f 



30. (HONYOEOUE. 179 



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



shells). Voyage of the llattlesnake. 

 /i-. Adult : stuffed. Louisiade Archipelago. Presented by the Lords 



of the Admiraltj-. 

 I, m. Half-grown : stuffed. Louisiade Aixhipelago. Presented by 



the Lords of the Adniii-alty. 

 n-^). Half-grown. Amboyna. Purchased of Mr. Frank. 

 q. Adult : stuffed. Isle de France. 

 r. Half-gro^vn : stuffed. Red Sea. From the Frankfort Museum. 



Skeleton. — The external appearance of the species of Genyoroge 

 exhibiting a more elevated form than the Sen-ant, we find aU 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, 

 arises above the middle of the orbit, articulates with one of tlie pro- 

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

 with a point directed backwards ; the exterior ridge arises from 

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

 culates with the other i)rocess of the suprascapula. The space 

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

 several low ridges and grooves ; the praeorbital bone is large, trape- 

 aoidal, and broader than the space between the orbits ; the suborbital 

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

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

 ramis). The maxillary bone gradually widens behind, ■sWth 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 prffioperculum is minutely serrated 

 above the notch, the denticulations becoming coarser at the angle 

 and at the lower limb ; sub- and interoperculum entii'e ; the knob 

 of the latter is a tiiie spine, directed upwards. The coracoid bone is 

 formed, as usual, of two l)ones ; but they are here very broad, the 

 lower terminating in a point. The first interhaemal spine is strong, 

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

 to the ha;mal 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 ; tlie 

 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 csenUeovittata. 



Diacope cieruleovittata, Cm: ^- I'al. vi. p. 530. 

 D. H. A. 1. 



13 y 



Eight blue longitudinal bands on each side. Eye very large. ( Val. 

 Isle de France. 



N 2 



