1 8 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



dust, and the small white spot in front of the hindermost black blotch is very 

 distinct. Scutellum metallic violet. Abdomen metallic green with coppery 

 reflections and very distinct black incisures; the segments with more or less 

 white dust on their sides. Coxae and legs like those of the male, except that 

 the fore tarsi have no pads of minute hairs on their plantar surfaces, and that 

 the blackening of the tip of the hind femur is less extensive. Wings dis- 

 tinctly brown along the veins and towards the costal margin. 



Numerous specimens of both sexes taken in a salt marsh 

 along the road from Monterey to Del Monte, Calif., July 

 13th to 31st, 1896. I have also examined several male and 

 female specimens of what I take to be this species from 

 Lusk, Wyo. They were collected by Mr. W. A. Snow 

 during July, 1895. 



In living specimens the violet coloring of the male is very 

 brilliant and distinguishes it from the males of P. lamellatus 

 Loew and P. abbreviatus Loew. 



Paraclius Bigot. 



The species of this genus, which is rather closely allied 

 to Pelastoneurus, are mostly confined to the Southern States 

 and the West Indies, only one, P. claviculatus Loew, being 

 known to occur north of these regions. The species may 

 be distinguished as follows: — 



1. Antennae red 2 



Antennae black 4 



2. Fore coxae entirely red or yellow 3 



Fore coxae only tipped with yellow propinquus, sp. nov. 



3. First and second antennal joints black above. 



claviculatus Loew. 

 First and second antennal joints not infuscated above. 



filiferus Ald. 



4. Feet entirely black albonotatus Loew. 



Feet not entirely black 5 



5. Femora black pumilio Loew. 



Femora yellow, brown above arcuatus Loew. 



19. Paraclius propinquus, sp. nov. 



Plate I, Figs. 22-24. 



Male. Length 2.75 mm.; length of wing 2.5 mm. Palpi and face covered 

 with opaque gray dust, the former small, the latter rather narrow, of nearly 

 uniform width throughout and with a metallic green ground-color. Antennas 

 red ; third joint about as long as broad, bluntly pointed, blackened towards 



