1894. PROCEEDTXrr.<!! OF THE XATrOXAL MUSEUM. g09 



Described from three females and ten males, reared in iSTovemberfrom 

 a Syrpliid larva, found <»n an oak leaf at Arlington, Ya. Ty))es in the 

 U. S. National Museum. 



BOTHRIOTHORAX NOVEBOKACENSIS, new species. 



Female. — Length, 1.0 mm.; expanse, 3.8 mm.; greatest widtli of lore- 

 wing, 0.7 mm. Axilhe well separated at tips: punctation of head as 

 with preceding' species; same with that of mesonotum and scutellum. 

 Axilhe nearly smooth, scutellum faintly enuirgmate at tip, tegulae 

 smooth, eyes faintly hairy; marked depression at central hind border 

 of mesoscutum; abdomen faintly shagreened, meso])leura smooth, 

 antennte more slender than with ])re('eding- species; joint 1 of funicle 

 one-half length of pedicel; joints 2 to (i increasing- slightly in width 

 and length; club obliquely truncate, as long- as the two preceding funi- 

 cle Joints together. General color bright metallic blne-greeu; teguhe 

 light brown at tip, somewhat metallic iit base; antennal scape honey- 

 yellow at base, brown toward lip; Hagellum brown; all legs honeyyel- 

 low, front and middle femora brownish, hind tibia' black, all coxa? 

 metallic; wing veins brown. 



Described from two female specimens, one collected on hop at Eich- 

 field Springs, N. Y., by Mr. Theodor Pergande, October 7, 1887, close to a 

 Syrphid larva, and the other by Mr. Koebele at Boscawen, IST. H,, Octo- 

 ber, 1884. The measurements apply to the New York specimen; the 

 New Hampshire specimen is considerably larger. Types in the U. S. 

 National Museum. 



BOTHRIOTHORAX CALIFORNICUS, new species. 



Female. — Length, 1.75 mm.; expanse, 4.4 mm.; greatest width of 

 forewing, 0.8 mm. Axilhe well separated at apex, scutellum distinctly 

 emargiuate, eyes plainly hairy; head jnmctured as with preceding spe- 

 cies, facial depression slightly marked. Scutum and scutellum simi- 

 larly punctured, the jumctations on the side of the scutellum becoming 

 somewhat elongate, less so in the center, the punctations with sha- 

 greened center; punctures lacking at extreme tip of scutellum, but 

 shagreening i)ersistent. Axilhie nearly smooth, with one or more 

 faint depressions ; teguhe shagreened on basal half. Abdomen smooth, 

 except second segment, which is faintly shagreened. Occiput rather 

 strongly siiagreened, mesopleura smooth. Antennai short, stouter 

 than with preceding species; llagellum not more than one-third longer 

 than scape; first funicle joint one-half as long as jiedicel; joint 2 equal 

 to joint 1, joints .">, 4, 5, and (J becoming each a little longer and a little 

 wider than its ])receding joint. Club Hattened, obliquely truncate 

 nearly to base, and as h)ng as three preceding funicle joints together. 

 General color metallic bluish-green, teguhe also metallic, autente black 

 through(mt, all legs dark brown, hind tibia' metallic, middle and fore 

 tibia' lighter toward tip; all tarsi honey yellow; wing veins brown. 

 Proc. N. M. 94 39 



