116 PROCEEDINGS OF THE NATIONAL MUSEUM vol.68 



Biologij. — Reared from ^all of Disholcaspis truckeensis (Ash- 

 mead) on Quercus chrysoJepis. Emerged April to June from galls 

 collected the fall before. 



Ilahitat. — Type locality, Idyllwild, Calif. Paratype localities: 

 Camp Bald}^ and Butte County (Big Bar Station on Western 

 Pacific), Calif.; and Canyonville, Oreg. Determined as this species 

 the Museum has two from Kern County, Calif., which were reared 

 April 20, 1893. 



EUCEROPTRES MARITIMUS, new species 



Female. — Black, antenna beyond scape and legs beyond tro- 

 chanters yellowish, tibiae and tarsi darker. Antennae 12-seg- 

 mented, filiform, stout, lengths as (scape) 22 (width 9): 8 (7): 21 

 (;7.5) : 21: 18: 17: 16: 18: 10: 9: 8: 20 (6.5), the last in some speci- 

 mens showing a faint trace of a transverse furrow dividing it 

 into two parts with lengths as 7 is to 13. Mesoscutum with sharp 

 and distinct transverse' ridges. Areolet reaching one-tenth to 

 one-seventh way to basal, cubitus reaching basal at its lower end. 

 Using width of head as a base the length of mesonotum ratio is 

 1.1, antenna 1.9, wdng 2.9, ovipositor 2.0. 



Range in length, 2.9-4.0 mm. Average of 13 specimens, 3.7 mm. 



Male. — ^Antennae stout, 16-segmented, third excavated and equal 

 to fourth, tapering to tip from about middle of flagellum. Lengths 

 of tergites along dorsal curvature as (petiole) 5:60:33:10:3:6:20, 

 the last with coarse setigerous punctures dorsally. Antennal ratio 

 2.25. Range in length 3.3-3.9 mm. Average of 10 specimens 3.6 mm. 



Type.— C^i. No. 27229, U.S.N.M. Type female, allotype, 1 male 

 and 4 female paratypes. Paratypes in American Museum, Field 

 and Stanford. 



Biology. — Two females and two males (including type and allo- 

 type) bred from a large woody gall of CalUrhytis suttoni (Bassett) 

 collected on Q. agrifolia on University of California campus by Mrs. 

 G. D. Louderback, JNIarch 11, 1912. The guests emerged April 20. 

 The paratype series also includes two males found among the Bassett 

 cotypes of C aHlirhytis suttoni (Bassett) which was described from 

 Oakland, and nine reared from galls determined as (- aUirhytis sut- 

 toni (Bassett) collected at Montecito, May 1, 1918, and sent in under 

 Hopkins No. 15605^^ The guests emerged May 13, June 8 and 17, 

 1918. 



MYRTOPSEN MIMOSAE. new species 



FeTiidle. — Brown, thorax and abdomen nearly black. Head and 

 thorax covered with white pubescence and from above wedge-shaped. 

 Head granulate, from above transverse, broader than thorax, cheeks 

 not enlarged behind eyes, occiput concave with oblique striae on 



