On the N'aliie of Poison Rait tor Controlling Cane Grubs. 



EXPLANATION OF PLATE. 



Fiiz. 1. — Eggs of the " Gray-back'' Cane Beetle {Lepldiota albohirta, Water.) 

 a week after deposition (original). 



Fig. 2.— Larva of same, third inoult, about three-quarters grown (oi-iginal). 



Fig. 3. — Venter of anal segment of larva, showing disposition of setje or 



Ijristles, by means of which grulis of this l)eetle may be readily 



distinguished from those of other closely related scaraliseidae 



(magnified al:)Out six times ; original). 

 Fig. 4.- — Maudil)le or jaw of grul) (magnified four times ; original). 

 Fig. 5. — Abdominal spiracle aiid peritreme of grub (magnified seven'^een 



times; original). 

 Fig. <i. — Pupa of same, dorsal aspect (natural size ; original). 

 Fig. 7. — Abdominal segments of pupa, Xos. 7-8, illustrating the apjDearance 



of dorsal striae and anal horns (twice natural size ; oiiginal). 



Fig. 8. — Adult female of " Gray-back "' Beetle (natural size ; original). 



Fig. 9.^ — -Cane grvib injiu'v to roots aiid uudergroiuid portion of stalks of nine- 

 months' old"(jloru"' (half-natural size ; original). 



