45. TRiaLA. 207 



humerus* is nearly straight, with two short processes for the junction 

 with the scapula, and with a flat, triangular, ridged spine immediately 

 behind the processes mentioned. The epicoracoid is suspended at the 

 inner side of the spine, and is a single, styliform, rib-Uke bone. The 

 ulna and radius are separated from each other by a wide free space : 

 the former is situated before the upper carpal bone, and is similar in 

 size and shape to one of the larger carpal bones ; the radius is elon- 

 gate, triangular, with a small foramen in the middle. There are 

 four carpal bones, the upper of which is small ; the pectoral ap- 

 pendages are articulated to the two lower ones. Each pubic bone 

 has two Umbs : the anterior is formed by three lamella3, the interior 

 and inferior of which are the broadest ; the anterior limbs of both 

 bones converge towards the symphysis of the coracoids, leaving a 

 cordate free space between them. The posterior limb, with its 

 fellow, forms a regularly triangular plate, emitting anteriorly a very 

 long and slender process, which reaches nearly to the other extre- 

 mity of the free space. There is no glossohyal ; the urohyal is a 

 simple vertical plate. 



There are fomteen abdominal and twenty caudal vertebne, the 

 length of the former portion of the vertebral column being to that of 

 the caudal as 1 : 1-55. The three anterior vertebrae are rather com- 

 pressed in their longitudinal diameter. The structure of the inter- 

 neural spines is the same as in T. pini. The above description is 

 taken from a specimen twenty-four inches in length, probably a 

 female. 



In specimens fifteen inches in length, the number of abdominal 

 vertehroi is the same, viz. fourteen ; but that of the caudal portion is 

 twenty-four ; and the ratio of the lengths of both portions is 1 : 1-86. 

 Perhaps these fishes are males. 



12. Trigla cnculus. 



MilviLS, Rotidel. x. c. 8. p. 297 ; Aldrov. ii. c. 58. p. 279. 



Trigla cuculus, Bloch, ii. p. 124. tab. 59 ; Bl. Sclm. p. 14 ; Risso, Ichth. 



Nice, p. 208 (not Hist. Nat). 

 milvus, Lacep. iii. pp. 340, 362; Riaso, Hist. Nat. iii. p. 395; 



Cuv. <^ Val. iv. p. 07 ; lionap. Faun. Ital. Pesci, pi. . f. 3. 



blochii, Yarrell, Brit. Fishes, i. p. 56. 



Triglse gumardi var., Parn. Fishes Frith of Forth, p. 21. pi. 23. 



D. 9 I 19. A. 19. C«c. pylor. 5. Vert. ^. 



The snout is elongate, with the upper profile straight ; the space 

 between the eyes is slightly concave, and less than the diameter of the 

 eye. Prseorbital anteriorly with some smaU prominent spines. The 

 bony plates along the base of the dorsal fin have smooth edges, each 

 terminating posteriorly in a spine. The dorsal spines are robust : 



* Prof. Owen retains the name of 'humerus' for the same bone to which it 

 has been applied by Cuvier and the German anatomists, whilst he alters the 

 name of ' coracoid' into that of ' epicoracoid' (see Archetype). Owing to a mis- 

 representation of Prof Owen's theory in Sir J. Richardson's Ichthyology, in all my 

 foregoing descriptions the ' coracoid ' has been called the ' humerus,' and vice versa. 



