HYMENOPTERA. CHRYSIDIDZH— CRABRONID-~. 79 
ALAPTUS Hal. —— 1sp. M. minimus * Wlk. 
“ Tarsi pentamerous; antennne g 10-jointed, filiform, 8-jointed 92, last joint 
enlarged.” Haliday MSS. 
Tribe 2. Tubulifera St. Farg. Hal., consisting of the single 
Family CHRYSIDIDZ Leach. 
HEDYCHRUM Latr. Omauus p. Panz. 12sp. Ch. aurata Linn. Curt. 38. 
Abdomen semicircular, or nearly hemispheric, convolyent ; scutellum not produced ; 
thorax broadly truncate in front. 
ELAMPUS Spinola. epycurum p. Panz. 1 sp. Ch. Panzeri Fab. Pz. 51.11. 
Abdomen convex, emarginate at the tip; scutellum terminating in a flat mucro ; 
thorax broadly truncate in front. 
CHRYSIS Linn. Sruex p. Scop. 23 sp. Ch. ignita Linn. Curt. 8. 
Abdomen oblong, semi-cylindrical, concayo-conyex, conyolvent ; scutellum not pro- 
duced ; thorax broad in front. 
? EUCHREUS Latr. Curysis p. Panz. 1 sp. Ch. 6-dentata Latr.? Pz. 51. 12. ? 
Abdomen subquadrate; scutellum not produced; thorax broadly truncate in 
front. 
CLEPTES Latr. Sruex p. Linn. 2sp. Sph. semiaurata Linn. Curt. 724. 
Collar narrow ; abdomen lanceolate-oyate, not convolvent, entire at the tip. 
Sect. 2. Acutrara Latr., Hal. (Hym. ovitithers St. Farg. H. 
monotrocha Hart. H. normalia Westw.) 
Subsect. 1. Jnsectivora Westw. (Fossores Latr. Lestica Hal.) 
Family 1. CRABRONIDZ Leach, Hal. 
Subfamily 1. Nyssonides Westw. (Larride p. Leach.) 
NYSSON Latr. Oxyzertusp. Fabr. 4sp. WN. interruptus Fabr. Panz. 72. 13. 
Mandibles toothless; eyes f not united ; antennz inserted below the centre of the 
face; three submarginal cells, the second peduncled, and receiving two recur- 
rent nerves. 
ASTATA Latr. Dimorrua Jur. 1 sp. Tiphia abdominalis Pz. Curt. 261. 
Thorax and abdomen ovate; second joint of lab. palpi securiform ; eyes united 
behind; three submarginal sessile cells, the second receiving two recurrent 
nerves. 
OXYBELUS Latr. Spuex p. Schiff. 6sp. Vespa uniglumis Linn. Curt. 480. 
Short ; one submarginal cell, receiving one recurrent nervure; the discoidal nerve 
rudimental ; antennez short; mandibles toothless; metathorax armed. 
TRYPOXYLON Latr. AriusJur. 3 sp. Sphex figulus Linn. Curt. 652. 
Eyes emarginate ; one marginal, and one distinct submarginal cell ; abdomen very 
long, narrow, peduncled ; mandibles toothless. 
PSEN Latr. Tryvroxyton p. Fabr. 2sp. Sphex atra Fabr. Panz. 72. 7. 
Clypeus quadrate ; abdomen long; first segment peduncled; antenne central, 
thickened at the tip; three submarginal sessile cells, the second and third re- 
ceiving a recurrent nerve; mandibles bidentate. 
MIMESA Shk. Psen p. Curtis. 2sp. Psen equestris Fabr. Curt. 25. 
Three submarginal cells, the second receiving both recurrent nerves, third cell 
larger than the second. 
* « The type of this genus is the smallest Hymenopterous insect known, being 
about half the size of Anagrus atomus.”  Haliday MSS. 
