796 MR. D. BRTCB OS THE [June 15, 



4. Callidina. alpifm, Ehr. 



Ehrenberg's solitary species from Spitsbergen, previously found 

 by him on the Swiss Alps. This confirms my identification with his 

 species of the form found by me on the South Coast of England. 



Two or three specimens only. 



5. Callidina cojfSTEiCTA, Duj. 

 In moderate numbers. 



6. Callidina teteaodon, Ehr. 

 A few specimens. 



7. Callidina musculosa, Milne. 

 A very few examples. 



8. Callidina tenusta, u. sp. 

 (=Maci'otrctc7ieIa elegans, Milne (7).) 



(Inasmuch as the genus Macrotrachela, proposed by Milne, 

 has fallen to the ground, the various species described by him 

 have to be redistributed. M. elec/ans would thus become Callidina 

 elegans, but that name had already been employed by Ehrenberg 

 for a very diiferent form. I take this opportunity of renaming a 

 well-marked species, which, from the unfortunate choice of specific 

 name, has lately been overlooked.) 



Sj}. Ch. — Rather slender, of medium length: corona very 

 narrow (O-OSO mm.), about equal to collar, a fourth wider than 

 neck (0-023 mm.) ; disks separated by deep notch. Upper lip 

 slightly convex. Dorsal antenna equal to or exceeding neck 

 thickness. Head, neck, and trunk rather parallel-sided in dorsal 

 view. Foot very short, of four joints rapidly tapering ; spurs 

 partly hidden, two short acute cones, held nearly parallel. Mastax 

 scutelliform. Eami ((J-016 mm.) long, formula 6/6 to 10/10. 

 Food moulded into pellets. Maximum length 0-2.50 mm. 



The present specimens vary from the type in having only about 

 6 teeth on each ramus, a variety already noticed in the London 

 district. This species is rarely found in moss growing in positions 

 usually dry. I have elsewhere noted its owast- tube -making 

 habits (2). 



9. Callidina eusseola, Zelinka. 



This bulky species was present in some numbers. 



10. Callidina lata, Bryce. 



Two specimens occurred in one washing. 



11. Callidina aspeea, Bryce. 

 One living and one dead example. 



12. Callidina plicata, Bryce. 

 The most numerous species. 



