162 MR. C. TATE REGAN ON THE 



D. XIV-XV 8-10. 10 to 12 gill-rakevs on lower part of 



anterior arch 19. microdon. 



1). XV-XVII 9-10. 9 to 11 gill-ralvers on lower part of 



anterior arcli 20. cfuiarti. 



** Caudal peduncle once to Ij as long as deep; 5 series of scales on 

 cheek. 

 Depth of pra3orbital not greater than diameter of eye (in a 



specimen of 200 mm.) 21. serranus. 



Depth of prseorbital considerably greater than diameter of 



ej'e (in a specimen of 220 mm.) 22. altigenis. 



*** Caudal peduncle IJ as long as deep ; 6 or 7 series of scales on 

 cheek 23. squamulatus. 



B. Outer teeth rather strong, set well apart. 

 Pectoral not reaching anal; caudal subtruncate; mouth 



little oblique 24. hayoni. 



Pectoral reaching anal ; caudal truncate ; mouth oblique ... 25. macrodon. 



C. Lower jaw strongly projecting. 



A. Pectoral reaching anal; caudal truncate; mouth moderatelj'^ oblique; 



maxillarj' not extending to below eye. 



Eye 5 in head (in a specimen of 170 mm.) 26. prognatlms. 



Eye 4 in head (in a specimen of 180 mm.) 27. maculipinna. 



B. Pectoral reaching anal, or nearly: caudal rounded or subtruncate ; maxillary 



reaching verticalfrom anterior edge of eye. 

 1. Mouth moderately' oblique ; maxillary extending to below eye. 

 a. Pra^maxillary pedicels ending above nostrils ... 28. dichrourus. 

 h. PriEmaxillary pedicels ending well behind nostrils. 



Maxillary extending to below anterior \ of eye ; caudal 



peduncle longer than deep 29. speJcii. 



Maxillary barelj^ reaching vertical from anterior edge of 



eye; caudal peduncle as long as deep 30. serranoides. 



2. Mouth very oblique. 



Maxillary reaching vertical from anterior edge of ej-e 31. acutirostris. 



Maxillarjf not reaching vertical from anterior edge of eye ... 32. plagiostoma. 



C. Pectoral not reaching anal ; mouth not very oblique ; lower jaw very 



prominent, with the anterior teeth exposed. 

 Outer teeth forming a close-set series; maxillary reaching 



vertical from anterior edge of eye 33. ma crogna thus. 



Outer teeth strong, spaced ; maxillary not quite reaching 



to below eye 34. dentex. 



Outer teeth strong, spaced ; maxillary not nearlj^ reaching 



to below eye 35. mento. 



D. Pectoral not reaching anal ; mouth very oblique. 



1. 8-10 scales from origin of dorsal to lateral line ... 36. cavifrons. 



2. 5 to 7 scales from origin of dorsal to lateral line. 



a. Depth of body 2| in the length 37. ortliostoma. 



b. Depth of bod\' 3 to 4,^ in length, 



a. Caudal peduncle 1^ to Ij as long as deep. 



Lower jaw projecting upwards above end of snout 38. xenostoma. 



Lower jaw not projecting above end of snout; maxillary not 



quite reaching vertical from anterior edge of ej'e 39. pellegrini. 



Lower ja"W not projecting above end of snout; maxillary 



ending midway between nostril and eye 40. argenteus. 



/3. Caudal peduncle If to 2g: as long as deep. 

 Snout If to twice diameter of eye (in specimens of 100 to 



160 mm.) 41. lougirostris. 



Snout Ig- to If diameter of eye (in specimens of 115 to 



150 mm.) 42. gracilicauda. 



III. Outer teeth few and large, with long anterior cusp and indistinct posterior 



cusp (i?at/0M!V( Bouleng.) 43. xenodon. 



IV. Teeth slender, distally expanded and compressed, outer obliquely truncated 



{Maploehromis Hilgend.) 44. obliquidens. 



