150 Goleo^yterological Notices^ VI. 



epistoraa, enables us to discriminate the rather closel}' allied 

 forms related to salicola. 



The species are generally found running rapidly- on soft saline 

 mud, and those discovered thus far may be distinguished as 

 follows : — 



Antennae long, the last joint much narrower, elongate, cultriform and feebly 

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

 what dilated; -subgenus Taxaethrus Lee 1. salinus 



Antennte 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 Tanaethropsis n. n. 

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

 black. 

 Elytra very much abbreviated, exposing at least one-third of the abdo- 

 men; basal impression of the head broad and verj- feeljle. 

 Elytra dehiscent, obliquely and anteriorly truncate toward the sutural 



angles at apex, the angles obtuse 2. brevipeniiis 



Elytra not dehiscent, apparently connate throughout, semicirciilarly 



rounded at apex 3. iiubif er 



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

 hiscent and broadly arcuato-truncate at apex; basal impression of the 



head narrow and strong 4. tricolor 



Elytra with shallow variolate punctures of larger size scattered among the 

 minute pubiferous punctures. 

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

 distinctly dehiscent and evenly arcuato-truncate at apex; head and 

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

 nounced. 

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



the middle; apex pale 5. salicola 



Eh'tra densely opaque, with a median and apical fascia of deep black; 



bod}' narrower, the head much smaller 6. densus 



Elytra black throughout, exposing slightlj' more of the ti^) of the abdo- 

 men, narrowly dehiscent at apex; body much smaller and entirely 

 l)lack; head and pronotum sparsely and very shal lowly punctate, with- 

 out trace of granulation 7. aliitaceiis 



Subgen. Taiiartlirus Lee. 



1. T. saliiius Lee. — Ann. Lye. Nat. Hist., X. Y., Y, p. 156; Proe. Acad., 

 Phila., 1852, p. 104. 



Subparallel, depressed, polished throughout, rufo-testaceous, 

 the elytra slightly clouded with blackish near the scutellum ; pu- 

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

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



