114 MASTACEMBELID^E. 



D. XXVI-XXIX G5-70 ; A. II 68-75 ; 



mouth extending to below anterior border 



of eye ; 18-22 scales between origin of: 



soft dorsal and lateral line 17. M. sJdranus, Gthr., p. 128. 



D. XXVII-XXIX 95-100 ; A. II 85-90 ; 



mouth extending to below anterior border 



or anterior third of eye; 23-25 scales 



between origin of soft dorsal and lateral [p. 129. 



line 18. M. nigromarginatus, Blgr., 



b. 30-35 dorsal spines. 

 D. XXX 75 ; A. II 75 ; mouth extending to 



below anterior border of eyo ; 18 scales 



between origin of soft dorsal and lateral 



line 19. M. moeruensis, Blgr., p. 130. 



1). XXXII-XXXV 100 ; A. II 100 ; mouth 



extending to below posterior nostril ; about 



20 scales between origin of soft dorsal and 



lateral line 20. M. victoria, Blgr., p. 131. 



II. Vent considerably nearer caudal fin than end of snout. 

 A. 29 to 32 (rarely 33) dorsal spines. 

 1. Two anal spines. 



a. Prseorbital and prseopercular spines present. 

 D. XXIX-XXX 110 ; A. II 110 j mouth ex- 

 tending to below anterior border of eye . 21. J/, ubangensis, Blgr., p. 132. 

 D. XXXI 70 ; A. II 70 ; mouth not extending 



to below posterior nostril 22. M. ellipsifer, Blgr., p. 132. 



l>. No prseorbital spine; prseopercular spines present. 



D. XXX-XXXII 85 ; A. II 70 ; mouth ex- 

 tending to below posterior border of eye; 



depth of body nearly 20 times in total [p. 133, 



length 23. M. marmoratus, Perugia, 



D. XXIX-XXX1I 70-80 ; A. II 70-80 ; 

 mouth extending to below eye ; depth of 

 body 13-14 times in total length . . . 24. M. brevicauda, Blgr., p. 133. 



D. XXXI-XXXII 90 ; A. II 90-95; mouth . 

 extending to below posterior nostril ; depth 

 of body 11 to 12 times in total length . 25. M. reticulatus, Blgr., p. 134. 



c. No prseorbital or prseopercular spines. 

 D. XXXII 70; A. II 75 26. M. mellandi, Blgr., p. 135. 



2. Three anal spines. 

 D. XXXI 51 ; A. Ill 53 ; no prseorbital or 



prseopercular spines 27. M. brachyrldrms, Blgr., p. 136. 



