Dec -> '9I9-1 Notman : Bembidium. 295 



describes a species which he calls arcuatum Lee. and makes gracili- 

 forme a variety of it. In view of the author's well-known inclina- 

 tions it is probable that specimens of Hayward's dentellum were not 

 included in his material, especially since he makes no mention of the 

 difference in the color of the legs, a difference which holds true 

 throughout the series of 79 specimens collected by the writer in many 

 localities in New York state during two seasons. 



It seems, therefore, that Hayward has described a new species 

 under the impression that he was describing dentellum, Thunb. re- 

 peating Mannerheim's error noted above, that the writer has rede- 

 scribed this species as B. lengi in the paper referred to and that the 

 species may be properly called by the latter name until further evi- 

 dence is produced. 



That arcuatum (graciliformc Hayw.) and lengi (dentellum 

 Hayw.) are distinct species is supported by differences in habitat. 

 The specimens of lengi taken in the Adirondacks Mountains were ob- 

 tained by pouring water over leaves and drift among alders on a river 

 sand bar: the specimens collected at Waterville, N. Y., were found 

 along the upper edge of a sloping river sand bank, close to the grass, 

 into which they run unless approached with great caution. Arcua- 

 tum is found most abundantly often in company with B. assimile in 

 low, moist woods in leaves on ground recently under water and not 

 yet dry. Lengi shows a decided preference for higher altitudes ; the 

 elevation at Waterville is 1,200 feet and at the locality in the Adiron- 

 dack Mountains nearly 2,000 feet. 



The following three species collected in the Adirondack Mts., 

 N. Y., are believed to be new : 



Bembidium occultator new species. 



Form moderately convex, oblong, sub-parallel, somewhat elongate ; color 

 black throughout with faint greenish bronze lustre, stronger on the head and 

 thorax. Head finely but distinctly alutaceous ; thorax similar but with the disk 

 obsoletely alutaceous and strongly shining; elytra strongly shining. Head as 

 broad as long, three fourths the width of the thorax and slightly wider than 

 the thorax at apex ; eyes strongly convex prominent ; frontal grooves single, 

 parallel, arcuate, rather broad and indefinite, not continuous with the clypeal 

 grooves which are narrow, deep, arcuate and terminate in front in foveae 

 distant from the anterior margin ; antennae about one half the total length of 

 the body, joints more than twice as long as wide; men turn tooth distinct, 

 rounded at tip. Thorax less than one third wider than long, as wide at base 



