12 PROCEEDING OF THE NATIONAL MUSEUM vol. 124 



punctures elsewhere; posterior surface with coarse, close pits laterally 

 becoming smaller and more separated toward midline; lateral surface 

 with close oblique rugae. 



Disk of first tergum weakly ridged anteriorly; last tergum sha- 

 greened at apex, somewhat shining. 



Inferior margin of hind femur obtusely angulate at middle; hind 

 tibia at apex on inner surface with four short, flattened setae. 



Male (hitherto unrecognized). — Length 13, forewing 9 mm. Color 

 as in female. 



Clypeal keel stronger than in other Hylomesa except tricolor liej- 

 tincki, not protruding in middle into a nasiform process as in female; 

 clypeal teeth lacking; distance from apex of frontal platform to occiput 

 0.89 times the head width across eyes; front with coarse, contiguous 

 punctures, median furrow strongly impressed on basal half; ocellocular 

 distance 2.1 times the postocellar distance and 0.65 times the ocell- 

 occipital distance ; occipital carina indistinct above in middle ; distance 

 between hypostomal and occipital carinae about half the hypostomal 

 length; median flagellar segments 1.2 times as long as wide. 



Pronotal disk with a strong anterior ridge, behind this on anterior 

 third with moderately coarse and subcontiguous punctures that form 

 irregular transverse rows; scutum with coarse pits on most of disk, 

 slightly separated except posteriorly in middle, where they are con- 

 tiguous; scutellum with coarse, very crowded larger pits; mesopleural 

 disk with coarse, subcontiguous pits on upper two-thirds; metapleuron 

 above with very fine, close ridges; propodeal dorsum with a narrow 

 median channel, laterad of which are coarse, contiguous pits; lateral 

 and posterior surfaces similarly pitted. 



First tergum slightly more strongly ridged anteriorly than in tri- 

 color lieftincki; sterna 3-6 with short, erect moderately dense vestiture. 



Genitalia with inner surface of squama and cuspis volsellaris not 

 densely setose; cuspis volsellaris very slender and curved; lamina 

 volsellaris on ventral margin with three long, stout setae; paramere 

 with a small blunt tubercle on inner ventral surface halfway to apex. 



Specimens examined. — 1 9, Ind, 63/81 (BMNH, the holotype). 

 1 9, Borneo (BMNH, determined as Myzine tricolor and thought 

 erroneously to be the holotype of tricolor Smith. 1 9, Borneo, 1909, 

 C. J. Brooks (BMNH). 1 9, Midden, O-Borneo, 28 August 1925, 

 H. C. Siebers (RNH). 1 cf , Bandjermas, Borneo (MCSN, Gribodo 

 Collection). 1 9, Marang, Burma (MCSN, Gribodo Collection). 1 9, 

 Sumbawa Island (MCSN, Gribodo Collection). 



Hylomesa longiceps (Turner), new combination 



Figure 1; Plate 1 (fig. 1) 



Plesia tricolor (Smith). — Magretti, 1892, in part, pp. 258-259. — Turner 1909, 

 in part, p. 480 [the specimen from Assam]. 



