56 THE GYPSY MOTH-- APPENDIX. 



of black points. Connexivum depressed, punctate, the outer 

 ivory white, callous and marked with t\vo black points at each 

 incisure of the segments ; the upper surface yellow, with the black 

 points more linear. Length to end of abdomen, 8i to 10i mm. 

 Width of pronotum, 4| to 6 mm. 



" Through the kindness of many friends, I have had the oppor- 

 tunity to examine specimens from the provinces of Quebec, Onta- 

 rio and Columbia, in British Americs, from nearly ail of the New 

 England States, "besides Illinois, Iowa, Michigan and Colorado. 

 The genital segment of the male is deeply excavated, and with 

 two short processes on the middle. The tergum is often bright 

 red, which color becomes brownish in more mature specimens. 

 The humeral angle is usually more or less black. In some speci- 

 mens there is a series of minute black dots each side of the venter, 

 and a few obscure spots distributed over the ventral surface." 



There are undoubtedly two annual broods of the insect 

 in this locality, and it seems probable that in especially 

 favorable seasons there may be three broods. 



The nymphs and imagoes of this species fraternize with 

 those of P. serieventriSj although this appears to be wholly 

 accidental, and depending upon food supply. I have found 

 P. placidus feeding upon the larvae of Euvanessa antiopa, 

 llt/phantria cunea, Or<jyi<i l( j ucostigma, 0. definita, CUsio- 

 <-(inipa americana (previously mentioned), C. disstria and a 

 small, undetermined saw-fly larva common on oaks. 



One must note with regret that this decidedly beneficial 

 little insect, which destroys so many injurious species, is 

 preyed upon by two spiders which are common occupants 

 of tent caterpillar webs, Epeira .v/r/.<: Hentz and Plridippus 

 mult iform is Em . * 



DENDROCORIS noiERALisf (Uhl.) (Plate 2, Fig. 8). 



This small Pentatornid was originally described by Prof. 

 P. E. Uhler (Bulletin United States -Geological Survey, 

 Art. XIV., page 399) under the genus Liotropis. Ac- 

 cording to Montandon, this generic name is preoccupied 

 (Uhler in litt.), and the insect should be placed in the 

 genus Dendrocoris. The specimens from which the original 



* These spiders were kindly identified by Mr. J. H. Emerton. 

 t Identified by Prof. P. R. Uhler. 



