1862.] OF FISHES FROM MADEIRA. 179 



its membrane has thirty divisions, but the rows of scales that abut 

 upon it are about eighty-six in number. 



The csecal stomach was found to be of moderate length, and there 

 were only two pyloric cseca. The intestine was long, having one 

 convolution. No air-bladder was observed. Its colour was a uniform 

 pinky red, minutely dotted with black. 



In consequence of the anterior part of the dorsal fin having been 

 injured, the comparative length of the spines could not be ascertained. 

 The number of the branchiostegal rays on one side is sis, on the 

 other seven. 



From Sehastes dactylopterus, S. Jcuhlii, and S. maderensis, the 

 only three Madeiran species of that genus hitherto known, it is well 

 distinguished by the flatness of the head between the eyes, by the 

 absence of prominent spines from the vertex, by the third (not the 

 second) anal spine being the longest, by the broad membranous lateral 

 line, and by the cycloid scales. From the first-named species it is 

 further distinguished by the soft rays of the dorsal fin being nine in 

 number, in place of twelve ; and from the two latter species by the 

 black pharynx. With Sebastes filifer, Val. (Ich. Can. p. 21, pi. 2. 

 fig. 2), this fish agrees in having scales with simple borders ; but it 

 differs (in addition to the characters by which the genus Setarches 

 is separated from the genus Sebastes) in the number of the rays of 

 the pectoral fin (22 in place of 1 6), in having, not all, but only the 

 two first and the last five rays of that fin simple, in possessing five 

 in place of four preopercular spines, and in the smaller scales (86 

 in place of 62 along the lateral line). 



Dedicated to my friend Dr. A. Giinther, the well-known ichthyo- 

 logist, to whom I am indebted for much valuable instruction. 



The following are the dimensions in inches of the principal parts 

 of the specimen, which is now in the British Museum :*— - 



Total length 9 



Height . , 2i 



Length of head 3-fij 



' of second preopercular spine -^ 



Diameter of eye ^ 



Length of maxillary 1^ 



of base of dorsal fin Z^ 



• of pectoral fin 2|- 



■ of base of pectoral fin ^ 



' — of ventral fin 1 5^ 



' — — — of base of anal fin f 



• of third anal spine ^ 



of caudal fin lyxr 



Distance of vertical of vent from snout 5f 



Fam. Percidje. 



PRIACANTHUS INStJLARUM, Sp. 11. 



D. 10. 15. A. 3. 15. Scales of lateral line, about "J^. 



This species has a close resemblance to P. macrophfhalmus, from 



