THE CEA WLTNG WATE R BE RT LES. 



20:] 



386a ( ). llALIPLUS CEIBARIUS SUBGTJ TTA T U S Lee., MS. 



A dark variety of the preceding having the vertex black; the elytra! 

 spots disconnected and more distinct. Length 4 mm. 



Pine, Lake County; May 12. This and eribarius were described 

 from Lake Superior. 



387 (1226). Haliplus ruficollis DeG., Mem. IV, 1774, 404. 



Ovate. Head and thorax pale dull yellow with- 

 out spots ; elytral spots larger than in borealis, all 

 rounded, the two on median third often more or 

 less confluent. Apex of elytra not sinuate. Length 

 2.5-3 nun. (Fig. 102.) 



Pine and Hudson lakes, Laporte County; 

 ponds near Richmond; frequent. May 25- 

 August 20. Probably occurs throughout the 

 northern half of the State. 



388 (1227). Haliplus longulus Lec. (Crotch). 



Trans. Amer. Ent. Soc, IV, 1873, 

 385. 



Fig. 102. (Original.) 

 Line shows natural length. 



Close to ruficollis hut more slender. Elytra with basal spot wanting ; 

 the central spot dilated, triangular, the others indistinct. Length 3 mm. 



Pine, Lake County; Marion County, from pond near Broad 

 Ripple ; scarce. April 3-May 28. 



II. Cnemidotus 111. 1802 (Gr.. "wearing leg armor.") 



Our members of this genus are a little larger and more robust 

 than those of Haliplus. All have the thorax marked at base by 

 two round black dots, and the elytral rows of punctures more or 

 less irregular on basal third. Pour nominal species have been 

 taken in the State. 



KEY TO INDIANA SPECIES OE CNEMIDOTUS. 



a. Hind femora with a broad pale ring near apex ; elytra distinctly oblique- 

 ly sinuate near tips. 

 I). Head entirely pale. 3S9. 12-punctatcs. 



1)1). Head with vertex black. 390. edentdlus. 



aa. Hind femora wholly dark brown or blackish. 



c. Elytra without a sub-humeral spot ; median subsntnral spot continent 

 with the sntural line to form a discal blotch. 301. muticus. 



cc. Elytra usually with a small subhumeral spot; median subsntnral spot 

 free or barelv touching the sutnral line. 392. peduncllatvs. 



