XXXI, '2O] ENTOMOLOGICAL NEWS 22$ 



from the slightly rougher lateral areas by a margined sulcus which begins 

 at the basal angle and follows the basal margin for about one-fifth the 

 width of an elytron, then, turning at nearly a right angle crosses the 

 prothorax diagonally with a slightly sinuate course to its indexed tip, 

 where it dies out before reaching the apical margin; parallel to this sulcus 

 and on the lateral margin of the disc is a broad shallow groove which at 

 its basal end forms a broad foveate depression, is constricted at its middle, 

 and broadens again at its shallow apical end; lateral area narrowest at 

 base, widening to apex and divided at basal third by a broad foveate 

 depression which is not a distinct groove as in other species of the genus 

 examined by me; apical portion of lateral area has about eight setigerous 

 punctures irregularly placed, the included setae reddish yellow and de- 

 pressed; the basal portion of this lateral area is moderately tuberculate 

 and has about six setigerous punctures; thoracic lateral margin bordered 

 with six to eight black setae unequally spaced. 



Elytra smooth, shining, slightly wider than thorax, about as wide as 

 long, sides slightly arcuate, distinctly rounded posteriorly; first stria 

 from the elytral suture reaching three-fourths of length of elytra, with 

 two setae at basal end, none at tip; second stria nearly reaching apex, 

 two setae at base and five along apical end; third stria not quite reaching 

 apex, with an increasing number of setae from base to tip; subhumeral 

 stria not quite reaching apex, with fairly evenly spaced hairs throughout 

 its length; interspaces and disc smooth, shining; a row of setae on apical 

 margin. 



Pygidium and propygidium smooth, shining, moderately, evenly punc- 

 tured, each puncture bearing a subulate seta. 



Prosternum rugose, flattened, margined area on caudal end reaching to 

 one-half its length, margin sinuate between the coxae, beyond arcuately 

 convergent and meeting, completely enclosing the cephalic end of mar- 

 gined area which is smooth and shining. 



Legs smooth, shining, sparsely punctured, punctures with setae, hind 

 tibia not much wider than femur. 



Meso- and metathoracic segments and abdomen smooth, shining with- 

 out punctures. Length 1.5 mm. 



Described from four examples; type in my own collection, 

 from Mill Valley, Marin County, California; paratypes in 

 the collection of Dr. E. C. Van Dyke, who kindly loaned 

 them to me for comparison. 



My specimen was taken from the nest of a small grey ant 

 while those of Dr. Van Dyke came from the nest of a much 

 larger species. 



(To be Continued) 



