446 MR. F. DAY ON LUMPENUS LAMPETRIFORMIS. [June 17, 



1876-78) has so fully worked out the various forms that further 

 remarks are unnecessary. 



Gill divided the genus Lumpenus into three subgeneric groups :— 



(1) Leptoclinus, with teeth in the jaws, palatine bones, and vomer. 



(2) Lumpenus, with teeth in the jaws and palatine bones. 



(3) Leptoblennius, with teeth in the jaws only. 



To this last subdivision belongs the fish obtained off St. Abba 

 Head. 



Lumpenus lampetriformis. (Plate XLI.) 



Blennius, &c, Mohr, Forsog Isl. Nat. p. 85, t. iv (1786). 



Blennins lampretce-formis, Walb., Artedi, p. 184, pi. iii. fig. 6 

 (1792). 



Lumpenus lampetraformis, Collett, Norw. North-Atl. Exp. 1876- 

 78, p. 71 (see synonymy). 



B. vi. D. 72. P. 14. V. 1/4. A. 1/51. C. 13. Csec. pyl. 2. 



inch. 



Length of specimen 10' 7 



head 1'2 



,, caudal fin i*2 



„ pectoral fin 08 



Height of body 06 



„ dorsal fin 0'4 



„ anal fin 0'4 



Eyes one diameter from the end of the snout and one third of a 

 diameter apart. 



Body strongly compressed. Upper jaw slightly the longer. 

 Nostril with a short tube, one large pore anterior, and another 

 posterior to it. Teeth in several rows in the upper jaw, a double 

 row in the front portion of the lower jaw, decreasing laterally to one. 

 Branchial opening wide, extending forwards to beneath the hind edge 

 of the eye. Vent situated at 3*7 inches from the end of the snout, 

 or at about the commencement of the second third of the total 

 length. Fins. All the dorsal rays spinate, the first three short and 

 commencing above the hind edge of the opercle, then gradually 

 increasing in length to above the vent, a short distance subsequent to 

 which they gradually decrease ; the last dorsal spine laid flat does 

 not extend to above the base of the caudal fin. Pectoral with its 

 four lower rays thickened. Ventrals with one spinate ray and four 

 branched ones; it is inserted slightly before the base of the pectoral. 

 Anal with one spine and 51 rays which are very indistinctly branched, 

 the inter-radial membrane deeply cleft, the last ray reaching to the 

 base of the caudal fin. Caudal with one elongated ray above and 

 another below, the five intermediate ones being somewhat concave, 

 the remainder being shorter. Most probably this elongation is a 

 sexual indication, this fish being a male. Caecal appendages two 

 rather large ones. Scales. A few non-imbricate ones on the cheeks; 

 those on the body increasing in size posteriorly. Colours. Pinkish- 



