1354 FAMILY LXIV. MELOID.K. 



Tribe I. HORIINI. 



In this tribe the head is large, squarely truncate behind; an- 

 tenna? not very long and not thickened toward apex; eyes trans- 

 verse, kidney-shaped ; claws of tarsi cleft to base, the upper portion 

 with fine comb-like teeth, the lower one very slender. One of the 

 two genera is represented in the State. 



II. TRICRANIA Lee. 1860. (Gr., "three times + head.") 



Head triangular; last joint of maxillary palpi longer than 

 third; mandibles not toothed; hind tarsi one-half shorter than 

 tibiae. One of the three species occurs in the State. 



2512 (8021). TRICRANIA SANGTJINIPENNIS Say, Journ. Phil. Acad. Nat. Sci.. 



Ill, 1824, 279; ibid. II, 1G6. 



Elongate-oblong. Black, sparsely clothed with short, erect hairs; ely- 

 tra uniform brick red. Thorax subquadrate. about as wide as head, oiie- 

 tliird wider than long; surface, as well as that of head, densely, coarsely 

 and roughly punctate. Elytra densely and rather finely rugose. Length 

 7.5-9 mm. 



A few specimens taken by Wolcott near Hessville, Lake County. 

 April 15-May 1. Occurs on sorrel and beneath cover in sandy 

 localities. 



Tribe II. NEMOGNATHINI. 



Our members of this tribe are rather small, oblong species, hav- 

 ing the head triangular and squarely truncate behind; maxillary 

 palpi not dilated, the fourth joint longer than third; tarsal claws 

 cleft to base, the upper portion with strong, comb-like teeth, the 

 lower one equal in length, acute and generally more slender than 

 the upper. TAVO of the three genera are represented in the collection 

 at hand. 



KEY TO INDIANA GENERA OF NEMOGNATHINI. 



(i. Maxilla- with the outer lobe prolonged, bristle-like; antemue not thick- 

 ened toward apex. III. NKMOGNATHA. 

 flff. Maxillfe with outer lobe not prolonged. IV. Zoxrns. 



III. NEMOGNATHA 111. 1807. (Gr., "a thread + jaw.") 



In this genus the outer lobe of the maxilla? is prolonged into a 

 slender, flexible process, sometimes nearly as long as the body, which 

 resembles somewhat the sucking tube of a butterfly. -Four of the 18 

 species recognized by LeConte have been taken in the State, while 

 two others may occur. 



