i>i.-. is-il l.iNi. \ Hkl I KNMiii i.i-.k. C'liioi'i. N. I-:. Amu.' 



l^'.t 



.S\//,>/>s/s of species. 

 ^rclmlln lo-.tlieil al middle; iobes obli(|uely emargiiiatc; 51I1 iiittispacc 

 of elytra puncturctl. 

 I'^lytral slii.c punctale. 



Miackish brown; elylia somcwiial depicsscu, stilu Jcqici, 



densely punctale lineolatu.s. 



Kiifous; eiylral slriiv feebly punctate; slrunyly depiesse.l. planulatUS. 

 Kiifous; elytra cylindrical, stri>c punctate ferrugineous. 



Kiifous; elytra stron{;ly depressed; llioraiic ani^iis p:uniinciit 



before the base amphlbius. 



S. lineolatus .S>v.— lilackish, legs and anlenii.c rufous; elytra 

 suincwhal ilcpix'ssed, slri;v det-p. and densely pmutm-ed. I.eni^tli. 

 . 16 inch. = 4 mm. 



Habitat, N. E. America. 



S. planulatus /.^r. — Rufous or purplish; stronj^ly depresseil; 

 elytra stri;e feebly [Huictate. Length, .20 inch. = 5 mm. 

 Habitat, New ^"ork. 



S. ferrugineus Pitt^.. — Rufous; elytra cylindrical. >iria' deep, 

 punctures feeble. Le.igth, .12 inch. = 3 mn). 



Habitat, N. E. America. 



S. amphibius Ha/ii. — Rufous, elytra strongly ilepresscd, 

 striie deep, punctures distinct; thoracic angles prominent before 

 the base. Length, .1: inch. == 3 mtn. 



/fabitat, N. V. and westwanl. 



Ardistomis J'lit:. 



Small species; thorax rounded, considerably narrower than 

 elytra; margin of elytra interrupted posteriorly and with an 

 internal plica (fold along the suture); mandibles siemler jirolon^ed 

 and not arcuate as in other genera of Cliviinc. 



Lives in damp sandy places like Dysibiriiis, aloii- banks ol 



streams and ponds. 



S\/iopsis oj s/>ei/es. 

 liluck, snioolli; cl)ira sliiatc. 

 Stri.e not punctured. 



.\ntenn;v .md leys piceous; 3rd interval of elylia with luur it 



SIX punctures 



Schaumii 



Antenniv, legs and apical spot of elytra rufous obliquata. 



Strict punctured in front, obliterated behind ... morio. 



Green or yrecnish black; elytra with a series of seligerous punclure- 



Thora.x punctured only at "he margin \iridls. 



Thoracic disc with a few punctures .... puncticollis. 



* .\ suutliern species, nut found northward. 



