THE CANADIAN ENTOMOLOGIST 87 



end of the abdomen. It is, perhaps, after all, not so surprising that 

 they have not been observed for they are quite small and difficult 

 to find among the many pores, spines and cicatrices, even in well 

 stained preparations, but that they are really spiracles has been 

 clearly demonstrated for it is possible to see the tracheae proceed- 

 ing from them. 



Three other species belonging to the Monophlebinas are at 

 hand, these including Paleococcus pluchece (Ckll.), Drosicha bur- 

 meisteri (Westw.), (det. K.uwana) and Drosicha corpulenta (Ku- 

 Avana), and in none of these have abdominal spiracles been recorded. 

 My single specimen of Paleococcus pluchece (Ckll.) shows at least 

 one pair but is in too poor condition to decide whether or not there 

 are more. Both the species of Drosicha show seven clearly dis- 

 tinguishable pairs. 



Of the species of Margarodinae in which these spiracles have 

 not been noted there are at hand specimens of Kuivania quercus 

 (Kuwana) and ■Kuwania (?) zeylanica (Green). In the former 

 there appear to be but four pairs, these being on the anterior 

 segments, and in the latter there fire eight, of which the posterior 

 • two are so much reduced as to amount to but little more than 

 points of attachment for the tracheae. 



In the Ortheziinae abdominal spiracles have bepn seen only^in 

 the three species noted by Newstead, insignis (Dougl.), O. 

 calaphracta (Shaw) and 0. urticce (Linn) but they are present in 

 O. calif ornica Ehrh., 0. galapagoensis Kuwana and in an unde- 

 termined species of which I have specimens. In 0. calif ornica I 

 note seven pairs, but in the other two species examined by me the 

 material is in too poor condition to permit conclusions as to the 

 real number. Newstead apparently does not state the number in 

 the species examined by him, but List has recorded seven pairs in 

 0. calaphracta (Shaw). Newstead states that he has not been able 

 to trace them in Newsteadia floccosa (De Geer), nor have I been 

 able to find them in Nipponorthezia ardisice Kuwana. 



The "monotypic genus Cryptokermes Hempel, which possesses 

 abdominal spiracles, forms an extremely discordant element even 

 in such an aggregation of disharmonies as the subfamily Dacty- 

 lopiina? (of the Fernald Catalogue) to which' it is now referred. 

 Specimens of C. brasiliensis Hempel, (Mexico, det. Cockerell) are 



