212 PROCEEDINGS OF THE NATIONAL SlUSEUM vol. i09 



closed posteriorly, its borders low, granulated ; rostrum reaching to the 

 hind border of the groove. 



Pronotum (fig. 4) trapezoidal, much shorter than wide across the 

 humeri (28:68), declivous forward; interlobal, transverse depression 

 feebly marked; fore border subtruncate; lateral margins divergent 

 posteriorly, slightly emarginate in the middle, near the anterior 

 angles provided with a row of 4-5 big, blunt, whitish tubercles, the 

 middle ones largest; humeri convex, rounded, and provided with a 

 double row of big, blunt tubercles; hind border convex in the middle 

 and laterally. Fore disc with four (2 + 2) big, erect, blunt tubercles; 

 hind disc with four (2 + 2) longitudinal rows of similar tubercles; 

 these rows are continued on the base of the scutellum ; the inner rows of 

 the hind disc correspond to two rows of the fore disc, and are divergent 

 posteriorly; the outer ones are curved, with the convex side outward. 

 The discs between the tubercles are roughly punctured. 



Scutellum big, much longer than wide (82 : 50) , in the middle later- 

 ally, slightly emarginate; at the base with a high, triangular elevation, 

 posteriorly continued into a median ridge; this elevation is provided 

 with four (2 + 2) rows of big tubercles, forming a continuation of those 

 of the pronotum; between the larger tubercles are scattered smaller 

 granulae. The median ridge is gradually tapered to the tip and is 

 provided with a row of thin, erect teeth; similar rows of thin, erect 

 teeth are on the lateral margins, forming a palisade on either side; the 

 disc between the margins and median carina is roughly punctured, 

 but without granulation. 



Hemelytra mostly concealed beneath the scutellum, each with only 

 the narrow, outer edge of the greatl}'^ reduced corium exposed. 



Abdomen ovate, slightlj^ longer than wide (80:78), as measured from 

 below. Connexivum very wide; each segment with a round, callous 



Further Explanation of Figures 1-18 



1-3, Tip of abdomen, dorsal aspect, male: 1, Calisius insignis, new species; 2, Calisiopsis 

 ampliceps Champion; 3, Aradacanthia multicalcarata Costa. 



4, 5, Calisius gracilis, new species, male: 4, head and pronotum; 5, tip of abdomen, ven- 

 tral aspect. 



6, 7, C. hilohatus, new species, male: 6, head and pronotum; 7, tip of abdomen, ventral 

 aspect. 



8, 9, C. insignis, new species, male: 8, head and pronotum; 9, tip of abdomen, bentral 

 aspect. 

 10-12, C. longiventris, new species: 10, male, head and pronotum; 11, male, tip of abdomen, 



ventral aspect; 12, female, tip of abdomen, ventral aspect. 

 13, 14, C. hackeri, new species, male: 13, head and pronotum; 14, tip of abdomen, ventral 

 aspect. 



15, C. australis, new species, female, tip of abdomen, ventral aspect. 



16, Calisiopsis minutus, new species, female, tip of abdomen, ventral aspect. 



17, 18, Antenna of female: 17, Calisiopsis ampliceps Champion; 18, C. minutus, new species. 



