THE LAMICLUCOKN BEETLES. 947 



longer than in (Fquali*. Front tibia- with two teeth on the outer margin 

 near the tip and with several small blunt teeth near the base. Length 5- 

 7 mm. 



Frequent beneath dead fish and other carrion and rubbish along 

 the beach of Lake Michigan in Lake and Porter counties; not noted 

 elsewhere in the State, though probably occurs throughout, as Dury 

 records it from Cincinnati. April 9-July 3. 



1790 (0030). TROX ATROX Lee., Proc. Phil. Acad. Nat. Sci., VII, 1S54, 214. 



Elongate-ovate. Black, surface without coating. Thorax transversely 

 quadrate, sides moderately curved in front, slightly sinuate at base ; hind 

 angles acute, surface sparsely punctured, median groove wholly obliterated 

 except a slight impression in front of scutellum. Elytra with broad, shal- 

 low striae bearing transverse rather distant punctures; intervals feebly con- 

 vex and with a single row of small punctures each of which bears a short, 

 erect brownish hair. Hind femora with a row of spines along the hind 

 margin. Length 8 rnrn. 



Known from Indiana by two specimens taken near Lafayette, 

 one each in the collections of Dury and Webster. Recorded here- 

 tofore only from Illinois and Kansas. 



Subfamily II. MELOLONTHINAE. 



The members of the subfamily are mainly distinguished by 

 the position of the abdominal spiracles, which are in part placed on 

 the superior portion of the ventral segments, the rows feebly di- 

 verging, the last spiracle usually visible behind the elytra. They 

 are usually of looser, more slender build, with longer legs than the 

 members of the preceding subfamily. The clypeal suture is trans- 

 verse; club of antennae often elongated in males; tip of the abdo- 

 men usually visible beyond the elytra; color in general some shade 

 of brown. In all of our genera the mandibles and labrum are be- 

 neath the clypeus and not visible from above. In habits they are 

 entirely vegetable feeders, occurring on leaves and flowers, or flying 

 about in the evening, and are often attracted in great numbers to 

 electric and other lights. 



But six of the 21 genera into which the subfamily is divided are 

 represented in the Stale. The following papers treat of these 

 genera and to them the special student is referred for more detailed 

 descriptions : 



LeConte. "Synopsis of the MeloJonthidce of the United 

 States." in Journ. Phil. Acad. Nat. Scl, New Ser., Ill, 1856, 

 225-258. 



