508 FAMILY XVI. — COCCINELLID.I:. 



wliat a resciiiblanci' to a iiiiinilc alligator in shape, and are known 

 under thai name by children in some parts of the eountry. As 

 is the case with other grubs, they are much more voracious than 

 the perfect beetles. When full grown the larva suspends itself 

 by the hinder end to some convenient leaf or branch and either 

 pushes the larval skin upwards, where it remains in a little w^ad 

 about the tail, or remains within it until ready to emerge, when it 

 bursts the skin open along the back and emerges a perfect beetle. 



The principal literature treating of the North American mem- 

 bers of the f amilj- is as follows : 



LeConte. — "Remarks upon the Coccinellida? of the United 

 States," in Proc. Phil. Acad. Nat. Sci., VI, 1852, 129-141. 



Crotch. — "Revision of the Coccinellidse of the United States," 

 in Trans. Amer. Ent. Soc, IV, 1873, 363-382. 



LeConte. — "Short Studies of North American Coleoptera (Hy- 

 peraspis)/' in Trans. Amer. EntrSoc, VIII, 1880, 186-188. 



Horn. — "Studies in Coccinellidae," in Trans. Amer. Ent. Soc, 

 XXII, 1895, 81-114. 



Casey. — "A Revision of the American Coccinellida^" in Journ. 

 N. Y. Entom. Soc, VII, 1899, 71 -1(;3. 



Leng. — "Notes on Coccinellida\" in. Journ. N. Y. Ent. Soc, XI, 

 1903, 35-45, 193-213 ; XVI, 1908, 33-44. 



About 150 members of the family are listed by Henshaw as be- 

 longing to the North American fauna. To these Casey added in 

 bis Synopsis 179 new names, a numl)er of Avhicli are evidently based 

 on. geographic races or varieties, while many of them will doubtless 

 ])i"ove good species. Altogether it is |)i'obable that about 250 known 

 species occiu' in this country. 



For eonveni(;nce the family, as represented in th(> State, is first 

 divided into eight tribes by the following tal)le, moditied from that 

 used by IMaj. Casey: 



K1;Y 10 INDIANA TKIBKS OF COCCINELIJD.E. 



(I. Middle eoxjo narrowly separiited ; body elongate-oval. iciMbrous; legs 

 long, free, tbe femora extending beyond the sides of tbe body; abdo- 

 men wHli sixth segment visible in both sexes; head not d('('i)ly in- 

 serted, the thorax strongly siiiunte but not covering the eyes. 



Tribe I. IIippodamiini, p. r)0;». 

 (Id. JNIiddle co.\:c widely se|i;irnted ; legs shorter, the femora generally iiel 

 exiending heyend the sides of the body; head deeply inserted, the 

 tluir;i\ covering ;i hirge jKirlion of the eyes. 

 />. Front coxnl cavities closed behind; eyes finely faceted. 



