6 Harry Scott Smith 
Genus Coloptera Lepeletier _ 
Coloptera wrightii Cresson. 
1868. Coloptera wrightii Cresson, Transactions of the American En- 
tomological Society, i, p. 378. 
1903. Coloptera wrightii Melander, Psyche, x, p. 162. 3 
A single specimen of this odd wasp was taken at Pine Bluffs 
on August 27, 1893. 
Genus Sphex Linnaeus 
SYNOPSIS OF THE SPECIES 
Pronotum or mesonotum or both, more or less transversely striated or 
PIOSO ME oe oP cua «a's eis Settee oo acb eae ele gitic x hel eleeers otk eee ee 1 
Disk of thorax either smooth or Siacanck but not with complete 
CLANSVerse! SPIO... cy we cc River ocr. coe wee wag ane tome ee De eee 3 
1 Thorax ‘and “legs, ta part red 2, 2.0... sees la ches ee nas Sere ne 2 
1. Thorax and legs black; size large, 22-30 mm. long; pleura with 
silvery pubescence; prothorax comparatively long....procerus 
2. Head black; striae of metanotum becoming rugose laterally, 
cressoni 
2. Head ferruginous; striae of metanotum more complete lat- 
rallye iti NAG Ok oO een ie eras ae Oe ferruginosus 
3. Legs in part red, especially the anterior ones; head and thorax “ 
with. silvery pulseScences 2... \\s oO, taaces esses ates breviceps 
Gites” Black! = Henig aad cea nee ete as at ache hte SoD Sate ae 4 
4. Abdomen entirely black, or with a very little red; pleura 
with beautiful silvery spots; clypeus of male produced; 
metapleura finely rugulose.................. ee See abbreviatus 
4, Abdomen in} part iredss ois Gk iss aes os Mages ale ee 5 
5. Pleura uniform dull black in color, without silvery pubescent 
MATKINGS” hee al oie bere oreo eo oboe cSicip ne shotteteneiete eT lay eee ae 6 
5. Pleura with markings of silvery pubescence; wings hyaline or F 
Hearly SO <<. Fee 5S eis pred «sai aalt nas pt wig ts olan Anoop eee 
6. Wings black, violaceous; second segment of petiole usually $ 
black above (a5 ck cook Ave shes Obs neti ee ee nigricans 
6. Wings yellowish, usually darker apically; second segment | 
ar petiole sssualiyi ned “above li5 ikea see ae extremitatus q 
Sphex procerus (Dahlbom). 
1843. Ammophila procera Dahlbom, Hymenoptera Europaea, i, p. 15. 
1856. Ammophila gryphus F. Smith, Catalogue of Hymenoptera in 02 | 
British Museum, iv, p. 222. 
1903. Ammophila procera Melander, Psyche, x, p. 159. 
This large wasp is found quite plentifully throughout the en- 
; 
328 3 
