380 MR. R. COLLETT ON THE GREY SEAL. [Mar. 1, 



Fig. 14. Erastria pallidisca, n. sp., p. 372. 



15. Leucania nainica, n. sp., p. 337. 



16. howra, n. sp., p. 337. 



17. dharma, ii.sp., p. 338. 



18. bistrigata, n. sp., p. 334. 



19. consimilis, n. sp., p. 336. 



20. Adisura dulcis, n. sp., p. 368. 



21. Erastria inarginata, n. sp., p. 372. 



Plate XXXVIII. 



Fig. 1. Neuria simulafa, n. sp., p. 343. 



2. Apaniea cuprina, n. sp., p. 345. 



3. Graphiphora flavirena, n. sp., p. 352. 



4. nigrosigna, n. sp., p. 352. 



5. Hermonassa simiaia, n. sp., p. 353. 



6. Megasema cimiamomca, n. sp., p. 352. 



7. Phothedes bipars. n. sp., p. 373. 



8. Apaviea mucronata, n. sp., p. 345. 



9. strigidisca, n. sp., p. 346. 



10. nuiila, n, sp., p. 346. 



11. Eattia monilis, n. sp., p. 348. 



12. cervina. n. sp., p. 348. 



13. Acosmetia nchulosa, n. sp., p. 350. 



14. Thalpochares quadrilincata, n. sp., p. 370. 



15. Caradirina dclecfa, n. sp., p. 349. 



16. CelcB7ia sikkimeims, n. sp., p. 348. 



17. Hermonassa chalybeata, ii. sp., p. 353. 



18. Euplexia distorta, n. sp., p. 354. 



19. Cosmia hypcnoides, n. sp., p. 354. 



20. Bianthecia conjluens, n. sp., p. 354. 



21. Thalpochares tri/asciata, n. sp., p. 370. 



2. On Halichoerus grypus and its Breeding on the Fro 

 Islands off Throndhjems-fjord in Norway. By Robert 

 CoLLETT, C.M.Z.S. 



[Eeceived January 28, 1881.] 



In Norway the Grey Seal {Halichoerus grypus) is found along 

 the entire coast-line as far north as Tromsii. Although it is beyond 

 comparison the most common species of Seal after Phoca vituUna, 

 it can hardly be called numerous ; but here and there are special 

 places of resort, where they collect together in the autumn for 

 breeding-purposes. In the most northern parts of the country it is 

 doubtless rare, although our knowledge of the Seals of those regions 

 is very limited. It has, however, been observed at Tromso (GQ'^ 30') 

 by Professor Lilljeborg ; but no reliable observations have been made 

 as to its existence in Finmark proper. 



One of the principal breeding-places of this Seal is the Fro 

 Islands, outside the Throndhjems-fjord, a group of small low-lying 

 islands, stretching about 50 or GO kilometres from south to north, 

 at a distance of about 30 or 40 kilometres from the mainland. 

 Besides eight inhabited islands, the group contains an innumerable 



