July, 1900.] 



PSYCHE. 



83 



Figures of Kermes pubescens and K. somewhat in color and in the measure- 



kingii are given to show the relative dif- ments of their antennal segments, legs, 



ferences there are in the larva stages of etc. It is quite clear, as Mr. Pergande 



the northeastern species at least, and so pointed out to Prof. Cockerell, that the 



Younsf larva of A', kiiit 



•Ckll. 



far as described they represent all yet 

 found in North America. K. pubescens 

 seems to differ from all the other forms 

 and resemble much the genus Eriococais, 

 especially so in the shape of its spines ; 

 it looks much like Eriococcus euca/ypfi 

 Mask. ; pubescens has six rows, while 

 encalyptis body is thickly cow ertA, pubes- 

 cens caudal tubercles are very small, 

 very different from all other species. 

 The figure of K. kingii represents in 

 a general way all the other forms of 

 our Kermes larvae. In shape all are 

 oval or slightly elongate oval, differing 



Young larva of K. pubescens Boguei. 



Kermes in their larval stages are really 

 allied to the genus Eriococcus, but in 

 the adult stage they superficially re- 

 semble Lecanium. Something has been 

 said by me and others to the effect that 

 some of the species appear to be vivi- 

 parous or perhaps parthenogenetic, 

 but there may be some doubt about 

 this. We have not found any of the 

 winged $ forms. I have, however, met 

 with several just lately in the larvae 

 stage, not so large as the young $ lar- 

 vae, but was not successful in getting 

 mounts of any. 



Parasites. Prof. Bogue has found A'. 

 pubescens to be attached by a Chakid , 

 also Prof. Ehrhorn finds K. cockerelli 

 attacked by a chalcid sp. The depart- 



