tent ourselves with figuring only the one, which those readers 

 of this book who live in Missouri and south and west of that 

 state are likely to see. 



GENUS MEGATHYMUS RILET 



(1) Megathymv* yuccce (Boisduval & Leconte), Plate CL, 9 

 (The Yucca Skipper). 



The caterpillar of this species is a wood-borer, feeding in the 

 pith and on the underground roots of different species of Yucca. 

 The life history has been beautifully worked out by the late 

 Prof. C. V. Riley, who published a full account of his ob- 

 servations in his "Eighth Annual Report of the State Ento- 

 mologist of Missouri," pp. 169 el seq., and in the "Transactions 

 of the St. Louis Academy of Science, " Vol. Ill, pp. 323 et seq. 

 The student will do well to refer to these interesting papers. 

 The figure we give on the plate is that of a female specimen 

 bred by Professor Riley in Missouri and presented by him to 

 the late W. H. Edwards, whose collection is now the property 

 of the writer. 



223 



