582 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



Discussion. — Although treated as a valid new species here, this 

 form may prove, with more specimens from the southern half of 

 California, to merge into discrepans. If this happens it will have to 

 fall into synonymy, but for the present it is probably better to have 

 the differences between the two brought forcibly to the attention of 

 collectors who can solve the problem in the field or possibly by breed- 

 ing the two forms. 



Dallasiellus (JPseudopangaeus) vanduzeei, new species 



Plate Figure 263 



Diagnosis.— The large size and polished corium permits ready 

 recognition of this species within the subgenus, as does the broad 

 scutellum which is as wide as or wider than long. 



Description. — Male: Oval, widest behind the middle. 



Head: Length about three-fourths width, 1.55(1.53-1.56): 

 2.15(2.10-2.20); interocular width, 1.44(1.43-1.47); anterior margin 

 a broad, slightly flattened semicircle; juga as long as clypeus, strongly 

 narrowing latter at apex; jugal surface with strong, radiating rugae 

 and numerous minute punctures; jugum ventrally and maxUlary 

 plate impunctate. Antennal segments: I, 0.49(0.46-0.53); II, 

 0.63(0.62-0.64) ; III, 0.62(0.61-0.63) ; IV, 0.81 (0.80-0.84) ; V, 0.78(0.76- 

 0.80). Bucculae about as high as labial II. Labial segments: I, 

 0.75(0.73-0.78);II, 1.32(1.30-1.37) ;III, 1.16(1. 13-1.23) ;IV, 0.68(0.67- 

 0.70). 



Pronotum: Length more than half width, 2.89(2.84-3.02) : 5.22(4. 97- 

 5.40); anterior margin rather deeply and simply emarginate; side 

 margins entu-e, narrowing from just anterior to base, with submarginal 

 row of fourteen setigerous punctures; transverse impression obsolete 

 to absent, marked by an irregular band of widely separated punctures ; 

 remainder of surface virtually impunctate except for numerous close- 

 set punctures laterally on anterior lobe. 



Scutellum: Wider than long, 3.42(3.27-3.60) :3.31(3. 15-3. 45); sur- 

 face polished, discally with several coarse, often sunken punctures, 

 irregularly spaced, 



Hemelytron: Corium and clavus polished; former usually with dis- 

 tinct punctures restricted to one complete and the basal part of a 

 second row paralleling claval suture, some specimens with several 

 distinct punctures at apex of exocorium; clavus impunctate or with 

 few punctures near base; costa with five to seven setigerous punctures; 

 membranal suture nearly straight, lateral angle slightly acute; mem- 

 brane slightly surpassing apex of abdomen. 



Propleuron: Depression punctate ventrally; prosternal carinae 

 very low, acute. 



