Issued by C. G. LLOYD. 



PLATE 83. 



Fig. 2. 



Fig. 1. 



Fig. 1, enlarged. Fig. 2, specimens from Rev. J. M. Bates, Nebraska. 

 TYLOSTOMA POCULATUM. 



Fig. 3. 

 Fig. 3, specimens from C. V. Piper, Washington. 



TYLOSTOMA TUBERCULATUM. 



