Add:- 



59. Ad. 



60-61. Yg. 



62-63. Yg 



Add :- 



2-6. Ad. 



SILURID-E. 31 1 



Geba R. at Bafata, Portug. Guinea. Dr. W. J. Ansorge (C). 



Dunga, Uelle. Capt. Hutereau (C). 



N. Sherbo district, Sierra Leone. N. W. Thomas, Esq. (P.). 



4. AUCHENOGLANIS ALTIPINNIS, Blgr. 



Akonolinga, Nyong R. G. L. Bates, Esq. (C). 



la. AUCHENOGLANIS MONKEI. 

 Keilhack, Mitth. Zool. Mus. Berl. v. 1910, p. 120. 



Depth of body of to i\ times in total length, length of head 3^ times. 

 Head 1^ times as long as broad, smooth above ; snout obtuse, f to 

 •£ length of head ; occipital process long and narrow, in contact with 

 the rather large interneural plate; eye superior, 8 to 9 times in length 

 of head, 3 times in interorbital width ; width of mouth at least \ length 

 of head ; prse maxillary teeth forming a kidney-shaped patch, which is 

 \ to \ as broad as long; mandibular teeth in two rounded patches. 

 Maxillary barbel f to f length of head, outer mandible 1£, inner f to §. 

 Humeral process long and narrow. Dorsal I 7 ; spine feebly serrated 

 in frout, \ length of head. Adipose dorsal 4f to h\ times as long as 

 deep, to 8 times as long as its distance from rayed dorsal. Anal 12. 

 Pectoral spine feebly serrated in front, strongly behind, \ length of 

 head. Ventral not reaching anal. Caudal rounded. Caudal peduncle 

 deeper than long. 6 or 7 transverse series of dark brown spots on the 

 body ; fins with transverse series of dark dots. 



Total length 85 millim. 



Duala, Cameroon. — Types in Berlin Museum. 



Distinguished from A. altipinnis and A. ballayi by the longer barbels, 

 and from the latter also by the longer occipital process. 



4 6. AUCHENOGLANIS ITURII. 



Steind. Sitzb. Ak. Wien, cxx. i. 1911, p. 1185, and Denkschr. Ak. Wien, lxxxix. 

 1913, p. 37, pi. ix. fig. 1. 



Depth of body 4 to 5f times in total length, length of head 3£ to 

 4-g- times. Head much depressed, 1^ to If times as long as broad, 

 smooth above ; snout broadly rounded, subtruncate, nearly \ length of 

 head ; occipital process long and narrow, in contact with the small 

 interneural plate, both of which are covered with skin ; eye superior, 



