66 Pror. M'Tntosli's Xofes from (he 



Biotoecns opercularis. 



Sfiraca o/wr?//«m, Stoinil. SitzK Ak. "SVipii, Ixxi. L^7."), p. 12"). 

 L'ioforrus opercularis, PelU-gr. Meiu. Soc. Zool. Franco, xvi. 1903, p. 199 

 (1904). 



Dcptli of body 3q-4 in the length, lengtli of liead 3. 

 Snout as long as eye, the diameter of which is 3^ in the 

 length of head and 1\ times the interorbital width. Prse- 

 maxillaries protractile, the length of their processes 2-27| in 

 that of the head ; maxillary completely sheathed by the 

 prjeorbital, extending to below anterior margin of eye ; 

 lower jaw slightly projecting ; depth of praeorbital ^ the 

 diameter of eye; cheek with 4 series of scales. Scales 

 29-30-!. Dorsal YII-VIl I 13-14. Anal III 7. Caudal 

 slightly emarginate, scaly at the base, the upper ray often 

 elongate. Caudal ]icduncle longer than deep, its length ^ of 

 the lengtli of the fish (without caudal). A dai'k spot on the 

 operculum, another at the base of caudal ; a scries of dark 

 blotches on the upper part of the body ; anterior and upper 

 edge of spinous dorsal blackish ; caudal with alternate clear 

 and dark spots. 



Total length about 50 mm. 



Lake Saraca, R. Amazon. 



Vir. — Nutesfrom the Gutty Marine Lahoratorij, St. Andrews. 

 No. XXV II. By Prof. M'Intosh, xM.D., LL.D., F.H.S., &c. 



[Plates II. & III.] 



1. On a very young Stage of Phycis blennoules, Bl. 



2. On the Female Heteronereid oi Nereis pelagica, L, 



3. On Bitid Nemertean.? (Cerehratulus aiir/ulatus, O. F. 'M., = m'xrf/i)i(dut, 



Renier ?) from Aberdeen Bay and Naples. 



4. On Amphiporus hastatus, M'Intosh. 



1. On a very young Stage of Phycis blennoides, Bl. 



The example was kindly brought under notice by Dr. J. 

 H. Ashworth, of Edinburgh University, mIio procured it 

 from the ^lediterranean. It was captured by a skilful 

 collector of marine organisms off Messina in April 1905, and 

 it appears that no such specimen has been seen, at any rate, 

 for 25 years. 



