ART. 1 AMERICAN "WASPS OF THE GENUS SCELIPHEON PORTEE O 



gave spirifex as an " exemple " of the genus Pelopoeus, and by 

 opinion 11 of the International Commission of Zoological Nomencla- 

 ture these examples have been given the value of type designations. 



In 1897, however, Bingham designated the same sj^ecies, sfinfex 

 Linnaeus, as the type of the genus Sceliphron. These two genera, 

 now" having a common genotype, become synonymous, and Pelopoeus^ 

 described a year later than Sceliphron^ must fall as synonym. 



Kohl's revision placed the entire subfamily under the genus 

 Sceliphron., Ghalyhion taking subgeneric rank, along with a group 

 called Hemichalyhion. To the writer the group of species ordinarily 

 placed under SceliphroTi (the black and yellow forms, with the long 

 petiole) are sufficiently distinct from the other forms in the sub- 

 family to merit generic rank, and they are so placed here. 



KEY TO AMERICAN SPECIES OF SCELIPHKON KLUG 



1. Tegulae and scape of antenna black fasciatum (Lepeletier). 



Tegulae and at least part of scape of antenna yellow 2. 



2. Abdominal segments bordered with j'ellow 3. 



Abdominal segments except first and rarely the second entirely black 4. 



3. Yellow border of abdominal segments wide lucae (Saussure). 



Yellow border of abdominal segments narrow jamaicensis (Fabricius). 



4. Propodeum definitely marked off below from metathorax by a deep groove. 



fistulare (Dahlbom). 

 Propodeum not definitely marked off below from metathorax 5. 



5. Hind legs with the basal portion of the tibiae and the greater portion 



of the tarsi yellow caementarium (Drury). 



Hind legs almost entirely black 6. 



6. Females figulum (Dahlbom) or assimile (Dahlbom). 



Males 7. 



7. Clypeus with long, slender teeth figulura (Dahlbom). 



Clypeus with shorfr teeth, of the usual form assimile (Dahlbom). 



SCELIPHRON CAEMENTARIUM (Drury) 



Sphex caementaria Drury, 1770, lUustr. Nat. Hist., vol. 1, p. 105, female. 



male. 

 Sphex flavomaculata DeGeer, 1773, Mem. hist. Insect., vol. 3, p. 588, no. 4. 

 Sphex lunata Fabricius, 1775, Syst. Entom., p. 347. 

 Sphex flavipes Fabricius, 1781, Spec. Insect, p. 444. 

 Sphex flavipunctata Christ, 1791, Naturg. d. Insect., p. 301. 

 Si)hex afjinis Fabricius, 1793, Ent. Syst., vol. 2, p. 203, no. 21. 

 Pelopoeus caementarius Westwood, Drury, 1837. Illustr. Nat. Hist., ed. 2, 



vol. 1, p. 99. 

 Pelopoeus architectus (King) Lepeletier, 1845, Hist. nat. Insect. Hymen., vol. 



3, p. 313, female. 

 Pelopoeus servillei Lepeletier, 1845, Hist. nat. Insect. Hymen., vol. 3, p. 313, 



female. 

 Pelopoeus solieri Lepeletier, 1845, Hist. nat. Insect. Hymen., vol. 3, p. 318, no. 



18, female. 

 Pelopoeus canadensis Smith, 1856, Cat, Hymen, Brit. Mus., vol. 4, p. 233. 



male. 

 Pelopoeus nigriventris Costa, (1862) 1864, Ann. Mus. Zool. NaiJoli, vol. 2, 



p. 60. 



