March, I9I5-] SCHAEFFER : New COLEOPTERA. 47 



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Fig. 



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EXPLANATIOX OF PlATE IV. 



1. Cyrtolobits helena, lateral view of male. 



2. Cyrtolobtis helena, lateral view of female. 



3. Cyrtolobus helena, dorsal view of male. 



4. Cyrtolobtis helena, dorsal view of female. 



5. Cyrtolobus helena, outline of anterior aspect. 



6. Cyrtolobus qiierci, outline of anterior aspect. 



NEW COLEOPTERA AND MISCELLANEOUS NOTES. 



By Charles Schaeffer, 



Brooklyn, N. Y. 



Trechus borealis new species. 



Elongate, piceous, shining, antenna, palpi and legs paler. Frontal im- 

 pressions deep ; eyes moderately prominent. Prothorax transverse, anterior 

 margin feebly emarginate, basal margin straight at middle, more or less 

 oblique on each side ; lateral margin moderately arcuate in front, convergent 

 behind ; basal angles reflexed, obtuse not acute ; median line deeply impressed. 

 Elytra elongate-oval, generally with five more or less distinctly impressed, 

 ptmctured strire. Length 4 mm. 



Labrador, Battle Harbor (Engelhardt) ; Newfoundland, Bay St. 

 George (Engelhardt) ; New Jersey; Lg. Island, Bellport (Nicolay). 



This is the species I incorrectly identified and described in my 

 synopsis^ as Trechus ruhens. The latter is a European species and 

 I doubt its occurrence in North America, at least, it differs from any 

 North American species which I have seen. Herr Edmund Reitter 

 of Paskau, Bohmen, very kindly sent nie a few specimens of the true 

 T. rubeiis which resemble the below described T. chalybcrus var. 

 coloradcitsis very much but have longer antennal joints, less promi- 

 nent eyes, longer elytra with five impressed, punctured elytral striae, 

 the prothorax less transverse and relatively longer with lateral 

 margins more widely reflexed and the hind angles rectangular and 

 acute. 



The above described T. borealis has some of the characters of T. 

 rubcns, but the prothorax is relatively shorter with the hind angles 



1 Bull. Am. Mus. Nat. History, Vol. XIV, p. 210, pi. XXVIII, fig. i. 



