June 1899]. Casey : On American Coccinellid.'e. 73 



The family may be divided into numerous tribes, as follows: — 

 Middle coxae narrowly separated ; body glabrous, elongate-oval, the epipleurre mod- 

 erately wide, horizontal ; legs long, free, the femora extending beyond the sides 

 of the body ; abdomen with the genital or sixth segment visible in both sexes ; 

 head not deeply inserted, the prothorax strongly sinuate but not covering the eyes ; 



epistoma, eyes and antennce as in Coccinellini Hii-podamiinI 



INIiddle coxce widely separated ; legs shorter, the femora generally not extending be- 

 yond the sides of the body ; head deeply inserted, the pronotum covering a con- 

 siderable part of the eyes except in certain rare cases such as Selvadius 2 



2 — Eyes finely faceted 3 



Eyes coarsely faceted ; antennae long, with the club loose ; body pubescent ; abdo- 

 men with the sixth segment visible in both sexes 18 



3 — Epipleurae wide, concave, strongly descending externally ; body loosely articulated, 



generally rounded in form 4 



Epipleurte narrow, generally horizontal, flat or feebly concave ; body compact, 



generally oval in form 14 



4 — Fourth joint of the maxillary palpi securiform 5 



Fourth joint narrow, elongate with circular section, finely acuminate at tip 13 



5 — Epistoma narrowed from the base, sometimes expanded slightly at apex, the an- 



tennal fossae more or less exposed 6 



Epistoma broadly dilated, concealing the antenna and subdividing the eyes II 



6 — Legs free ; antennae more or less elongate ; sixth ventral segment small but visible 



in both sexes 7 



Legs retractile and lodged in moderately deep to shallow depressions ; antenna; 

 short ; abdomen with five segments, the fifth longer, the sixth always invisible. 10 



7 — Upper surface of the body glabrous 8 



Upper surface pubescent 9 



8 — Epistoma more or less sinuate at apex and obliquely dentiform at the sides, the 

 sinus generally more or less closed by a semi-corneous additional piece united to 

 the front without visible suture ; antennas more or less approximate to the eyes, 

 which are narrowly and rather deeply emarginate, the fossae large, with dis- 

 tinctly overreaching superior ridge ; prothorax deeply emarginate ; body mod- 

 erate to large in size Coccinellini 



Epistoma narrower, truncate, without serai-corneous additional piece and not ob- 

 liquely denticulate at the sides, the antennae more frontal in insertion and more 

 distant from the eyes, which are broadly and more feebly sinuate, the fossae small, 

 more exposed frontally and with very slight superior ridge ; body smaller, with 

 thinner integuments, the head small, the prothorax smaller, very feebly sinuate at 

 apex, with broadly rounded apical angles; antenna; slender, with the last joint 



elongate Psylloborini 



9 — Antennas long, with loosely articulated club, inserted within very small and com- 

 pletely exposed subfrontal foveae remote from the eyes, nearly as in Psylloborini, 

 the eyes not or only very feebly sinuato-truncate ; epistoma truncate, not denticu- 

 late at the sides ; prothorax deeply emarginate at apex ; mandibles bifid at tip 

 and denticulate within ; body rounded or elongate-oval, the legs free. 



Epilachnini 



