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CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



equally prominent, the inner pair approximate at base and the outer sinuated 

 as in Tetraphleps. Ostiolar canal straight and prominent at apex, about as in 

 Tetraphleps. Whole surface opaque; superiorly clothed with fine pale pubes- 

 cence which shows an inclination to serial arrangement about the clavus. Legs 

 and antennas minutely pubescent. 



Color, dull piceous-black becoming obscure castaneous on the legs; elytra 

 dull castaneous-brown, paler on the embolium and outer margin of cuneus; 

 membrane slightly enfumed with an indistinct paler spot within the apex of 

 the cuneus. 



Described from three females, one taken by Mr. Walter 

 M. Giffard at Summit, Placer Co., Calif., August 24, 1916, 

 at an elevation of 7,000 feet; another taken by me on pine 

 trees on Mt. Tahquitz above Keen Camp, Riverside Co., 

 Calif., June 9, 1917, at an elevation of 7,000 feet; the third 

 taken by Mr. Ralph Hopping on Jeffrey pine at Monmouth, 

 Mono Co., Calif., May 9, 1919. The Summit specimen is 

 the insect recorded by me as M. obovatus Champ., in Proc. 

 Calif. Acad. Sciences, Ser. 4, VII, p. 262, 1917. 



Holotype, female, No. 797, Mus. Calif. Acad. Sci. 



Type locality, Summit, Placer Co., Calif. 



