Trigla Cuculus with T. Gurnardus. 415 



T. Gurnardus. 



No. 6. = 11 inches long. Female, colour blackish-grey, a black 

 spot on D. fin. Scales on D. ridge all crenated, points directed up- 

 wards ; those on the lateral line all crenated, occasional scales 

 throughout its length terminating in a hooked spine, 3 anterior D. 

 rays crenated. 



No. 7. = 1 1| inches long. Male, colour greyish-red, black spot 

 on 1st D. fin. Scales throughout D, ridge crenated, but nearly all 

 of them having the terminal hooked spine ; scales on lateral line all 

 crenated, but, as in the D. scales, all except those occupying the 

 anterior inch terminated by a spine ; 1st and 2nd anterior rays only 

 of 1st D. granulated. 



No. 8. = 13^ inches long. Colour blackish- grey, with a slight tinge 

 of pale-red over it ; 1st D. fin generally dusky. Scales of D. ridge 

 crenated, all the points directed upwards ; scales throughout lateral 

 line crenated, many of them on the hinder f rds of its length termi- 

 nating in a spine ; 1st 3 D. rays granulated throughout almost their 

 entire length ; 4th and 5th rays partially granulated. 



No. 9. = 13^ inches long. Female, colour dark-grey, varied with 

 yeUow ; D. fin generally blackish, but of a darker hue where the 

 black spot usually occurs. Scales on D. ridge crenated throughout, 

 points directed upwards; D. scales as in No. 8.; 1st and 2nd D. 

 rays granulated nearly throughout their length, 3rd and 4th slightly 

 so about the middle. 



No. 10 = 14 inches long. Female, colour grey, varied with yel- 

 low, 1st D. fin with a black spot. Scales on D. ridge and lateral 

 line as in last, four anterior rays of 1st D. fin conspicuously granu- 

 lated, 5th partially so about the middle. 



No. 11 = 15 inches long. Female, colour dark-grey, varied by 

 yellow; 1st D. fin generally, pale dusky*. Scales on D. ridge and 

 lateral line as in last; 3 anterior rays of 1st D. fin strongly granu- 

 lated throughout almost their entire length, 4th and 5th granulated 

 for more than half their length ; 6th granulated on one side. No. 6., 

 1 1 inches long, was considerably darker in colour than the three last. 



Thus the T. Cuculus may be traced gradually passing into 

 the T. Gurnardus, until this species appears fully developed. 

 It may further be perceived, that as this fish increases in size, 

 the granulations extend over the rays of the first dorsal fin, 

 and are not confined, as described by authors, to the three or 



* The recent colours of all but Nos. 1-3 are here given. 



