750 Goleopterological Notices, VI. 



epistoraa, enables us to disciiininate the rather eloseh" allied 

 forms related to salicola. 



The species are generally found running rapidly on soft saline 

 mud, and those discovered thus f:ir may be distinguished as 

 follows : — 



Anteiinse long, the last joint ranch narrower, elongate, cnltriform and feebly 

 hilobed; tibial spurs very long; tarsi longer and thicker, the anterior some- 

 what dilated; -subgenus Taxarthrus Lee 1. salinus 



AntenniE much shorter and submoniliform, the last joint not narrower and 

 much shorter, acorn-shaped ; tarsi shorter, very slender and filiform through- 

 out in both sexes; tibial spurs shorter; — subgenus Tanarturopsis n. n. 

 Elytra a\ ith a single set of minute pubiferous punctures, pale, fasciate with 

 black. 

 Elytra very much al)breviated, exposing at least one-third of the abdo- 

 men; basal impression of the head liroad and verj' feeble. 

 Elytra dehiscent, obliquely and anteriorly truncate toward the sutural 



angles at apex, the angles obtuse 2. brevipennis 



Elytra not dehiscent, apparently connate throughout, semicircularly 



rounded at apex 3. nubifer 



Elytra longer, leaving merely the tip of the abdomen exposed, feebly de- 

 hiscent and broadly arcuato-truncate at apex; basal inipre.ssion of the 



head narrow and strong 4. tricolor 



Elytra with shallow variolate punctures of larger size scattered among the 

 minute pubiferous punctures. 

 Eljtra pale, fasciate with black, covering all but the tip of the abdomen, 

 distinctly dehiscent and evenl}' arcuato-truncate at apex; head and 

 pronotum granulose; basal impression of the head narrow and pro- 

 nounced. 

 Elytra slightly sliiuing but alutaceous, with a narrow nubilate fascia at 



the middle; apex pale 5. salicola 



Elytra densely opaque, with a median and apiciil fascia of deep black; 



body narrower, the head much smaller 6. densilS 



Elytra black throughout, exposing slightly more of the tip of the abdo- 

 men, narrowly dehiscent at apex; l»ody much smaller and entirely 

 black; head and pronotum sparsely and very shallowly punctate, Avith- 

 out trace of granulation 7. alutaceiis 



Subgcn. Taiiartlirus Lee. 



1. T. j^aliiiUK Lee— Ann. Lj-c. Nat. Hist., N. Y., V, p. 156; Proc. Acad., 

 Phila., isry_>, p. 104. 



Subparallel, depressed, polished throughout, rufo-testaceous, 

 the elytra slightl}' clouded with blackish near the scutellum ; pu- 

 bescence moderately long, fine, decumbent and distinct, the tibiit 

 and tarsi bristling with long erect setit. Head large, subquadrate. 



