102 THE CANADIAN ENTOMOLOGIST. 



substituted, and for an ocellus which had no pupil, we might put a small 

 figure below the line, thus ,. Two or more ocelli joined would be 

 bracketed together, so (12), and a continuous band would consequently 

 be represented by all bracketed together, thus (1234567). Up. s. and 

 und. s. might be used to indicate the upper and under sides respectively ; 

 and in the case of asymmetrical specimens (which are rather frequent in 

 some species) the left and right sides would require sparate formulae. 



To give examples, the figures of C. tihleri on Mr. Edwards's plate 

 would have the following formulae : — 



Fig. I, up. s. P. 0O3O000 S. 0000000. 



Fig. 2, und. s. P. 0O3O000 S. 0000000. 



Fig. 3, up. s. P. o,345oO S. 0234560. 



Fig. 4, und. s. P. 0034560 S. 0234560. 



Fig. 5, up. s. P. 0O3O56O S. oop^fp. 



Fig. 6, up. s. P. 00340(^0 S. o-,,oo,^o. 



This looks complicated, but the method is really simple and easy to 

 understand, and as short as any which exactly defines the character of 

 the variation. 



HOW TO TAKE THE OIL OR GREASE OUT OF SPECIMENS 



OF NATURAL HISTORY. 



BY PH. FISHER. 



When a specimen has become oily (Lepidoptera, Coleoptera, Orthop- 

 tera, etc.,) use a bottle with a neck wide enough to let the specimen slip 

 through easily, pin and all. Put in this bottle enough common naphtha 

 to fully cover the insect, and introduce it into the fluid. Leave it in the 

 bottle from 10-12 hours. Then take it out, and lay it on some blotting 

 paper, where it will soon dry. If not yet clean, introduce in fresh naphtha 

 once more. This treatment will not injure the insects in the least ; they 

 will come out brand new. Before publishing this, I have tried it on the 

 most delicate Lepidoptera and Coleoptera, with the best results. If the 

 body only is oily, break it off gendy, and treat in same way. 



