214 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 109 



spot, surrounded by scattered granulations; the disc of tergum vii 

 elevated, and transversally depressed in the middle, almost saddle- 

 shaped; the exterior borders of tlie abdomen with two (dorsolateral 

 and ventrolateral) rows of big, blunt, semierect tubercles. Venter 

 rather smooth, with fine and dense punctation, but without granida- 

 tion. Sternum vii longitudinally inflated (fig. 5). Spiracles ii-v 

 ventral, progressively nearer the margin, those of vi lateral, of vii 

 almost dorsal, both placed at the apex of a tubercle. Hypopygium 

 caudal in position, not very big, provided with a median sulcus, and 

 with two (1 + 1) rows of granulae at the upper end of the sulcus. 



Legs finely granulated, unarmed. 



Color: Orange-yellow; scutellum testaceous, with two subbasal, 

 lateral spots, and subapical, transverse band, whitish. Connexivum 

 yellow, its outer border bicolored with alternating testaceous and 

 whitish on each segment. Granulation, with rare exceptions, more 

 pale than the background. 



Size: Total length 2.83 mm. ; width of pronotum 1.10 mm. ; width of 

 abdomen 1.27 mm. 



Holotype: Male (USNM 64204) ; Livingston, Guatemala, Nov. 5, 

 Barber and Schwarz. 



Remarks: Calisius gracilis, new species, is somewhat allied to 

 conjusus Kormilev, 1953, but is smaller; the head is wider than long; 

 antennae shorter and with different proportions; and gi-anulation of 

 the pronotum and scutellum more pronounced. It is allied also to 

 affinis Barber, 1954, but has dift'erent proportions of the antennal 

 segments, a granulated median carina of the scutellum, and different 

 coloration. 



Calisius hilobatus, new species 



FiGtTREs 6, 7 



Male: Head (fig. 6) slightly shorter than wide through the eyes 

 (40 :42) ; anterior process reaching the tip of the 3d antennal segment, 

 slightly widening forward, with the tip distinctly notched and rounded 

 laterall)^ so that it looks bilobate; the antenniferous spines are 

 dentiform, but wider at the base, not so slender as in the preceding 

 species; the postocular spines rather robust and distinctly protruding 

 beyond the outer margin of the eyes; the proportions of the antennal 

 segments (1-4) are 7:5:10:13. 



Pronotum mucli shorter than wide across the humeri (30:75); the 

 spiculoid, erect tubercles of the pronotum are fine and high. 



Scutellum much longer than wide (95:55); the fine, erect teeth of 

 the median carina and the borders are particularly long and dense. 



Abdomen longer than wide (95:85), as measured from below, more 

 tapered posteriorly than in gracilis; the outer rows of tubercles on 



