On the IJoJotijpe of Paraz<;tes anclieniciis. 100 



readily into tliis scheme, owiii;^ to tlicir ahiiormal colour. 

 But their positions seem clear enoujjh, viz. ; — 



Mico melanohucus, Rib,, is a Mysta.v. 



llapah chrt/soleuciiy Wa^^n. (incl. sericeuSj Gray), is a 



true HapaJe. 

 And the following new species is a Mlco : — 



Mico leiicippe, sp. n. 



Like Il'ipale chrysQleuca, but the ears unfuft-id, nearly 

 naked. Head, fore limb-', boly, and hips f|uite white ; lower 

 legs, feet, and tail light golden yellow, not so strong as in 

 chrf/sohuca. 



Teeth witii the structure typical of Hapale, not of 

 Mystax. 



Dimensions of the type (measured in the flesh by Friiulein 

 Snethlage): — 



Head and body 235 mm. ; tail 342 ; hind foot Gl j 

 ear 30. 



Skull : greatest length 48*5 ; basal length 33' 8 ; breadth 

 of brain-case 26"2; maxillary tooth-row 11*8. 



Hah. Lower Amazons. Type from Pimental, Rio Tapajoz. 



Type. Adult male. B.M. no. 9. 3. 9. 2. Original num- 

 ber 14. Collected 13lh November, 1008, by Fiiiulein Dr. E. 

 Snethlage. Presented by the authorities of the Museum 

 Goeldi, Para. 



This beautiful white marmoset had been supposed to be 

 Hapale chrysoleuca, but is readily distinguished by its wholly 

 untufted and almost naked ears. Two specimens were 

 obtained by Fraulein Snethlage, both quite alike. 



" Shot in deep forest." — E. S. 



XXI. — The Holotype o/Parazetes auchenicus, Slater 

 {Pycnogonida). By W. T. Calman, D.Sc, F.R.S. 



(I'ublislied by permissiou of the Trustees of the British Museum,) 



In a paper published in this Magazine in 1879 (ser. 5, vol. iii. 

 p. 281), the late Mr. H. H. Slater described a Pycnogon from 

 Japan as I'arazetes auchenicus^ gen. et sp. n. Ue stated that 



