14 
Formicida: (including allied families). 
G. L. Mayr. — Die Foriniciden der Yereinigten Staaten von Nordamerika. 
<Yerh. zool.-bot. Ges. in Wien, 1886. 
MUTILLIDaE. 
Ch. A. Blake. — Synopsis of the Mutillidse of North America. <Trans. 
Amer. Entom. Soc., Yol. Ill, 1870-71, pp. 217-265; Additions and 
Corrections, Yol. IY, 1872-73, pp. 71-76. 
Ch. A. Blake. — Catalogue of the Mutillidse of North America, with 
descriptions of new species. <Trans. Amer. Entom. Soc., Yol. 
VII, 1878-79, pp. 243-254. 
Ch. A. Blake. — Monograph of the Mutillidse of North America. 
<Trans. Amer. Entom. Soc., Yol. XIII, 1886, pp. 179-286. 
This monograph supersedes the synopsis by the same author. 
SCOLILELE. 
H. de Saussure & J. Sichel. — Catalogus specierum generis Scolia, 
Geneve, 1864. 
sapygida:. 
E. T. Cresson. — [Synoptic table of the North American species of 
Sapyga.] <Traus. Amer. Ent. Soc., Yol. VIII, 1880, pp. xx-xxi. 
POMPILID^E. 
E. T. Cresson. — Notes on the Pompilidie of North America, with de- 
scriptions of new species. <Trans. Amer. Ent. Soc., Yol. I, 1867, 
pp. 85-150. 
spheciDaE. 
W. II. Patton. — Some characters useful in the study of Sphecida?. 
<Proc. Boston Soc. Nat. Hist., Yol. XX, 1880, pp. 378-385. 
Critical notes on genera and species. 
LARRIDaE. 
A. S. Packard, Jr. — Revision of the Fossorial Hymenoptera of North 
America. I. Crabronidse and Nyssonidse. <Proc. Entom. Soc. 
Phil., Yol. YI, 1866, pp. 39-114 and 353-444. 
This work includes revisions of the following families: Larridae, Bembecidae, 
Philanthidae, Mimesidae, Mellinidae, Pemphredonidae, and Crabronidae. 
W. H. Patton. — List of North American Larridie. <Proc. Boston 
Soc. Nat. Hist., Yol. XX, 1880, pp. 385-397. 
Table of genera ; list of and notes on species. 
BEMBECIDAE. 
A. S. Packard, Jr. — [See work cited under Larridse.] 
W. H. Patton. — The American Bembecidm: Tribe Stizini. <Bull. 
U. S. Geolog. and Geogr. Survey, Yol. Y, No. 3, 1879, pp. 341-347. 
