y>26 PAMIT.Y XVI. — -COCCINELLIDiE. 



the specimens should be so mounted that this can be readily done. 

 For convenience the Indiana species are first separated into two 

 groups. 



It a i7 a .a ir ^ li' 



Fig. 194. a, mctacoxal line:'b, first ventral suture; c, hind coxal cavity. (After Horn.) 

 KEY TO QKOUrS OF SPECIES OF INDIANA SCYMNUS. 



a. Metacoxal line Incomplete, gradually curving Into the flr-st ventral su- 

 ture and forming a part thereof, or not joining said suture. (Fig. 

 194, Nos. 1, 2 and 3.) Group A. 



(III. iletaco.Kal line forming an entire arc beginning at the inner border of 

 the coxal cavity and ending at or near the outer front angle of the 

 first segment. (Fig. 194, No. 4.) Group B. 



Geotjp a. 



This group includes the India,na species belonging to Groups 

 A, B and C of Horn's "Studies in Coccinellida^ " and in addition 

 a few that have since been described. 



KEY TO SPECIES OF GEOtIP A. 



u. Metacoxal line passing in an oblique curve from the hind coxal cavity 

 to the iirst ventral suture and joining the latter. (Fig. 104, No. 1.) 

 h. Elytra piceous, each with two pale spots. 



c. Head and thorax yellow, the latter sometimes with piceous basal 



spot. 1004. LIEBECKI. 



(T. Head and thorax black ; form oval ; elytral spots small and oval. 



MYRMIDON. 



hh. Bl.vtra piceous with a large yellow spot at apox, but without spots 

 on disk. 

 il. Thorax black with the apex narrowly, the front angles more broad- 

 ly yellow. 1005. terminatis. 

 (/(/. Thorax yellow with a black basal spot. lOOtJ. partitcs. 

 ((((. ]\retaciixal line not .joining the first ventral suture. 



c. Jletacoxal line extending outward, parallel with the suture and at a 

 slight distance therefrom. (Fi.g. 104. No. -2.) 

 f. Elytra wholly reddish-brown or dull brownish-yellow. 



1007. TNTRUSl s. 



ff. Elytra black or pioenus. marked witli yellow spots. 



g. Each elytron with one rounded yellow spot behind the middle; 



thorax black. lOOS. flavifrons. 



go. Each elytron with two oval spots. ornatus. 



re. :\rotaeoxal line recurved at the outer end (Fig. 104, No. .3) ; elytra 



black, narrowly tiiiped with red; thorax with black disk and red 



"■ii'giiif- 1000. americancs. 



