CRYPTOCEPHALUS IN A^IERICA NORTH OF MEXICO 81 



base and at middle before apex, basal spot sometimes extending to 

 middle of elytron on second and fourth intervals. With seven rows of 

 punctures and a short series behind humerus, sixth row sometimes 

 slightly confused, punctures a little smaller, finer than usual, distinctly 

 finer to apex; inner and outer rows usually distinct at apex, often 

 clearly meeting, punctures sometimes obsolete at apex. 



Prosternum: Anterior margin in both sexes evenly arcuate. 



Length: 2.0 to 2.7 mm. 



Discussion. — All five specimens from Virginia (apparently the 

 northernmost part of the range) bear rather distinct dark markings. 

 Specimens from other parts of the range (including Florida) rarely 

 have markings that are as distinct. 



The concavity of the fifth abdominal sternite of the female is less 

 developed in this species than is usually the case. 



Distribution. — The USNM collection of the species totals 52 

 individuals from Florida, Georgia, North Carolina, Louisiana, and 

 Virginia. 



Cryptocephalus quadruplex Newman 



Figures 22, 23 



Cryptocephalus quadruplex Newman, 1841, p. 78. 



Cryptocephalus quadriguUulus Suffrian, 1852b, p. 65. [New synonymy.] 



Pronotum: Dark brown, to (usually) black; infrequently with a 

 faintly bluish luster; punctation dual, larger punctures minute to 

 small, sometimes coarse. 



Elytra: Dark brown to black, each elytron with light orange to 

 orange markings as follows: at base from third stria to side and pos- 

 teriorly to middle of elytron, often nearly square, this sometimes 

 reduced and with humerus dark, sometimes with inner posterior angle 

 produced toward (but not attaining) suture; with a moderate-sized 

 spot at apex. With eight or nine rows of punctures, fifth sometimes, 

 sixth and seventh usually confused (one of latter two often much 

 reduced, thus leaving eight rows) ; punctures rather larger, sparser than 

 usual, much finer to apex; inner and outer rows usually distinct at 

 apex, often clearly meeting, punctures at apex sometimes obsolete. 



Prosternum: Anterior margin in male with a distinct, usually sharp, 

 ventrally directed spine; anterior margin in female evenly arcuate to 

 somewhat produced into a broad, sometimes pointed lobe. 



Length: 2.9 to 4.0 mm. 



Discussion.— C. quadriguttulus until now has been ranked as a 

 subspecies of quadruplex, and the two subspecies have been separated 

 on the basis of the relative size of the basal spot of the elytra. Leconte 

 (1880, p. 200) described the basal spot of quadruplex as small, re- 

 duced, and a little wider behind; that of quadriguttulus was described 



