APODA. -121 



P. mclanncephala, Johnst. 

 Under stones resting on a ricli oozy sand between tide-marks at Gull 

 Island, Strangford Lough, two of this species were obtained in June by Mr. 

 Hyndman and myself. Both were of a pale yellow colour ; the one ^ an 

 inch, the other 1 "inch in length ; they agreed in every respect Avith the 

 description and figures given in Mag. Zool, and Bot., vol. i. p. 33<5, pi. 17, 

 fig. 5. 



P. armata, Templeton. 

 North of Ireland, Mr. Templeton. 



Gemis Planaria. 

 P.cornuta, Mull.,Zool, Dan.; Johnston, Mag. Nat. Hist., vol. v. p. 344. 

 Atiff. 26, 1844. — Mr. Hyndman dredging to-day off Castle Chichester, 

 just within the entrance of Belfast Bay, and at a depth of from (i to 10 

 fathoms, took three specimens on LaminaricB. Although the figures of 

 this Planaria in the works cited differ a good deal, I agree with Dr. John- 

 ston in believing them to represent the same species. The Irish spe- 

 cimens as observed at various times were more round in outline than Dr. 

 Johnston's figures, and consequently quite difterent from those of ^Midler 

 in that respect. The network of reddish " vein-like ramifications " on a 

 cream-coloured ground renders this Planaria viewed as a whole very beau- 

 tiful ; the multitude of dot-like black eyes on a rich white ground 

 looked very elegant from the contrast of the white to the general reddish 

 hue of the animal. Its progress, as Dr. Johnston remarks, " for a worm " 

 is not slow : the tentacula w^re always refiected backAvards so as not to be 

 visible in a profile view. The species has been already so fully described 

 that further observations are unnecessary. One which I left gliding about 

 in sea-water, apparently in perfect health, was when I looked at it again 

 after eighteen hours not only dead, but almost Avholly decomposed. 



P. vitiata, Mont. 



A single individual of this extremely beautiful species (of Avhich Mon" 

 tagu's tAVo original specimens only have, I believe, hitherto been recorded) 

 was taken by Mr. Hyndman and myself when dredging in Strangford 

 Lough on the 1st of October — in size it exceeded Slontagu's, being 2 

 inches in length and 1 in breadth. It Avas of a Avhitish cream colour Avith 

 black lines, occasionally broken or non-continuous, disposed longitudi- 

 nally over the upper surface of the body, not unlike those Avhich on a 

 Avhiter grtjund render so attractive the plumage of the male silver pheasant 

 Phasiamis nycthemerus) : these lines arc from the delicacy of the animal 

 all visible Avhen the under side — Avhich in itself is plain Avhite — is next 

 the spectator ; it Avas surrounded by a border of pure opaque Avhite, Avhich 

 from the transparency of the entire body Avithin, imparted a bcautifvd 

 finish to its appearance ; the tAvo auricular appendages Avhich emanate 

 from the anterior margin exhibit a black line along their basal half pos- 

 teriorly ; eyes could not be distinguished. 



This Planaria Avas in form quite a j)rotcus, and gliding Avith an easy 

 motion folded itself gracefully over every object that came in its Avay. 

 Having placed it in a phial of sea-water, one half of the body rested on 

 the bottom and the other against the side, and 1)eing thus at the same time 

 horizontal and perpendiouJar, and presenting throughout its entire length 

 one mass of folds, of Avhieh no tAvo were alike in size, it looked as singu- 

 lar as beautiful. ^lonlagu's fii^ure. thoudi correct, srives no idea of the 



