148 PROC. ENT. SOC. WASH., VOL. 21, NO. 6, JUNE, 1919 



1903 Klapalek. Genitalsegmente und Anhaenge bei Trichopteren. Bull, 

 internal. Acad. Sci. Boheme, 8, p. i. 



1897 Konow. Systematik der Hymenopteren. Ent. Nachr., 1897, p. 148. 



1913 MacGillivray. . Immature Stages of Tenthredinidae. 44 Ann. Rpt. 

 Ent. Soc. Ontario, p. 54. 



1918 Newell. Comparative Morphology of Genitalia of Insects. Ann. Ent. 

 Soc. America, u, p. 109. 



1912 Rohwer. Notes on Sawflies: Proc. U. S. Nat. Mus., 43, p. 205. 



1915 Rohwer. Remarkable Genus of Cephidae. Proc. Ent. Soc. Washing- 

 ton, 17, p. 114. 



1917 Rohwer and Cushman. Idiogastra, New Suborder of Hymenoptera. 

 Ibid., 19, p. 89. 



ABBREVIATIONS. 



a Location of anal opening. 



b Process of basal ring (gonocondyle). 



c Cerci. 



dg Dorsomedian caudal groove. 



eg Harpes, or distal segments of the genital forceps, also termed cochlearia. 



ep Epiproct, or tergite located above anal opening, regardless of segment 



it represents, or number of segments composing it. 

 eu Eupenes, or parts of true penis, 

 gb Gonostipes, or basal segment of genital forceps (incorrectly called 



stipes; . 

 gg Gonocardo, or basal ring of copulatory apparatus (incorrectly called 



cardo). 



gl Copulatory ossicles probably homologous with sagittae of higher Hy- 

 menoptera. 



gm Gonomaculae, or sensory areas, 

 h Hernitergite. 

 ha Hypandrium, or sternite located below male genitalia, regardless of 



segment to which it belongs. 

 hy Hypoproct, or sternite below anal opening, regardless of segment it 



represents, or number of primitive segments composing it. 

 Ig Lateral caudal grooves, 

 mp Median plate. 



p Male genitalia, genital or copulatory apparatus ("copulatoria"). 

 pa Parapenes or parapenis plates, also called praeputium and manubria. 

 pal Probably the volsellae of higher Hymenoptera, (also incorrectly called 



laciniae). 



par Paraprocts, or plates on either side of anus, 

 pc Postcornus, or caudal horn above anal opening in many wood-boring 



forms. 



pea Postcalli, or Callus-like structures above "anal prolegs." 

 pm Parameres, or structures on either side of true penis. 

 po Puppis, or caudal prolongation of hypandrium. 

 pp Postpedcs, or "anal prolegs." 



