442 Holt — On the Eggs and Larvce of Teleosteans. 



the level of the anus, and is widest dorsally and ventrally. The third band is not 

 very conspicuous ; it lies at the commencement of the 2nd third of the post-anal 

 region of the trunk. 



The fourth and last band is the most conspicuous and broadest, embracing the 

 hypural thickening, and the trunk for some distance in front of this. 



From the abundance of the pigment, the body has little translucence. The 

 reddish-brown, conspicuous by transmitted light, is not distinguishable by reflected 

 light from the surrounding black pigment. 



The general effect to the naked eye is a dark olive-green, crossed by black 

 bands at the regions described. 



Compared with the figure of the larval goby, the anus in this specimen is seen 

 to be much further back, occu^Dying indeed a position posterior to that seen in the 

 adult. Such a condition occurs also in late post-larval and young specimens of 

 Gohius rutliensparri and G. miniitus. 



The ova of Gohius niger are figured in the note previously referred to.* 



Callionymus lyra (Linn. ). The Dragonet, &c. 

 (PI. LI., figs. 40-42.) 



A few ova of this species were taken in the surface net off Cleggan Head on 

 the 12th June, in Inver Bay on the 20th June, and in Blacksod Bay on the 10th 

 July. 



The eggs are well known, but the larva has hitherto escaped attention. I was 

 successful in hatching two eggs on this occasion. 



The newly-hatched larva (figs. 40 and 41) has a total length of 2*08 mm., of 

 which the head and yolk (g.) occupy -895 mm. The snout is as yet blunt, and the 

 head has the rounded contour usual in early larvae from pelagic ova. Tlie eyes 

 are comparatively large at this stage, with a conspicuous choroidal fissure. The 

 otocysts {ot.) are small and oval, and as yet remote from the eyes. The cerebellar 

 fold is rather large, but the pineal sac is not as yet visible. The heart (h.) is 

 lodged in a depression of the yolk (y.), which is still very large, "835 mm, by 

 •595 mm. 'The yolk sac (y. s.) is rather thick, and exhibits certain irregular nodo- 

 sities in optical section (c/. fig. 40). Faint strige are visible on the surface of the 

 yolk, which has a slight median lateral constriction. The body has somewhat of 

 an S flexure (fig. 41), being incurved over the yolk, and upturned midway between 

 the latter and the posterior extremity. The gut is small, but is tubular for part of 



* In this note, while referring toHofFmann's ivork on the subject, I overlooked a figure (Taf. iii., fig. 9) 

 described as the egg of G. minutus. I cannot regard Hoffmann's identification as correct, since he shows 

 the attachment process as a ring of simple filaments, very different from the reticulate condition of that 

 structure which I have observed in the ovarian eggs of G. minutus. 



