Patton.] 392 [January 21, 
separating Tachyptera from Tachyies or such new genus from Larra. 
As a number of the species, both of Tachytes and Larra, given in 
this list are at present unknown to me I do not vouch for their 
validity, but in a subsequent paper hope to discuss both the zeneric 
and specific structural characters more fully. 
Tachytes labiatus. Sphex labiata Fabr., Ent. Syst, 11, 211, 52; 
Pompilus labiatus Fabr., Ent. Syst., Supp., 247, 9; Syst. Piez., 191, 
16; Tachytes labiatus Smith, Cat. H. B. M.,1v, 306; Tachytes 
murina Dahlb., Hym. Eur., 1, 132, 5 &. | 
Tachytes pepticus. Lyrops peptica Say, Bost. Journ., 1, 371, ¢ 2; 
Tachyies pepticus Smith, Cat. H. B. M., rv, 308. 
Tachytes argentipes Smith, Cat. H. B. M., rv, 306, °@. 
Tachytes insularis Cress., Proc. E. S. P., rv, 140, ¢ 9. 
Tachytes obscurus Cress., Tr. Am. Ent. Soc., rv, 217, 2. 
Tachytes texanus Cress., Tr. Am. Ent. Soc., rv, 217, ¢; Ta- 
chytes texanus Patton, Bull. U. S. Geol. Surv., v, 368, 3. 
Tachytes repandus. Liris repanda Fabr., Syst. Piez., 231 ; 
Tachytes 3-cincta Dahlb., Hym. Eur.,1, 125; Tachytes repanda 
Dahlb., Hym. Eur., 1, 470 and xxiii; Tachytes 3-cinctus Smith, 
Cat. TWoBs Meay. 306: 
Tachytes sericatus Cress., Tr. Am. Ent. Soc., Iv, 216, do @. 
Tachytes fulvipes. Larrada fulvipes Smith, Cat. H. B. M., 1v; 
288. 
Tachytes distinctus Smith, Cat. H. B. M., rv, 307, 2. Tachytes 
distinctus Cress., Tr. Am. Ent. Soc., rv, 215; ?Tachytes aurulenta 
Lepel., Hym., 11, 247. 
Tachytes cubensis Cress., Proc. E. 8S. P., rv, 189, ¢ @. 
Tachytes elongatus Cress., Tr. Am. Ent. Soc., Iv, 215, ¢. 
Tachytes validus Cress., Tr. Am. Ent. Soc., rv, 216, ¢ 2; 
Tachytes breviventris Cress., Tr. Am. Ent. Soc., Iv, 216, &. 
Tachytes crassus n. sp. 
Tachytes mandibularis n. sp. 
Tachytes harpax n. sp. 
Tachytes 3-cinctus. Liris 3-cincta Fabr., Syst. Piez., 229, 5. 
Tachytes aurulentus. Larra aurulenta Fabr., Syst. Piez., 220, 7; 
Lyrops aurulenta Say, Bost. Journ., 1, 371, 3 ; ?Tachytes aurulenta 
Lepel., Hym., 111, 247; ? Tachytes aurulentus Smith, Cat. H. B. M., 
Iv, 306 and 307. 
Tachytes dives Lepel., Hym., 111, 247, 8, °. 
