956 FAMILY L. SCAK'AH.V.ID/IO. 



XXir. Skkica IMacLeay. ISIO. (TJr., "silken.") 



Robust, (»l)]<)n.u', couvox species of a browii color, often covered 

 with soft silken pubescence and with iridescent reflections. They 

 are of small size, and the body, especially that of female, is broader 

 behind; lalu-um united firmly Avith the nu(h^r surface of clypeus, 

 and therefore indistinct; elytra feebly sulcate; hind eoxse flat and 

 l)roadly dilated into a plate, as wide as any two ventral segments, 

 whicli covers the base of the abdomen. 



The beetles fly about chiefly in the evening and by day are to 

 be found beneath leaves, logs and bark in orchards and woods. 

 Five species have been taken in the State, two of which are here- 

 with described as ucat, \vhile tAvo others may occur. 



KEY TO INDIANA SPECIES OF SERICA. 



a. Clypeus with an acute uotch each side; body smooth, shiniug, uot irides- 

 cent. 



ft. Notch of clypeus deep, distinct, the margin in front of notch strongly 

 reflexed; surface of front and clypeus coarsely, confluently punc- 

 tured, with wrinkles between the punctures. 1805. vespertina. 

 6&. Notch of clypeus small and indistinct, margin less strongly reflext'd; 

 surface finely punctured, without wrinkles or rugosities. 

 c. Suture between clypeus and front with a distinct carina; surface 

 (►f clypeus ;iii(l tlHirax finely iuul densely punctured. 



ISOG. CARINATA. 



CO. Suture between clypeus and front impressed, without carina; sur- 

 face of clyiieus and thorax finely and spjirsely punctured. 



1S07. INTERMIXTA. 



na. Clypeus without a notch on sides; body usually silky-pubescent and 

 more or less iridescent. 

 (I. Head .•ind tliornx witli numerous short, erect .vcllowisii hairs. 



IRirOT.OR. 



(Id. Head and thorax not distinctly hairy. 



r. Size larger, S or more mm. ; body above unicolored. 



/. Upper surface black, feebly shining, scarcely iridescent; clypeus 



densely and rather coarsely punctured. tristis. 



//. tapper surface purplish-brown or piceons, distinctly iridescent ; 



clyiieus more sparsely and finely punctate. ISOS. sericea. 



ec. Size smaller, not over mm. ; head and thorax black or piceous, 



elytra usually reddish-brown. 1800. trogiformis. 



li^O') {,~><i74). Serica VESPERTINA (Jyll.. Sclirmh. Syn. Ins.. I, 1S17, 1)4. 



Oblong-ovate. Chestnut brown to piceous, smooth, shining. Clypeus 

 short, truncate, coarsely, densely and rugosely punctate, the notch deep, 

 distinct; frontal suture impressed. Thorax twice as wide as long, sides 



