216 PROCEEDINGS OF THE NATIONAL ^lUSEUM vol. 109 



blunt tubercles placed in two rows: four in the basal row and two 

 in the apical row; dispersed, fine, scale-shaped granulation between 

 these tubercles. Median carina stout, granulated; the lateral borders 

 also granulated, granulae are the highest in the middle and gradually 

 lower toward the base and the tip. Disc of the scutellum roughly 

 punctured. 



Abdomen (fig. 9) elongately ovate, longer than wide (80:52) ; lateral 

 margin parallel, anteriorly and posteriorly roundly converging. The 

 discs of the connexiva with scale-shaped, fine granulation. The disc of 

 tergum vii longitudinally elevated, and with bigger granulation. 

 Sternum vii laterally produced backward as two (1 + 1) big, rounded, 

 granulated lobes, similar to affinis Barber, 1954. The genital lobes 

 small, cylindrical, placed beneath the big lobes, and not visible from 

 above. Spiracles ii-vi ventral, placed progressivel}^ closer to the 

 border, those of vii lateral, situated on tubercles, those of the lobes 

 (viii) terminal. Venter covered with fine scale-shaped granulation ; 

 propleura with a gi'oup of larger granulations. 



Color: Pale testaceous; the fore half of the head, antennae, the 

 apical third of the scutellum, and the scale-shaped granulation of the 

 connexivum more pale, sometimes whitish. 



Size: Total length 4.27 mm.; width of pronotum 1.42 mm.; width 

 of abdomen 1.73 mm. 



Holotype: Male (USNM 64206), Livingston, Guatemala, July 5, 

 H. S. Barber. 



Remarks: Calisius insignis, new species, is allied to contubernalis 

 Bergroth, 1913, from which it differs in having antennae slightly 

 shorter than the head (23:24). Second segment slightly shorter than 

 the fti-st (5:4) and failing to reach the tip of the anterior process; 

 hypopygium on the underside without longitudinal depressions, but 

 with two (1 + 1) medially convergent rows of granulae. Also it is 

 allied to affinis Barber, 1954, in having similar big, rounded, posteriorly 

 protruding lobes on sternum vii, but insignis is larger, has the margins 

 of the scutellum denticulate, and differently proportioned antennal 

 segments. 



Calisius longiventris, new species 



Figures 10-12 



Male: Head (fig. 10) almost as long as wide through the eyes 

 (41:40). Anterior process parallel, anteriorly rounded, reaching to 

 the tip of the 3d antennal segment. Antenniferous tubercles denti- 

 form, exteriorly parallel, each reaching to the tip of the first antennal 

 segment. Eyes small. Postocular tubercles small, dentiform, each 

 attaining the outer margin of the eye. Infraocular carinae formed 

 by a few tubercles; shelves (space between the middle of the vertex 



