• 30. GKNYOROGK. 179 



i. Adult : stuffed. Louisiade Archipelago (in 15 fathoms ; sand and 



shells). Voyage of the Rattlesnake. 

 /.;. Adult : stuffed. Louisiade Archipelago. Presented by the Lords 



of the Admiralty. 

 /, m. Half-grown : stuffed. Louisiade Archipelago. Presented by 



the Lords of the Admiralty. 

 n-p. Half-grown. Am])oyna. Purchased of Mr. Frank. 

 <j. Adult : stuffed. Isle de France. 

 r. Half-grown : stuffqd. 'Red Sea. From the Frankfort Museum. 



Skeleton. — The external appearance of the species of Oenyoroge 

 exhibiting a more elevated 'form than the Serrani, we find all the 

 bones situated in a vertical direction, higher, and more developed. 

 The horizontal part of the occipital crest is as broad as the vertical, 

 bifid in front, and extending between the orbits. There are two other 

 ridges on each side of this crest, such as may be found more or less 

 developed in the Serrani : the interior, parallel to the occipital crest, 

 ai^iscs above the middle of the orbit, articulates with one of the pro- 

 cesses of the suprascapula, and terminates on the paroecipital bone, 

 with a point directed backwards ; the exterior ridge arises from 

 above the suborbital arch, descends in an oblique direction, and arti- 

 culates with the other process of the suprascapula. Tbc space 

 between the orbits is neither concave nor convex, uneven, with 

 several low ridges and grooves ; the procorbital bone is larg(^, trape- 

 zoidal, and broader than the space between the orbits ; the sul)()rbital 

 arch is very narrow, and provided at its inner side with a broad, thin, 

 concave plate for supporting the eyeball from bcincnth (as in Ser- 

 ranus). The maxillary bone gradually widens Ijchind, with a rather 

 convex superior margin and a rather concave inferior one. The 

 operculum with an upper entirely rounded point, and with 'a lower 

 moderate, acute spine ; the pra^operculum is minutely serrated 

 above the notch, the denticulations becoming coarser at the angle 

 and at the lower limb ; siib- and interoperculum entire ; the knob 

 of the latter is a tnie spine, directed upwards. I'he coraeoid bone is 

 formed, as usual, of two bones ; but they are here very broad, the 

 lower terminating in a point. The first interhamal ^pine is strong. 

 equal to the length of the second vertebra to the eighth, and is fixed 

 to the haemal of the tenth. There is a pair of strong canines on each 

 side of the upper jaw ; those of the lower jaw are very small ; the 

 teeth of the exterior series in the mandibula gradually become larger 

 on the middle of the dental bone, and again decrease in length behind ; 

 the series of vomerine teeth forms an obtuse angle. 



5. Genyoroge caeruleovittata. 

 Diacope caeruleovittata, Cuv. Sf Vol. vi. p. 530. 



Eight blue longitudinal bands on each side. Eye very large. ( V«l. 

 Isle do France. 



N 2 



