48 PROCEEDINGS OF THE ACADEMY OF [Jan., 



Petri's, '99, poststernum of the mesothorax is the meron. On the other hand, 



his metathoracic poststernum is the katepimeron. 

 Brauer's, '82, Lowne's, '90-'92, and Hewitt's, '07, sternum of the dipteran 



metathorax is the mesothoracic meron. • 

 According to Packard, '98, the meron is the trochantinus, while Sharp, '95- 

 '99, designates it as a fold of the epimeron. 

 Sternum OS")— Sternum (Audouin, '24). 



The sternum of Comstock, '02, is the basi- and furci-sternum, except in the 

 cervical region where it is doubtless a detached portion of the prsesternum. 

 Comstock's, '05, sternum is the basi-sternum. 



Brauer's, '82, mesosternum is the mesothoracic katepisternal complex, the 

 laterale and the basisternum. On the other hand, his metasternum is 

 the mesothoracic meron. 

 Petri's, '99, antesternum of the mesothorax is likewise the katepisternal 

 complex, laterale and basisternum (as in the case with Lowne's, '90-'92, 

 "plastron," and Osten-Sacken's, '64, "sternopleura"); his metathoracic 

 antesternum, however, is the mesothoracic katepimeron. 

 Presternum (S'\) — Presternum (Comstock, '02). 



Meinert's, '67, prsesternum is probably the spinisternum. 

 Basisternum (S"n) — Basisternum (Crampton, '08). 

 Furcisternum (*S" 3 ) — -Furcisternum (Cramp ton, '08). 



= Comstock, '04, "antecoxal piece." 

 Spinisternum (S 4 ) — Spinisternum (Crampton, '08). 

 Cervicum (Cs) — Cervicum (Crampton, '08). 

 = Mikrothorax (Verhoeff, '02). 



Bibliography. 



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