216 



FAMILY TV. DYTLSeiDJE. 



414 - (1297). Ccelambus nubills Lec., Proc. Phil. Acad. Nat. ScL. 1855, 298. 

 Elongate-oval. Head, thorax, legs and -antennae dull yellow; elytra 



with three or four irregular blackish streaks which sometimes merge to 

 form a fuscous cloud behind the middle; under surface black. Length 

 4.3 mm. 



Known from Indiana by a single specimen taken near Green- 

 castle. Putnam County, by Guy Wilson and presented to the writer. 

 July 9. 



415 (1302). Ccelambus impbesso-punctatus Schall., Act. Hal., I, 1783, 312. 

 Oblong-oval. Legs, head and apical half of thorax reddish-brown ; ver- 

 tex, base of thorax and elytra dark brown, coarsely and deeply punctate. 

 Many of the punctures elongate, confluent ; usually three impressed lines 

 on each elytron, reaching to about the middle. Length 5-5.5 mm. 



Lake, Laporte and Marshall counties ; scarce. April 23-Au- 

 gust 16. 



Deronectes depresses Fab., dull brownish-yellow, elytra with 

 black lines more or less confluent, length 4.5 mm., and D. griseostri- 

 atus, DeG.. black, densely punctate, the elytra often with narrow 

 greenish stripes or even entirely greenish-black, length 4.5 mm., 

 both range from New York and Canada to Michigan and westward, 

 and perhaps occur in northern Indiana. 



IX. Hydroporus Clairv. 1806. (Gr., " water + to walk.") 



To this genus belong a large number of small species quite simi- 

 lar in general appearance and therefore difficult to distinguish. 

 They are mostly ovate in form, dark brown in color and have the 

 head never margined in front; the presternum never truncate 

 behind; swimming legs feeble. When captured in a water net, they 

 leap or spring a few inches at a time, much in the same manner as 

 do "click beetles." The following species have been taken or may 

 occur in Indiana : 



KEY TO INDIANA SPECIES OF HYDROPORtS. ... .. . 



a. Hind coxal cavities not contiguous. 

 &. Elytra variegated in color. 



c. Under surface black or piceous ; form oval ; length 3.5 mm. 



416. CONCTNNTJS. 



<■<■. Under surface reddish-brown ; form broader, more obtuse in front, 

 more acute behind; length ."..7 mm. pCjlcher. 

 bh. Elytra unicolorous. 



d. Under surface black or piceous ; prosternal spine large. 



