192 Mr. Parkinson^ Defcriptkn of the Phafma dilatatum. 



end is {"unrounded by a fmall rim or ledge, and feems to be the part 

 which opens at the exclufion of the larva, fince it readily feparates 

 from the reft. On immerfmg fome of thefe ova in warm water, 

 and opening them, the included yolk, of a deep yellow colour, and 

 of the appearance of a tranfparent gum, was difcovered ; and this, 

 when burned, afforded the ufual fmell of animal fubftances, but in 

 fome it was accompanied by a flight degree of fragrance. It is per- 

 haps needlefs to obferve, that thefe mature ova clearly prove the 

 infect to be in its complete or ultimate ftate, and not in that of a 

 larva. 



Tab. 18. fig. 2. is an accurate reprefentation of the infect in 



its natural fize and colours. 

 Fig. 3. fhews the boat-fhaped organ on the lower fide of the 



abdomen. 

 Fig. 4. reprefents an ovum in its natural fize. 

 Fig. 5. the fame magnified. 



Dr. Shaw, who afiifted in the examination of the infect, has thus 

 given its fpecific character, viz. 



Phafma dilatatum^ thorace dilatato rhombeato pedibufque fpinofis, 

 abdom'me lanceolato, lateribus ciliato-fpinofis. 



XVI. A- 



