44 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



pleura,' but yellowish at their tips, each with a prominent black bristle on the 

 outer side. Legs yellow, tarsi infuscated from the tip of the first joint. Fore 

 femora ciliated with black hairs on their lower surfaces; fore metatarsus with 

 three large black bristles on its plantar surface near the proximal end; sec- 

 ond joint distinctly incrassated; third joint with a spur-like curved bristle on 

 the under side near its proximal end. Wings, tegulae and halteres closely 

 resembling those of the male P. asellus. 



Female. Length 2.5 mm.; length of wing 2.5 mm. Face somewhat 

 broader than that of the male. Antennae short, first joint much like that of 

 the male in form and color; second and third joints dark brown, the former 

 with a short overlapping lobe, the latter pilose, as broad as long, with a blunt 

 point and distinctly dorsal arista. Arista rather robust, pubescent, longer 

 than the arista of the male. Fore femora eciliate, fore tarsi plain. Wings 

 with broad bases and distinct anal angles. Second and third abdominal 

 segments yellow, the dark posterior edges of the segments and the dark 

 median dorsal stripe more sharply defined than they are in the male 

 specimens. 



Four males and one female taken in sweepings near Mon- 

 terey, Calif., during July, 1896. 



The species may be readily distinguished from P. asellus 

 by the yellow of the first antennal joint and of the second 

 and third abdominal segments in both sexes. The modifi- 

 cation of the fore tarsi in the males of the two species is 

 remarkably similar. 



44. Parasyntormon hinnulus, sp. no v. 



Plate III, Figs. 72 and 73. 



Male. Length 2 mm.; length of wing 1.75 mm. Palpi and face black, 

 probably dusted with gray in well preserved specimens. Antennas black; 

 first joint rather small, broadened towards the tip, but without a large pro- 

 jection; second joint short, overlapping the third on the inside with a promi- 

 nent thumb-shaped lobe; third joint tapering, pointed, moderately pilose; 

 arista inserted distinctly before the tip, rather thick, short, pubescent, a little 

 over half the length of the third joint. Front dark, covered with gray dust. 

 Postocular cilia black above, white below. Thorax and scutellum dull metal- 

 lic green covered with brownish dust. Abdomen cupreous, darker on the 

 posterior segments; first segment dull brownish, second and third segments 

 yellow with blackish bronze posterior margins and mid-dorsal stripe; venter 

 yellow. Hypopygium similar to that of 5". asellus. Pleurse dull metallic 

 green covered with gray dust; metapleurae yellow. Fore and hind coxae yel- 

 low, the former with a few black hairs; middle coxae blackened. Legs yellow, 

 middle and hind tarsi and tips of hind tibiae infuscated; fore tarsi with three 

 last joints infuscated, first joint with three or four black bristles in a row near 

 its proximal end on the plantar surface; second joint distinctly incrassated. 



