Coleopterological Notices, IV. 711 



North American origin, however, as it is no more out of harmony 

 with the general tenebrionide fauna which surrounds it than the 

 monotypic Ephalus of the Atlantic States. 



III. 

 LIP AROCEFH ALUS Makl. 



It is somewhat singular that the true affinities of this genus 

 should have so long escaped observation, especially as its entire 

 lack of harmony with all other types of Paaderini is so strikingly 

 evident. Liparocephalus is a typical but highly specialized member 

 of the tribe Aleocharini, belonging near Phytosus, and having the 

 tarsal joints 4-4-5 in number. 



IV. 



Synonymical Notes. 



In the Revision of the Stenini of America North of Mexico 

 (Philadelphia 1884), I have created a considerable number of 

 synonyms, these becoming evident from time to time as more 

 extended series were compared with the somewhat meagre mate- 

 rial which served as the basis of that memoir. A small part of the 

 synonymy has already been given by M. Fauvel, and I now take 

 pleasure in bringing forward as much as I have been able to ob- 

 serve from recent studies. 



S. rugifer Cas. = anastomozans Cas. This is another interesting example 

 showing the correspondence hetween the arctic fauna of the summit of Mt. 

 Washington and that of the Rocky Mts. 



S. vexatus Cas. = insularis Cas. 



S. placidus Cas. = tumicollis Cas. 



S. villosus Cas. =jejunus Cas. 



S. milleporus Cas. = sectilifer Cas. 



S. difficilis Cas. = tenuis Cas. 



S. nanus St. —nanulus Cas. The eastern pusio Cas. is an allied but appa- 

 rently distinct species, of narrower form and much larger head. 



S. humilis Er. = mammops Cas. 



S. rigidus Cas. = ageus Cas. The European argus is somewhat allied, hut is 

 much narrower, more parallel and less fusiform, with the abdominal segments 

 decreasing less rapidly in width. 



S. hrumalis Cas. ( 9 ) = pauperculus Cas. ( % ) 



S. gratiosus Cas. = hirsutus Cas. 



