CHARLES W. METZ. Ill 



a number of interesting freakish specimens, which indicate 

 still more strikingly the tendency of the group as a whole. 

 Probably the most peculiar of these is the female shown in 

 figure 124, which has almost fully formed face marks of the 

 male type. In other respects, such as genitalia, etc., it cor- 

 responds perfectly with the other females, but in this it shows 

 a decided resemblance to the males, having considerably 

 more typical face marks than male specimens of the sanicultz 

 form. Such modifications as these two, in which a tendency 

 toward the markings of the opposite sex is shown, can only 

 be attributed to variations, and illustrate again the import- 

 ance of having series of specimens before describing new 

 species on markings alone. 



PROSOPIS RUDBECKI^E Ckll. and Csd. 1895. 



1895. P. rudbecki<T, Ckll. and Csd. Trs. Amer. Ent. Soc. 22 : 300. 



1896. P. rudbeckicc, race ruidosensis, Ckll. Psyche Supp. 7:30. 

 1896. P. rudbeckice, race subdigitata, Ckll. Psyche Supp. 7:31. 

 ISQQ. P.rudbeckiis,C'k\\. Psyche Supp. 7:31. 



1901. P. rudbeckice, Lov. Ent. News. 12:9. 



P. riiclbeckife, form digitatus (Ckll.). 

 1896. P. digitatus, Ckll. Psyche Supp. 7 : 30. 

 1901. P. digitatus, Lov. Ent. News. 12:8. 

 1909. P. digitatus, Ckll. Ann. and Mag. Nat. Hist. Ser. VIII. 



4:27. 

 1909. P. digitatus fedorica, Ckll. Ann. and Mag. Nat. Hist. Ser. 



VIII. 4:27. 



P. rudbeckise, var. bakbri (Ckll.). 

 1896. P. bakeri Ckll. Psyche Supp. 7 : 26. 

 120A.. P. bakeri,YieT. Can. Ent. 36:93. 



Typical Male. — Small, averages a trifle larger than P. cressoni. Dis- 

 tinguished by long upper processes of lateral face marks, very narrow 

 at base, remote from orbital margin ; by yellow on collar (usually); 

 and by horn-like processes of eighth ventral plate. 



Very closely related to P. cressoni, which it resembles in form and 

 structure. 



Sculpture. — Similar to that of P. cressoni. 



Yellow Markings. — Lateral face marks broad, filling lateral areas, 

 extending above in a straight, narrow line, following the outline of 

 antennal sockets, remote from orbit, ending in a more or swollen tip, 



TRANS. AM. ENT. SOC, XXXVII. 



