. Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History). British Museum (Natural History); Fishes; Freshwater animals. 270 SILURID^. i. GYMNALLABES. Giinth. Ann. & Mag. N. H. (3) xx. 1867, p. Ill ; Bouleng. Proc. Zool. Soc. 1907, p. 1093. Degraded, anguilliform Clarias, with the sides of the head unpro- tected by bone, even the postorbital shield being absent, the pectoral and ventral fins very small, no free border to the eye, and the dorsal and anal completely united with the caudal. A single species. 1. GYMNALLABES TYPUS. Giintb. 1. c. pi. ii. fig. A; Bou
. Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History). British Museum (Natural History); Fishes; Freshwater animals. 270 SILURID^. i. GYMNALLABES. Giinth. Ann. & Mag. N. H. (3) xx. 1867, p. Ill ; Bouleng. Proc. Zool. Soc. 1907, p. 1093. Degraded, anguilliform Clarias, with the sides of the head unpro- tected by bone, even the postorbital shield being absent, the pectoral and ventral fins very small, no free border to the eye, and the dorsal and anal completely united with the caudal. A single species. 1. GYMNALLABES TYPUS. Giintb. 1. c. pi. ii. fig. A; Bouleng. 1. c. Depth of body 14 to 15 times in total length, length of head 1\ to 8^ times. Head about \\ times as long as broad, the width of the bony part, in the middle, \ to \ width of head; occipital process acutely pointed; eye very small; interorbital width less than width of mouth, about f length of head ; band of prsemaxillary teeth 3 to 3 J times as long as bro&d ; vomerine teeth pointed, forming a crescentic band which is narrower than the prsemaxillary band; a much developed lobe at the angle of the mouth; nasal barbel § to f length of head ; maxillary Fig. 224. mi »«R~- — ^3;: ^SS^^^j^^^^^^^jji. Dorsal 98-110, Gymnallahes typits. Type, after Giintber (I. c). i. barbel a little longer than head ; inner mandibular barbel § to § length of head, outer a little shorter than head. Gill-rakers moderately long, 10 on anterior arch. Clavicles hidden under the skin. its distance from occipital process f to f length of head. Anal 82-88. Dorsal and anal completely united with caudal, which is § to £ length of head. Pectoral % to f length of head, with a very short smooth spine. Ventral 2 to 2| times as distant from root of caudal as from end of snout. Uniform blackish brown, lighter brown on the belly. Total length 230 millim. Lower Niger and Old Calabar. 1-2. Types. 3. Ad. Old Calabar. Ossomari, S. Nigeria. Dr. W. J. Ansorge (C).. Please note that these images are e
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