LARVAL AND POST-LxVRVAL TELEOSTEANS. 353 



Capros aper L. 

 The capture of eleven specimens, 3-3 to 6 mm. in length, of the Cuckoo 

 (as it is known locally in the adult state) between the twenty and forty 

 fathom contour lines within a short radius of the Eddystone rocks, from 



-2^ 



Fig. 3. — Capros apcr. Length ca. 4 mm. Oithona Station, CXVIII. A. 5tli Sept., 1913. 

 Total depth 37 fms. Midwater haul. 

 Del. E. Ford. 



the end of August to the end of September, helps to add considerably 

 to our knowledge of the early developmental stages of this species. So 

 far as I am aware, only the eggs and resulting larvae are known through 

 the researches of Cunningham* and Holt,f and one post-larva 15| mm. 

 in length described by Schmidt. J Thus, between Holt's 2-86 mm. 

 larva and Schmidt's 15jmm. post-larva nothing is known. My speci- 

 mens are all early post-larvse, but, unfortunately, they are too badly 

 damaged to give a complete descriptive series. However, I have described 

 and figured one of 4 mm. and one of ca. 5 mm. Zeus faber, the most 

 nearly allied form, differs so markedly in its post-larval characteristics 

 that there can be no confusing its early stages with those of C. aper. 



* Journ. :M.B.A. N.S., Vol. L 1889-90. 



t Annales du Musec d'Histoire Nat. de Marseille, Tome V, 2. 



t iledd. fra Komm. for Havund. Serie Fisk., Bind II. 



