470 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



the genus. Whether this is just coincidence or reflects the adaptation 

 to conditions found at either end of its geographic range remains to 

 be demonstrated by more detailed biological information about the 

 species concerned. 



Pangaeus (Homaloporus) punctilinea, new species 



Diagnosis. — The row of distinct punctures in the subapical im- 

 pressed line of the pronotum will permit easy recognition of this 

 species within the subgenus. 



Description. — Described from three females. Female: Oval, 

 sides subparallel, faintly widened behind midlength. 



Head: Length almost two-thirds width, 0.97(0.96-1.00): 1.54 

 (1.51-1.61); interocular width, 1.05(1.03-1.08); anterior outline a 

 somewhat flattened semicircle, clypeus as long as juga and slightly 

 narrowed at apex; surface weakly convex, polished, with numerous 

 minute punctures and several radiating weak rugae on each jugum; 

 submarginal setigerous punctures somewhat variable in arrangement, 

 two or three close-set punctures with two more widely separated ones 

 beyond, or four close-set punctures with one widely separated puncture 

 distally; ocelli very small, separated from eye by a space equalling 

 four to five transverse ocellar diameters; jugum ventrally and maxil- 

 lary plate (except base) shining, impunctate. Antennal segments: I, 

 0.30(0.30-0.31); II, 0.33(0.32-0.34); III, 0.35(0.34-0.36); IV, 0.44 

 (0.43-0.4G); V, 0.51(0.49-0.54). Bucculae about half as high as 

 labial II; labium reaching between middle coxae. Labial segments: 

 I, 0.54(0.51-0.56); II, 0.85(0.83-0.90); III, 0.67(0.64-0.70); IV, 

 0.50(0.50-0.50). 



Pronotum: Anterior margin moderately, doubly emarginate; side 

 margins faintly convex on basal half, more strongly so on apical half, 

 with submarginal row of seven to nine setigerous punctures; trans- 

 verse impression postmedian, obsolete, absent medially, marked by 

 narrow, irregular band of distinct punctures; anterior lobe distinctly 

 punctured in complete, subapical impressed line, with few to many 

 distinct punctures laterally, discally with numerous obsolete, minute 

 punctures; posterior lobe medially with few coarse and numerous 

 minute punctures, laterally with a few coarse punctures. 



Scutellum: Length subequal, longer or shorter than width, 1.77 

 (1.75-1.82) :L80(1. 74-1.82); disc polished, discally with numerous 

 large punctures except at base and apex. 



Hemelytron: Clavus and corium polished, clavus with one, nearly 

 complete row of distinct punctures; mesocorium with two complete 

 rows of punctures paralleling claval suture, discally with numerous 

 small punctures scattered full length; exocorium with numerous 

 distinct punctures scattered for full length; costa with two setigerous 



