204 THE CANADIAN ENTOMOLOGIST. 



antero-posteriorly b)^ a shallow groove; long. 2^, alt. 2, lat. 3 mm. 

 Glassy scale very thin, white and semi-transparent, forming siiblateral 

 low cones, concentrically but not longitudinally striate. 



Dermis (after boiling) colourless, not tessellated ; a marginal row of 

 small, short spines and round gland-orifices. No vestige of legs or 

 antennfe could be seen, although the specimens were easy to examine for 

 such characters by reason of the transparent dermis. 



Mouth parts distinct and well-developed, mentum apparently 

 monomerous, broad, with a pair of small bristles on each side near the 

 tip. Rostral filaments short. 



Anogenital ring with several hairs. Anal plates small, their external 

 sides meeting at about a right angle ; the anterior-external side decidedly 

 longer than the posterior-external. Immediately cephalad of the plates, 

 and partly surrounding them, is a broad brown chitinous crescent; its 

 breadth in the middle rather greater than the length of the plates. 



Hab., on My?'tus ( Blepharocalyx) tweedii; Rio Grande do Sul, 

 Brazil ( Von Ihering, No. 45). I presume it infests the twigs, but the 

 specimens sent were detached and in alcohol. The glassy covering is 

 very fragile, and in every specimen was broken; in several altogether lost. 



This remarkable coccid should form the type of a new genus, but is 

 now placed in a sub-genus of Lecaniufn as a matter of convenience and 

 to indicate its relationships. At first sight one would take it for a highly 

 specialized form, the end of the branch of subglobose neotropical species. 

 But it shows curious resemblances to several genera and species, and for 

 this reason might be thought a primitive type. 



The arrangement of the anogenital structures seems rather like that 

 of L. baccatuin, but that is believed to have a hairless anogenital ring. 



The broadened form, with median groove, and the lack of legs in 

 the adult, strongly suggest Physokermes. The derm, however, is not 

 tessellate. 



The glassy covering recalls at once Inglisia, but it does not show 

 the "air-cells" of that genus. The way in which the glassy covering is 

 formed suggests Fairmairia. 



