J 40 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Se*. 



with the antennae, rostrum and legs testaceous. Length 4 

 mm., width 1^ mm. 



Head longer than in campestris, longer than median length of pronotum 

 and equal to its width across eyes; vertex with a few coarse punctures an- 

 teriorly, smooth about the ocelli. Segment I of antennae not quite attaining 

 apex of head; II as long as head; III and IV subequal, each two-thirds of 

 second. Pronotum rugose as in campestris, the sides a little more sharply 

 carinate and subsinuate posteriorly, the surface depressed across disk behind 

 middle. Elytra narrower than in campestris, parallel, opaque, closely punc- 

 tured ; membrane long and narrow, considerably exceeding abdomen ; outer 

 veins distinct, others obsolete or practically so. Rostrum attaining middle of 

 hind coxae ; seg. I reaching almost to base of head. Orifices and canal as in 

 campestris, the metastethal carina sharp and a little curved; mesostethus 

 with a minute tubercle at base of intermediate coxae. Anterior femora con- 

 siderably thickened, fusiform, about twice thickness of intermediate. 



Color, a deep opaque piceous-black, becoming a little paler on costal base, 

 behind ocelli and along either side of tylus; antennae, rostrum and legs honey- 

 yellow or pale piceous. 



Described from one pair taken in the cool foggy coastal 

 belt of California, at Lagunitas, Marin Co., April 9, 1911, 

 by Dr. E. C. Van Dyke. 



Holotype, male, No. 792, allotype, female, No. 793, 

 Mus. Calif. Acad. Sci. 



Type locality, Lagunitas, Marin Co., Calif. 



5. Tetraphleps latipennis, new species 



Allied to aterrima; black, pronotum, the callosities ex- 

 cepted, and the elytra castaneous brown. Length A]/ 2 mm., 

 width 2 mm. 



Head as long as median length of pronotum ; vertex broad and convex 

 between the ocelli. Antennae a little shorter than head and pronotum along 

 median line; seg. I scarcely attaining apex of head; II as long as from tip of 

 head to ocelli; III and IV together rather longer than II, IV slightly ex- 

 ceeding III. Rostrum attaining anterior coxae; seg. II a little surpassing base 

 of head. Prosternum transversely wrinkled, connate with the collum, obtusely 

 angled between anterior coxae, its edge obscurely carinate; mesosternum 

 slightly carinate-produced between anterior coxae, sulcate posteriorly, smooth 

 with sides aciculate almost to anterior margin. Ostiolar canal straight, its 

 margins distinctly elevated to an acute apex. Pronotum broad, sides well 

 arcuated and slenderly carinate; collum broad and well defined, entirely 

 free from lateral carinas; region of callosities smooth, distinctly elevated; 

 collum and posterior lobe closely punctate. Scutellum roughened but scarcely 

 punctate, the usual median depression distinct. Elytra broad, costa rather 

 strongly expanded at base, nearly straight ; surface uniformly but moderately 

 polished, closely punctate; membrane exceeding abdomen by about a fourth 

 *ts length, the veins distinct, the outer abruptly curved and more prominent, 

 surface with irregular transverse wrinkles which become longitudinal at 



