NO. 1930. DESCRIPTIONS OF NEW SAW FLIES— ROHWER. 211 



The following species belong to this genus : ferox (Smith), moormna 

 (Cameron), pacifica (Smith), ruficornis (Cameron), sturmi (Klug), 

 and venusta (Konow) . 



Eriocampa major Cameron and E. punctata Cameron I have not 

 seen. Konow places them in Encarsioneura. If he is correct, they 

 should be added to the above list. 



I have examined the types of MacropTiya flavipes Smith and Siohla 

 hicolor and find that they do not belong to Siohla. 



Tenthredo incerta Cameron has been referred to Siohla, but belongs 

 to Xenapates Kirby. 



Genus RHOGOGASTER Konow. 



RHOGOGASTER TRUNCATUS, new species. 



Similar to Rhogogaster laterarius (Cresson), but that species has the 

 hind coxae black; the base of the wings and venation basally yellow- 

 ish; and the sheath rounded below. Rhogogaster addendus (Cresson) 

 has the stigma tapering apically and is otherwise different. 



Female. — Length 9 mm. Nasal margins of eyes strongly curved, 

 reniform; labrum truncate; clypeus squarely emarginate, lobe trun- 

 cate; antennal and supraclypeal fovese confluent; antennal and posto- 

 cellar furrows distinct; postocellar area transverse; third antennal 

 joint about one-third longer than fourth; stigma truncate; sheath 

 parallel sided, truncate apically. Black; clypeus, labrum, mandibles 

 except piceous apices, face below antennse, inner orbits (slightly inter- 

 rupted before top of eye) and extending to occiput, curving inwardly, 

 most of posterior orbits, most of pronotum, tegulae, two lines on 

 scutum, scutellum, metascutellum, large spot on mesepisternum, 

 spot on mesosternum, mesepimeron, metapleurae, sides and ventral 

 aspect of dorsal segments, and apices of ventral segments yellow; 

 legs yellow; with the following parts black: coxsb aboA^e, four anterior 

 tibiae and tarsi above, interrupted line on posterior femora above, 

 posterior tibiae above and posterior tarsi. Wings hyaline, faintly 

 dusky, iridescent; venation black, except base of stigma, which is 

 yellow. 



Blue Mountains, Washington. One female collected July, 1896, 

 by C. V. Piper. 



Type.— Cat. No. 14298, U.S.N.M. 



RHOGOGASTER PITOHATUS, new species. 



Differs from truncatus in having the sheath straight above and 

 broadly rounded below. 



Female. — Length 9 mm. 



Easton, Washington; Santa Cruz Mountains, California; Alameda, 

 California; Oregon (Koeble); Reno, Nevada (Wickham). 



Type.— C&t. 14299, U.S.N.M. 



