than the reddish brown dusted lateral vittae, 

 which terminate in the usual black spots situated between the upper 

 postalar and prescutellar bristles; the white dusted vittae are covered 

 with pale yellow and the reddish brown ones with black hairs. On 

 hind part of mesonotum are two pairs of oval black spots, placed in 

 transverse row — the inner pair situated in front of scutellum, and 

 present in most all known species of Tomoplagia (it is homologous to 

 the outer pair of black spots in the atelesta group) ; each black spot of 

 the supernumerary outer pair of black spots situated between upper 

 and lower pair of postalar bristles (pa), immediately above the lower 

 pa; black spot beneath the wing base. Pleura ochraceous yellow, 

 shining, darker below, with four black spots: a horizontal broad 

 vittalike one in the middle third of sternopleura, a narrow vittalike 

 one situated on upper margin of sternopleura before the sterno- 

 pleural bristle, a large oval one above hind coxa, and a wide stripelike 

 one on lower half of ventral and on inferior margin of dorsal pleurotergite. 



Scutellum shining ochraceous yellow, with some black hairs on hind 

 half. Postscutellum shining testaceous yellow, with pair of triangular 

 lateral black spots. Mediotergite in one specimen is entirely dark 

 testaceous yellow, in the other one with two lateral black vittae 

 united with the pair of lateral black spots of postscutellum. 



Thoracic bristles brownish yellow except lower postalar pair (pa), 

 which in both specimens examined are brownish black, and upper pa 

 and the four scutellar bristles, which in one specimen are also brown- 

 ish black, in the other are brownish yellow; two pairs of mesopleural 

 bristles present, lower one dark brown to brownish black, much weaker 

 than and about half as long as the upper one; dorsocentral bristle pair 

 inserted about middle of distance between transverse suture and the 

 (imaginary) transverse line between supra-alar bristles; apical pair of 

 scutellar bristles convergent and may be crossed apically. 



Coxae and legs testaceous yellow, but distitarsi of mid and hind 

 legs slightly darkened, brownish; bristles and hairs of coxae and legs 



