28 Mtninir.s ()/ tin Inditiit Mtijieum. [V«>i,. VII, 



unpunrturrti M'utellum (the ])unrture)« bring contimti to u pair of longitudinal lines), normal 

 in(*>othi>ritrir ('pi>ti>rna with matt uiul imlistinctly ptiiKtureil pu.>tti*ri«)r iingle.s, hnio«)ther 

 al'iloHiiiial >tiTna, ami more tiiu-ly |iuii( tun-tl clvtral gmove.n. 



Popilius tropicus ( I'en-herun). 

 KiK. IV. H>. p. •J^. 



PoMolut Iropicu*, Perrhoron. 1835, pp. l»7l»ll, pi. vii. fip. 4. 



Five specimens from Mexico, ond one without locality record. Ix'ngth ;5( i )-28( ! ) mm. 



Kaup recogiiize.s three varieties «)f this species, hased on the sculpture «»f the upper 

 surface of the head, ami (juotes Truijui to the elTect that the central tubercle is very variable. 

 One uf the specimens before me has a much more strongly developed central tubercle than 

 the others. It is a female and all the others are males*. 



The clypeus aj)pears always to be «listiiictly recurved, and I doubt whether the frontal 

 ridges, which are idteii ab.sent, are ever very strongly developed. They are straighter than 

 in P. guatrmalat'. The parietal ridge.s are not grooved, and the scutellum may be irregularly 

 punctured. In other respects this species re.sembles /'. (juatemalne- 



Popilius brevioripennis (Kuwert). 

 Kij:. IV, 11, ].. J I. 

 OioHMaeniut brcvionprttnm. Kuwort. 1897. p. 'J90. 



One specimen from Mexico, distinctly smaller than the t^'pe {23 instead of 26 mm. 

 long) and with numerous punctures above the scars. The number of the.se punctures is, 

 however, very variable in the closely allied species, P. striatopunctatus, and the diflference in 

 size is within the usual limits of variability. The specimen of /'. brevioripennis differs from 

 the single female .specimen of /*. tropicus before me in having longer antenna! lamellae, 

 a strong median convexity of the anterior margin of the clypeus, a slightly trunctate 

 posterior prostenial plate, mesothoracic episterna like those of P. ititer<jeneiis, and more 

 .tttrongly punctured elytral grooves. 



Popilius striato-punctatus (Percheron). 



Pttxmluf gtrinlo-punclalim, IVrrhrron. 183.'). pp. 101-102. pi. vii. fi>r. 7. 



Numerous specimens from Mexico, one from British Honduras and two from Nicaragua. 

 I>ength 25-28 mm. 



The size of the central tubercle is variable ; it is smaller in males than in females, but 

 the difference is not a sharp one. /*. slriatopunrfotus differs from T. breriortpentns in 

 its larger size, its mf>re strongly developed <cntral tid)er(le and slightly less indi.Minct 

 frontal ridges. The posterior end of the prostenium is variable. 



Popilius cornutus (Fabriciu.s). 



Pitjualut comulus, Fabririii.-. ls"'l. y. 'J.'i'i. 

 Numerous specimens from Florida, two from Mexico and one from each of the following 

 places : — New York, Illinois, Delaware (Wilmington), Ohio and Haiti. I^ength 29-37 °"n- 



' In oiiF the Kmiialia wrrr founr) to br rt*ma4p<<l, and I «ra* unabk to ilrlrrtninr thr m<x with r4Tt«inly- 



