474 BULLETIN UNITED STATES GEOLOaiCAL SURVEY. [Tol.Y. 



nervure of the fore wing bent abruptly back just beyond the origin of 

 the first recurrent nervure ; basal lobe of the posterior wings extending 

 only to the middle of the submedial cell ; scopa of the posterior legs of the 

 female short, dense, and not conspicuously plumose. 



Synhalonia fulvitarsis. 



$ , Melissodes fulvitarsis Cress. , Proc. Acad. Nat, Sci. Phila. 1878, p. 196. 



9 , Length 12"^™. Black, the mandibles sometimes with a testaceous 

 spot near the tip, clypeus with tlie iDunctures distinct ; the pubescence 

 of the head black, a tuft on the vertex ochraceous, the thorax above 

 and the first segment of the abdomen clothed with ochraceous pubes- 

 cence, the second segment with a more or less distinct band of pale 

 pubescence, tip of the abdomen fuscous ; legs black, anterior tarsi pice- 

 ous towards the tip, the puljescence beneath fuscous, the pubescence on 

 the intermediate tibise externally tinged with fulvous, the intermediate 

 tarsi pale piceous, clothed with fulvous pubescence, posterior tibisB, ex- 

 cept at base, and the posterior tarsi testaceous and clothed with bright 

 fulvous pubescence. — Como, Wyoming j S. W. Williston. 



Synhalonia speciosa. 



2 , Melissodes speciosa Cress. , Proc. Acad. Nat. Sci. PMla. 1878, p. 198. 



Synhalonia prater. 



^ , Melissodes f rater Cress., Proc. Acad. Nat. Sci. PLila. 1878, p. 197. 



Synhalonia honesta. 



<? , Melissodes honesta Cress., Trans. Am. Ent. Soc. iv, p. 279. 



Synhalonia acerba. 



9 , Melissodes aceria Cress., Trans. Am. Ent. Soc. vii, p. 210. 

 This may be the $ of edwardsii. 

 Synhalonia edwardsh. 



$, Melissodes Edwardsii Cress., Proc. Acad. Nat. Sci. Phila. 1878, p. 195. 



Synhalonia intrudens. 



$ , Melissodes intrudens Cress., Trans. Am. Ent. Soc. vii, p. 225. 



Synhalonia albata. 



^ 9 , Melissodes albata Cress., Trans. Am. Ent. Soc. iv, p. 281. 



;8^. albata differs from the other species in many particulars and should 

 form a distinct section of the genus. The clypeus is little elevated, the 

 three ai^ical joints of the maxillary palpi form a subfusiform mass equal 

 in length to the third joint, the fifth and sixth joints being minute, the 

 mandibles in both sexes are entire at the tip, the tooth of the claws of 

 the four posterior tarsi in the female is straight and of moderate length, 

 the externo-medial nervure is not so abruptly bent in the female as in 

 the male, and the basal lobe of the posterior wings is as long as the sub- 

 medial cell. 



