486 PROCEEDINGS OF THE NATIONAL MUSEUM vol. m 



Discussion. — The type specimen of dallasi was available for study. 

 It is a male that shows well the subbasal angulation on the posterior 

 tibia. In describing the species, Signoret indicated that he thought 

 it might be identical with docilis. Other authors, including Distant 

 (loc. cit.), who attempted to place Walker's species, agree that the 

 two are one and the same. In fact, the type bears the label ''docilis 

 Walk.," in an unknown script. Since the type of docilis is a female, 

 as was reported to the author by Dr. China, no better placement can 

 be made at this time. 



The Panamanian specimens from the Chilibrillo Caves bore the 

 notation "In cave earth." 



Pangaeus (Pangaeus) impressus, new species 



Plate figure 227 



Diagnosis. — The male of this new species may be recognized within 

 the subgenus by the combination of a distinct subbasal angulation 

 posteroventrally on the hind tibia, two setigerous punctures on the 

 costa and the lack of an emargination on the apex of the genital 

 capsule. 



Description. — Based on two males, one broken. Male: Oval; 

 widest behind midlength. 



Head: Length two-thirds width, 1.00(0.93-1.07): 1.56(1.53-1.60,) 

 interocular width, 0.94(0.92-0.96); anterior outline nearly or quite a 

 full semicircle, clypeus as long as juga, distinctly narrowed apically; 

 surface shining, impunctate; jugum depressed medially, with one 

 submarginal puncture adjacent to eye; ocelli moderate, separated 

 from eye by space almost twice transverse ocellar width; jugum ven- 

 trally and maxillary plate, except basally, polished, impunctate. 

 Antennal segments: I, 0.26(0.26-0.26); II, 0.33(0.33-0.33); III, 

 0.45(0.44-0.46); IV, 0.56(??-0.56); V, 0.62(??-0.62). Bucculae httle 

 more than half as high as labial II; labium reaching between middle 

 coxae. Labial segments (missing from smaller specimen): I, 0.46: 

 II, 0.74:111, 0.73: IV, 0.46. 



Pronotum: Length more than half width, 1.84(1.71-1.97) :3.43 

 (323-3.64) ; anterior margin shallowly, doubly emarginate ; lateral margin 

 straight on basal half, with five setigerous punctures submarginally; 

 transverse impression median, impressed across full width, marked by 

 medially interrupted, regular row of very close-set punctures; lobes 

 impunctate except for few weak punctures laterally on anterior lobe 

 and several distinct ones on middle of posterior lobe. 



Scutellum: Length Httle less than width, 2.08(1.95-2.21) :2. 15 

 (2.02-2.28); disc shining, with few to several scattered punctures. 



Hemelytron: Clavus and corium alutaceous; clavus with one row of 

 punctures; mesocorium with one complete and basal part of second 



