80 GENERIC SYNOPSIS. 
Subfamily 2. Crabronides Westw. (Crabronide Leach.) 
ALYSON Jur. Pompritus p. Fabr. 1 sp. Al. spinosus Jur. Curtis, 584. 
Abdomen elongate-ovate ; collar narrowed; three submarginal cells, the second 
peduncled, first and second receiving a recurrent nerve ; metathorax spined and 
striated. 
GORYTES Latr. Arractus p. Jur. 2sp. Vespa mystacea Linn. Curtis, 524. 
Abdomen elongate-ovate; mandibles bidentate; four submarginal cells, the 
second narrowed at the base, sessile, and receiving two recurrent nerves; an- 
terior tarsi simple in both sexes. 
[HOPLISUS St. Farg. Goryres p. Shk. 1sp. H. 5-cinctus St. Farg. 
Antennz obtuse in both sexes; anterior tarsi@ ciliated. Pz. 72. 14.] 
[EUSPONGUS St. Farg. Goryresp. Shk. 2sp.  E, laticinctus St. Farg. 
Anterior tarsi 9 ciliated ; antenne ? thickened, acute at tip. | 
[LESTIPHORUS St. Farg. Gorytes p. Shk. 1 sp. Crab. bicinctus Rossi. 
Abdominal peduncle pear-shaped ; antennz @ filiform, ¢ pointed at tip, tenth joint 
concave ing. Curtis, 524. ] 
ARPACTUS Jur. Pomeitus p. Panz. 2sp. Ar. tumidus Pz. Pz. 81. 15. 
Three submarginal cells, second not peduncled, receiving two recurrent nerves ; 
antenne 9 as long as g. 
CRABRO Fabr. Spruex p. Linn. 42 sp. Sphex cribraria Linn. Curtis, 680. 
Antenne strongly elbowed ; face very broad; one marginal cell slightly appen- 
diculated, and one submarginal not confluent with the second discoidal; one 
recurrent nerve; mandibles slender, bifid at tip; max. palpi 6-, labial 
4-jointed. 
Obs. This genus has been greatly cut up by St. Fargeau. The following 
are such of his genera as have been found in this country, together with 
examples of each. 
[THYREOPUS St. Farg. Crasro p. Shk.  Sphex cribraria Linn, Pz. 15. 
18, 19.] 
[CROSSOCERUS St. Farg. Crasro p. Shk. Cr. scutatus Fabr. Pz. 15. 22. 
[THYREUS St. Farg. Crasro p. Shk. Cr. vewillatus Pz. Pz. 46. 5.] 
[CERATOCOLUS St. Farg. Crazro p. Shk.? C. Lindenius? Shk.] 
[SOLENIUS St. Farg. Craxsrop. Shk. Sphex vaga Linn. Pz. 46. 10.] 
([BLEPHARIPUS S¢t. Farg. Crasrop. Shk. Cr. dimidiatus Fabr. Pz. 43. 15.] 
[LINDENIUS St. Farg. Craxsrop. Shk.  Crabro albilabris Fabr. Pz. 15. 24.] 
[PHYSOSCELIS Sé. Farg. Cranro p. Shk. Crabro rufiventris. Pz. 72. 12.] 
RHOPALUM Kirby. Corynorus St. Farg. 3sp.  Crabro tibialis Fabr. 
Abdomen with a long knotted peduncle; marginal cell with a long terminal 
branch ; submarginal and discoidal cell as in Crabro; max. palpi 5-, labial 
3-jointed. Curtis, 656. 
STIGMUS Jurine. —— _ St. ater Jur. Jurine, pl. 9. 7. 
Antennz not elbowed ; two submarginal cells, first receiving the only recurrent 
nerve, which joins the cubital about the middle of the first submarginal cell ; 
second small; two discoidal cells; stigma very large; mandibles elongate, 
tridentate. 
SPILOMENA Shk, Cesta Shk. olim. 1 sp. Stig. troglodytes V.L. 
Stigma very large ; two submarginal cells, one recurrent nerye anastomosing with 
the first transverso-cubital. 
