August, '19] FERRIS: MEALY-BUGS 295 



separable from citri but it must be admitted that some examples are 

 not. The form may be merely an extreme variant of citri or it may 

 be a race or strain — call it what you please. 



Mr. Smith and Mr. Armitage inform me that from field observations 

 they are convinced that this is not citri and Mr. Woglum states that 

 from a superficial examination only he too is inclined to agree with 

 this viewpoint. I have previously noted the species in my paper 

 on the California mealy-bugs but in view of its possible importance 

 and its close resemblance to citri more extended studies are desirable, 

 the description which I have given needing to be amplified. I shall 

 not here attempt such a study. 



Descriptions of Species 

 Pseudococcus pini (Kuwana) 



Fig. 15. Pseudococcus pini (Kuwana): left, anal lobe and penultimate cerarii; 

 right, ventral side of anal lobe. 



Habit. The original description of this species contains but httle 

 information concerning its appearance in life, nor, from the material 

 that I have examined can I add anything. Judging from the mor- 

 phology of the species, however, it will have much the appearance of 

 P. citri, but the marginal tassels will not be present anterior to the 

 abdomen. The species probably does not secrete a large ovisac. 

 Body contents reddish. 



Morphological Characteristics. With but five or six pairs of cerarii, these 

 on the last five or six segments of the abdomen. Each cerarius with two rather slen- 

 der, conical spines, with a very few pores and without auxiliary seta? except for a 

 few about tlie anal lobe pair. Spines of the anal lobe cerarii largest, the others becom- 

 ing progressively smaller anteriorly. Ventral side of the anal lobes normally with a 

 small but well defined, chitinized bar extending in from the base of the minor seta. 

 There is some variation in this character and in some specimens it appears not to be 

 developed. Spines of the dorsum rather few and small, their ba.ses rather stout, 

 their tips tending to be somewhat flagellate, those of the head longer and more slender 

 than the others. Ventral seta; longer and more slender than those of the dorsum. 



