89 



Cankerworrns were present in the early season in considerable 

 numbers and a considerable proportion of the injury was due to the 

 fall cankerworm. 



The San Jose scale has of course attracted no little attention and 

 its spread in the State has been marked by serious loss, but this 

 species will doubtless be mentioned in detail by our secretary, whose 

 duties have brought him into special connection with it. 



During the latter part of August and in September I found on a 

 species of Euphorbia, which occurs as a somewhat Common weed on 

 the universitj 7 campus, considerable numbers of the little capsid, 

 Eccritotarsiis elegans, in both larval and adult forms, and was there- 

 fore able to secure the different stages in the life historj^ of the species, 

 with the exception of the egg. 



It appears that the development is quite rapid, since the larvye of 

 different stages occur at the same time upon the same plants, and 

 these, when kept in confinement, moulted frequently and attained 

 their maturity in a short period of time. The species seems ordinarily 

 quite rare, but this rarity in collections is doubtless due to its limita- 

 tions in food plants, and perhaps also due to the limited period during 

 which it occurs each season. It appears to coincide with the develop- 

 ment of the blossoms in its host plant, and both young and adults 

 match the color of the buds and portions of the leaves so closely that 

 they are doubtless Avell protected by the mimicry. The young have 

 the distinct purple-red color which agrees perfectly with the unopened 

 buds, or, in some cases, with the parts of the leaves, the adults, with 

 their white markings, with the seed pods after the dropping of the 

 petals. 



At the same time and on the same host plant there were found large 

 numbers of one of the Coreid bugs, Corizus hyalinus, which in its 

 development, and especialty in the coloration and marking of the 

 larva?, shows a distinct adaptation to life upon this host. 



One other species of considerable interest observed for the first 

 time this year is a Fulgorid, which shows a rather anomalous habit of 

 living underground and feeding upon the roots of various plants. 

 This I have named Mynclus radiciis and described in a recent num- 

 ber of the Ohio Naturalist (Vol. IV, p. 42). It was first noticed in the 

 larval stage, occurring upon roots of Impatiens, nettles, and various 

 species of grasses. Within a few daj^s I secured by rearing several 

 of the adults and about the same time these were found also in the 

 ground, occurring in the cavities tenanted by the nymphs. The 

 nymphs are of a pale greenish color, the sutural bands of the abdo- 

 men appearing white, and there is a prominent cottony tuft secreted 

 on the posterior segment, which, when fully developed, extends one- 

 third of the length of the abdomen beyond its apex. Two nymphal 

 stages were observed, the younger having a length of 2.G mm and a 

 width of l mm . The mature nymph or pupa, as determined by rearing, 



