above the stalk-like termination it becomes ovate, ex- 

 cept that just above the middle it is drawn inward 

 dorsally, and the upper border is turned slightly for- 

 ward. The lid which closes the case above the retired 

 animal is strengthened by about thirty parallel rods 

 which project beyond its free edge like the teeth of a 

 comb. This is a striking peculiarity. The height of the 

 case is 1-160 of an inch. 



3. Cothurnia longipes. This species is found in the 

 same situations as T. fimbrmta and on Polyzoa. It 

 differs from other species of its genus by having a long 

 foot-stalk uniting the animal to a conical knob at the 

 base of the capsule. The length of the capsule is 1-250 

 of an inch, of its stipe 1-210 of an inch, and the stalk 

 of the animal 1-600 of an inch. 



Preliminary Report on the Dragon Flies of Ohio, 

 BY D. S. Kellicott, Columbus. 



The report was a brief summary of what had been 

 done heretofore towards recording the natural history 

 of the Odonata of Ohio ; the insects which are vari- 

 ousW designated "dragonflies," "horse-stingers," 

 "horse-doctors," "snake-feeders," or "devils-darning- 

 needles." 



A collection was also shown containing nearly all 

 the species thus far known to have been captured in the 

 State. These were tabulated, showing; 1, hovv many 

 of each genus are in hand ; 2, how many have been at- 

 tributed to the region by authors ; 3, and comparing 

 in the same manner the species of the Philadelphia list 

 recently published by Philip P. Calvert. The totals for 

 the four columns were as follows : 



1, v58; 2, 95; ?,, 63; 4, 29. 



The writer urged members of the Academy to send 

 specimens and communicate facts of life histories and 

 habits from as many localities in the state as possible. 



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