On a new Scale-Insect of the Genus Walkeriana. 45 



Skull : length from front of interparietal to tip of nasals 34 ; 

 greatest breadth 20*3; nasals, length 16*7, least breadth 3, 

 greatest breadth 5; interorbital breadth 7 ; tip to tip of post- 

 orbital processes 7*8 ; intertemporal breadth 7*2 ; palate 

 breadth 12 ; combined lengths of ms. 1 ' 3 7*2. 



Hab. San Pablo, S.W. Colombia, alt. 1500 m. 



Type B.M. no. 98. 9. 5. 2. Collected by Gustav Hopke, 

 March 29, 1897.^ 



The only species with which M. phcea could be confused is 

 Tomes's Didelphys Waterhousei, and that is distinctly stated 

 both by collector and describer to have a complete pouch, and 

 the figure of its skull shows that it has well-marked triangular 

 postorbital processes. 



Herr Hopke obtained two quite similar examples of 

 M. phcea (both females), one of them with four young attached 

 to its mammse. 



V. — Description of a new Scale-Insect of the Genus 

 Walkeriana. By E. E. Green, F.E.S. 



[Plate V.] 



The specimens referred to in this paper were received some 

 time ago at the British Museum, and as the species appeared 

 to be new, I asked Mr. Green to furnish me with a description 

 of it. This he has kindly done, and I have now much 

 pleasure in submitting it for publication. — Chas. 0. Watee- 

 HOUSE. 



Walkeriana Andrece, sp. n. (PI. V.) 



Adult (?) female (fig. 1) oval, convex above, with the median 

 dorsal area slightly depressed. The whole body closely 

 covered with granular waxy matter. Complete marginal and 

 a dorso-lateral series of stout, bluntly tapering, dense waxy 

 processes, those on the anterior third of the body directed 

 forwards, the others backwards. Of these processes there 

 are 27 in the marginal series (13 on each side and 1 from the 

 posterior extremity) and 13 or 14 on each side in the dorso- 

 lateral series. From between the marginal processes and 

 from their truncate ends spring delicate silky filaments. 

 Colour of denuded body of dried insect dark reddish brown, 

 but this is entirely concealed above by the close covering of 

 fulvous-white waxy matter, and below it is obscured by a 

 thinner covering of whitish powder. Antennas 8-jointed, 



