STAPHYLINID^E 



159 



posteriorly, the carinae wholly obsolete; antennae pale, rather short, the 

 second joint only slightly shorter than the first and fully one-half longer 

 than the third, fourth nearly as long as wide, fourth and following to the 

 tip evenly and rather rapidly wider, becoming notably thick, the tenth 

 joint twice as wide as long, the last very obtuse, as long as the two pre- 

 ceding; prothorax not quite one-half wider than long, parallel, with 

 evenly and feebly rounded sides and a small rounded ante-scutellar 

 impression; elytra rather transverse, with slightly diverging sides, at 

 base equal in width to the prothorax, the suture about as long as the 

 latter, the apices not sinuate; abdomen parallel, fully as wide as the 

 widest part of the elytra, the first two basal impressions fine and moder- 

 ate, the third obsolete, the fifth tergite much longer than the fourth. 

 Length 1.6 mm.; width 0.26 mm. California (San Francisco). 



To be known by its small size, parallel form, well developed 

 elytra and unusually long fifth tergite for the Sipaliids. 



The following is still another subgenus probably of the Sipalia 

 series : 



Subgenus Sipaliella nov. 



The body is here minute, perfectly parallel, with the head oval 

 and enlarged basally, the eyes very small and anterior, the carinae 

 wholly wanting, the elytra moderately short, the fifth tergite very 

 large and not moderate or shorter than the fourth as in Sipalia. 

 I cannot be certain of the structure of the middle tarsi in my single 

 example and assign the species to the neighborhood of Sipalia, 

 more on general f acies than any other consideration ; the hypomera 

 are similar. 



Sipalia (Sipaliella) filaria n. sp. Very slender, parallel, rather strongly 

 shining, moderately convex, compact, pale testaceous, the head scarcely 

 darker, the abdomen uniform in color; punctures fine, rather close-set, 

 the micro-reticulation of the abdomen large and polygonal; pubescence 

 short but erect and rather stiff; head slightly wider than long, sub- 

 triangular, with rounded sides, fully four-fifths as wide as the prothorax, 

 the eyes minute, anterior, flat, composed of about ten rather coarse facets; 

 antennae short, pale, the second joint much shorter than the first and 

 longer than the third, the latter only a third longer than wide and not 

 thinner, fourth strongly transverse, fourth to the tip rapidly and uni- 

 formly becoming very thick, the tenth joint more than twice as wide as 

 long, the last very stout, obtuse, much longer than the two preceding; 

 prothorax a third wider than long, parallel, with evenly and rather feebly 

 rounded sides, unimpressed; elytra transverse, with diverging sides, at 

 base scarcely, at apex fully, as wide as the prothorax, the suture four- 

 fifths as long as the latter; abdomen long, parallel, with straight sides, 

 equal in width to the elytra, the first tergite feebly impressed, the second 

 and third a little longer and not evidently impressed, the fourth still 



> 



"* 



LU 



LIBRARY 



T^ 



