178 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



12. Fucellia aestuum, new species 



Male : Very much like maritima, but the tibiae black and the hind femora 

 plain. Front .426 of head-width (one specimen), brown, very little paler 

 at front edge; bristles as in maritima; antennae black, third joint less than 

 twice the second, arista bare, enlarged for a third its length ; parafacials 

 and bucca gray, the former rather narrow and with a changeable spot 

 opposite antenna, the latter half the eye-height ; palpi dark yellow, the 

 apical third blackish ; proboscis black, small ; back of head only moder- 

 ately bulging. 



Thorax unicolorous dark gray above, a shade lighter on sides ; ant acr 

 three stout pairs, no small scattered hairs before the suture, and only 

 four to six behind it ; prealar distinct but less than half as long as the 

 bristle behind it; rest of thoracic characters as in maritima. 



Abdomen with thin brown, changeable pollen, giving a tessellated effect, 

 in some lights showing a broad median dark stripe ; bristles inconspicuous ; 

 fifth segment indistinctly marked off from the first of the hypopygium, 

 which is small and bears numerous bristles behind ; second of hypopyg- 

 ium small, subshining black, with only small hairs ; fifth sternite yellowish 

 brown, suberect, forming with its concolorous lateral lobes a raised rim 

 open behind, the central space hollow to some depth (probably not so in 

 all specimens, this is a single case) ; the lateral lobes bear only fine hair. 



Legs black ; front tibia with one bristle on front side ; middle tibia 

 with one on outer front, two or three on outer hind ; hind tibia with three 

 on hind, four on outer hind, and on outer front side with a row of about 

 8, smaller above ; hind basitarsus with spine below ; middle femur with a 

 few scattering bristles below on both front and hind edges, longer behind; 

 hind femur plain, its outer side bearing the usual row of bristles above, 

 while below it has a row of about 7, beginning before the middle. 



Wings subhyaline, crossveins not infuscated, costal spines and setules 

 small but visible. 



Female : Same as male except as to genital segments. The palpi being 

 red at base is a good character to separate these females from those of 

 fucorum, ariciiformis, antcnnata, and apparently liinci. 



Length 4 to 4^ mm. 



Fifty specimens, both sexes: 46 (including type) from 

 Ilwaco, Wash., July, 1917 (Melander) ; two Vancouver, B. C, 

 Aug. 8, 1917 (Melander) ; one Tokeland, Wash. (Doane), and 

 one Pender Island, B. C. (Aldrich). 



Type and paratypes in California Academy of Sciences ; sets 

 of paratypes in the United States National Museum, the Cana- 

 dian National Collection, in Professor Melander's collection, 

 and in that of the writer. 



13. Fucellia hinei, new species 

 (Fig. 10) 



Entirely black, slender, with globose head, apical half of wing anteriorly 

 with distinct but ill-defined brown tinge. 



Male: Front .486 of head width (average of two— .500 and .471); 

 f rentals 7, upper 3 inclined outwardly, lower 4 mesially; one large pair 



