Rep. U. S. Dep. Ag. — Report of the U. S. Department of Agriculture. 



Rep. U. S. Ent. Com. — Report of the U. S. Entomological Commission. 



Rev. Chil. Hist. Nat. — Revista Chilena de Historia natural. 



Rev. Ent. Fr. — Revue Entomologique de France. 



Rev. & Mag. Hist. Nat. — Revue & Magazin d" Histoire Naturelle. 



Rev. Mus. Paul. — Revista do Museu Paulista. 



Rev. Zool. — Revue Zoologique. 



R«iv. Pat. Veg. — Rivista di Patologia \'egetale. 



Scale Ins. Less. Antil. — Scale Insects of the Lesser Antilles (Lefroy). 



Scale Ins. Trin. — The Scale Insects of Trinidad. 



Scale Ins. Lac. — Scale Insects that produce Lac. (Froggatt). 1900. 



Schjidl. Gart. Ins. — Naturgeschichte der Schadlichen Garten Insecten. 

 (Bouche). 1833. 



Scien. Amer. — The Scientific American. 



s. g. — subgenus. 



Sitzb. K. Bohm. Ges. Wiss. — Sitzungsberichte der K. Bohmisch Gesells- 

 chaft der Wissenschaften. 



Sitz. Akad. Wiss. Wien. — Sitzungsberichte der Akademie der Wissen- 

 schaften, Wien. 



Soc. d'Acclim. — Societe Imperiale d"Acclimatation. 



Spec. Ins. — Species Insectorum. (Fabricius). 



s. sp. — sub-species. 



St. Nat. Hist. — The Standard Natural History. 



Stett. Ent. Zeit. — Stettiner Entomologische Zeitung. 



Studi bot. sug. Agr. — Studi botanici sugli Agrumi. 



Studii sul. Cocc. — Studii sulle Cocciniglie. (Targioni Tozzetti). 1S67. 



Symb. Phys. — Symbolae Physicas. 



Synop. Gen. Br. Ins. — Synopsis of the Genera of British Insects. 

 (Westwood). 



Syst. Antl.— Systema Antliatorum. (Fabricius). 



Syst. Ent. — Systema Entomologis. (Fabricius). 



Syst. Nat. — Systema Naturae. (Linnaeus). 



Syst. Rhyng. — Systema Rhyngotorum. (Fabricius). 



Targ. Catalogue. — Coccidarum Catalogus. (Targioni Tozzetti). Feb. 1S69. 



The Entom. — The Entomologist. 



The Ent. Student. — The Entomological Student. 



Tijds. voor Entom. — Tijdschrift voor Entomologie. 



Traite phys. de la Coch. — Traite physique de la Cochenille. (Richter). 



T r. Am. Ent. Soc. — Transactions of the Entomological Society. 

 (Philadelphia). 



Tr. Ent. Soc. Lond. — Transactions of the Entomological Society of 

 London. 



Tr. Ent. Soc. N. S. W. — Transactions of the Entomological Society of 

 New South Wales. 



Tr. la. Hor. Soc. — Transactions of the Iowa Horticultural Society. 



Tr. Linn. Soc. Lond. — Transactions of the Linnaean Society of London. 



