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



moults the insect becomes more variegated and cinerons with 

 the vertex longer. 



Holotype (No. 379), male, from Niles, in collection of the 

 California Academy of Sciences. 



Allotype, female, from Niles, in collection of Mr. Giffard. 



Paratypes in both collections and in that of the author. 



345. Lihiirnia terminaUs Van D. Mr. Giffard took a 

 long series of this species at Seattle, Wash., July 7, 1917, 

 that differ in no respect from the types in my collection but 

 show much variation in color. My material is from Jamaica 

 and Crawford reports it from Nicaragua, but it has not been 

 reported from intermediate points. It lives on marsh grass 

 along the shore of Puget Sound. 



346. Liburnia lateralis Van D. Fallen Leaf Lake, August 

 21, 1916, one brachypterous example. 



347. Liburnia pcUucida (Fabr. ) Portland, Oreg., on Ra- 

 nunculus, July 3, 1917. 



348. Liburnia muiri, new species 



Aspect of kihnani but more closely related to lateralis; yellowish-tes- 

 taceous ; sides of the tergum partly black ; vertex, pronotum and scutellum 

 with a dorsal white vitta ; front broad as in detecta, the pale carinse inter- 

 ruptedly margined with fuscous. Length to tip of abdomen 3^ mm. 



Vertex oblong, a little longer than broad, gently rounded before, pas- 

 sage to the front rounded, the carinje distinct but not sharp over the apex; 

 basal areoles confused, the apical distinct but not attaining the tip of the 

 head as seen from above. Front about as broad as in detecta but very 

 differently shaped, but little narrowed between the eyes; the sides straight 

 and parallel or slightly approaching above. Pronotum as long as the 

 vertex in the macropterous form, a little shorter in the brachypterous ; 

 lateral carin£e broadly divergent, their abbreviated apex curved outward 

 but not obviously continued around behind the eyes. Mesonotum distinctly 

 carinate. Macropterous elytra reaching for one-half their length beyond 

 the abdomen, the brachypterous elliptical at apex and attaining the middle 

 of the fifth tergal segment. 



Apex of the male pygofer small and nearly round ; dorsal notch broad 

 and shallow, the ventral margin entire, regularly arcuated. Stiles broad, 

 blunt but hardly truncated at apex, divergent, lying parallel with the 

 lateral wall of the pygofer, their inner margins fringed with short stiff 

 ■hairs ; anal tube thickened below but without ventral process. Ovipositor 

 of the female much shorter than the pygofers. 



Color dull yellowish-testaceous. Dorsal line white, generally broadened 

 on the thorax and more slender on the tergum where it may become 

 obsolete ; front tinged with fulvous, the carinas white, interruptedly bor- 

 dered with fuscous ; clypeus black with thick white carins ; disk of the 

 metapleura, some marks on the pro- and mesopleurse, sides of the venter 

 and tergum black, the latter sometimes quite broadly black. Elytra faintly 

 fuliginous with concolorous nervures, the marginal white, the apical por- 



