HAPLOCHILUS. 41 



D. 10-11 ; A. 14-15 ; Sc. 32-36 ; posterior 

 dorsal and anal rays longest ; caudal 

 peduncle If to twice as long as deep . . 4. H. christyi, Blgr., p. 46. 



B. Eye 3| to 4 times in length of head. 



1. Caudal peduncle 1^ to 2 times as long as deep. 

 D. 10 ; A. 13-14 ; Sc. 30-32 ; depth of body 



6 to 6i times in total length ; caudal 



rounded or subacuminate 5. H. fervanti, Blgr., r>. il. 



D. 11-12 ; A. 14-15 ; Sc. 30-34 ; depth of 



body 4£ to 5^ times in total length ; 



caudal subacuminate 6. II. earner onensis, Blgr., p. 47. 



D. 11 ; A. 15-16 ; Sc. 32-33 ; depth of body 



5i to 6 times in total length ; caudal 



rounded 1. II. liberiensis, Blgr., p. 48. 



D. 10-11 ; A. 14-15 ; Sc. 29-32 ; depth of 



body 4 to 5 times in total length ; caudal 



rounded, with upper and lower rays 



produced in males 8. II. lujm, Blgr., p. 49. 



2. Caudal peduncle not longer than deep. 



a. Caudal rounded. 



D. 11 ; A. 14 ; Sc. 28 ; pectoral f length of 



head 9. //. liomalonotus, A. Duin., p. 50. 



D. 10 ; A. 13 ; Sc. 30 10. H. nuchimaculatus, Guichen., 



D. 12-13 ; A. 17-19 ; Sc. 29-32 ; pectoral [p. 50. 



^ to | length of head 11. II. playfair'ii, Gthr., p. 51. 



D. 11-12; A. 16-18; Sc. 27-29; pectoral 



f to | length of head 12. II. fasciolatus, Gthr., p. 52. 



b. Caudal acuminate or rounded-subacuminate. 

 D. 11 ; A. 16 ; Sc. 30-31 ; caudal acutely 



pointed 13. //. ansorgii, Blgr., p. 53. 



D. 10-12 ; A. 15-17 ; Sc. 28-32 ; caudal 



rounded-subacuminate 14. H. sexfasciatus, Gill, p. 54. 



II. Dorsal 6-10 ; scales 23-32 in a longitudinal series. 



A. Dorsal originating above middle of anal, rarely further back*. 

 1. Eye considerably shorter than postocular part of head. 

 a. 24-28 scales in longitudinal series. 

 D. 7-8 ; A. 14-15; Sc. 25-27 ; caudal rounded 

 or rounded-acuminate ; caudal peduncle 

 not longer than deep 15. H. cliaperi, Sauv., p. 56. 



* II. kingii, p. 64. 



