Holt — On the Eggs and Larvce of Teleosteans. 467 



which is incurved at the anus («.)• Pigment is confined to a double dorsal line of 

 small black chromatophores, extending from the snout backwards along the 

 anterior two-thirds of the body. 



I think that these eggs and larva may be with little doubt referred to Ctenola- 

 brus rupestris. 



The egg is very little smaller than that of G. adspersus (which measures '85 to 

 •92 mm.). 



The larva is also a little smaller. It will be seen from Agassiz and Whitman's 

 account (op. cit, p. 18) of C. rupestris, that in the pigment, contour of the larva, 

 and sense organs, the two species present close resemblances, whilst the notochord, 

 a feature of importance, has the same peculiar structure in both. That C. rupestris 

 occurs in the neighbourhood where these ova were obtained is apparent from Day's 

 account of their habitat [op. eit., vol. i., p. 265). I myself obtained some young 

 specimens, but was not so fortunate as to get any sexually mature. Day mentions 

 a female full of spawn taken at Dublin in June. The American species spawns 

 from May to July. 



These fish seem to be known (in common witli the rest of the Labridge) as 

 gunners on the Mayo coast. 



Species V. — Coris-like. 

 (PI. XLViii., fig. 16; PI. LI., figs. 43-45.) 



These ova occurred sparingly in the surface-net on the 20th June in Tnver 

 Bay, and on the 7th July at the Bull's Mouth, Achill Island. 



The diameter is from "805 mm. to •835 mm., and there is a single colourless oil- 

 globule of •15 mm. In its early stages it is not easily distinguished from a 

 slightly smaller ovum (species VIII.). 



The shape is spherical (fig. 16), and the zona {s. r.) presents no feature of 

 special interest. The peri vitelline space (p. s.) is small, and the yolk (g.) is colour- 

 less, translucent, and homogeneous. 



I have no observations on the development in ovo. The larva emerged on the 

 23rd from an egg taken on the 20th June. 



The larva (fig. 43) is elongated. The total length (including the yolk and oil- 

 globule) is 2^44 mm., the anus being slightly anterior to median (1^13 mm. from 

 anterior end of yolk-sac). The flexure of the brain is not so apparent as in most 

 early larvae (from pelagic eggs), as the elongated yolk (j/.), having the oil-globule 

 (o.g.) at its anterior extremity, projects forward in front of the snout, thus to some 

 extent preventing the flexure. The perforated region of the gut extends under 

 the notochord some way behind the yolk, from which the narrow solid rectum (r.) 



TRANS. KOT. DUB. SOC, N.S. VOL. IV., PART VTE. 3 IT 



