222 THE CANADIAN ENTOMOLOGIST. 



Tubercles white anteriorly and black posteriorly, markings of head as 

 before. Band of eighth segment paler brown, except around base of 

 central tubercle. This last, short, rounded and bent backward. Fila- 

 ments white, compound, broad at the base, and dividing into about five 

 points. 



May 7th, mature larvae. Uniform reddish gray. Head brown in 

 front, except lower part white, each lobe surmounted by a yellowish 

 spot. Head bordered with dark brown behind. Dorsal stripe indistinct. 

 Tubercles inconspicuous. The dorsal horn of eighth segment is reduced 

 to little more than an acuminate ridge, with summit slightly if at all paler 

 than body colour. Head somewhat elevated : body much flattened. 

 The numerous filaments seem to originate from an extension of the skin 

 along the sides. Very slight black markings on anal segments. Began 

 spinning up May 17th. Two pupae. One of these is in a thin silken cocoon 

 partially covered with sand and leaves. It measures about three-quarters 

 of an inch in length and is pale red, the head and thoracic parts having a 

 greenish tint. No bloom. 



The second pupa is covered with a heavy bluish bloom, through 

 which the red of the abdominal parts shows faintly. Gave imago June 4th. 



This larva hatched so early that few trees had opened their buds. 

 We gave them a mixture of everything that seemed to be available, and in 

 each of three lots they selected plum. The larvae, however, did not do 

 well on plum. They ate it readily enough, and seemed to thrive, but 

 died off from time to time until, of some fifty hatched, only about four or 

 five made pupae. 



May 3rd a single wild larva, mature, was found under an apple tree 

 and fed to pupation upon apple. Hence, it may be safe to infer that 

 apple is the proper food-plant for this species. 



Clintonii has for two years past been the earliest of all our Catocalae 

 specimens, having been taken June 6th or 7th in each year. Previous to 

 that we had not collected. 

 Catocala m in id a, Edw. 



Food-plant, Gleditschia triacanthos (Honey locust). 



Eggs deposited June 23rd, 1900, in crevice of the bark, seventy or 

 more in a compact mass or cluster. Smooth, shining, about twice as long 

 as broad, rounded at the ends, colourless. 



Hatched April 21st, 1901. 



Buds were just beginning to expand on the honey-locust trees. 



