Ai:r. 9 DIGGER WASPS OF GENUS PODALONIA— FEKISTALD 9 



family into tribes. To harmonize this paper with the other,^ it is 

 only necessary to change the title of the key on page 308 of that 

 paper ^ to read: Analytical key to tribes. This key slightly modified , 

 is given below. 



ANALYTICAL KEY TO TRIBES 



1. Second cubital cell receiving only the first recurrent vein; the second recur- 



rent vein received by the third cubital cell. (Both recurrent veins are received 



by the first cubital cell in a few extra-limital forms) 2 



Second cubital cell receiving both recurrent veins, or the second recurrent vein 

 is interstitial with the second transverse cubital. Sometimes the first recur- 

 rent is interstitial with the first transverse cubital, or received by the first 

 cubital cell 3 



2. Antennae inserted on the middle of the face; claws with one to six teeth 



beneath; tibiae spinous; tarsal comb present in female (except in Isodontia). 



Chlorionini (Sphecinae of Authors) 

 Antennae inserted far below the middle of the face; claws simple, either with- 

 out teeth or with only one small tooth near the middle; tibiae not spinous: 

 tarsal comb in female, absent Podiini 



3. Claws simple, without teeth (teeth present in some extralimital forms) ; tibiae 



more or less spinous; tarsal comb present in female; abdomen more or less 

 elongate; petiole of one, or two segments; cubital vein of hind wing usually 

 originating beyond the transverse median vein. 



Sphecini (Ammophilinae of Authors) 



Claws with a single tooth beneath, sometimes very minute; rarely without a 



tooth; tarsal comb in female absent; petiole of one segment; cubital vein of 



hind wing interstitial with transverse median vein or nearly so 4 



4. Antennae inserted on middle of face; metathorax with a large U-shaped area 



above; mesopleura not longer than the height of the thorax Sceliphronini 



Antennae inserted far below the middle of the face, on, or just above an imag- 

 inary line drawn between bases of the eyes; metathorax without a large 

 U-shaped area above; mesopleura much longer than the height of the thorax. 



Podiini 

 In the tribe Sphecini seven genera besides Sphexh.?Lve atone time and 

 another been proposed, namely: Ammophila Kirby, 1789; Miscus Ju- 

 rine, 1807; Psammophila Dahlbom, 1842; Coloptera Lepeletier, 1845; 

 Podalonia Spinola, 1853; Parapsammophila Taschenberg, 1869; Ere- 

 mochares Gribodo, 1882; and Ceratospliex Rohwer (as a subgenus), 

 1921. AmmopMla, as has already been shown, ^ can not hold, being 

 a synonym of Sphex'^ as the genotype of both genera is sahulosa 

 Linnaeus. Miscus appears to have been established solely on the 

 basis of the presence of a petiolated third cubital cell. Jurine says: 

 "Lorsque je remarqui pour la premiere fois la figure de la troisieme 

 cellule cubitale des ailes de ces insectes, je presumai que c'etait une 

 anomalie dependante de la petitesse de ces SpJiex dont je ne devais 

 par tenir compte, mais I'ayant vue dans quatre individus, dont deux 

 sont indigenes, j'ai cru devoir placer ces hymenopteres dans un genre 

 nouveau." 



2 Proc. U. S. Nat. Mus., vol. 31, p. 295, 1906. 



3 Proc. U. S. Nat. Mus., vol. 31, p. 292-295, 1906. 



< Opinion 32 rendered by the International Commission on Zoological Nomenclature, Smithsoninn Pub. 

 lication 2013, 1911. 



30335—27 2 



