255.4% in S. tanganaicae) (Figs. 3A, 4C,D).
Synodontis granulosus can be further distinguished
from S. dhonti by having a greater number of mandibu-
lar teeth (28-51 vs. 22 in S. dhonti) and a larger eye
(31.2-50.2% of snout length vs. 23.1% in S. dhonti).
 Synodontis granulosus differs from S.
multipunctatus and S. grandiops in lacking large spots
on the body, having a higher number of mandibular teeth
(28-51 vs. 13-29 in S. multipunctatus and 17-26 in S.
grandiops), a smaller eye (31.2-50.2% of snout length
vs. 44.9-62.0% in S. multipunctatus and 64.2-81.0% in
S. grandiops), an occipito-nuchal shield which is not
covered by skin, and body skin which is covered by
granular papillae. Synodontis granulosus is distin-
guished from S. petricola and further separated from
S. lucipinnis by lacking large spots on the body and
secondary branches on the medial mandibular barbel,
having a large axillary pore (vs. very small in S. petricola,
absent in S. lucipinnis), dark fin spines, 7-8 pectoral-fin
rays (vs. 8-9 in S. petricola and S. lucipinnis), an unin-
terrupted premaxillary toothpad, much larger body size
(maximum TL 270 mm vs. 135 mm in S. petricola, 100
mm in S. lucipinnis), an occipito-nuchal shield which is
not covered by skin, and skin which is covered by granular
papillae.


BULLETIN FLORIDA MUSEUM NATURAL HISTORY VOL. 46(4)

 Description. Morphometric and meristic data in
 Table 5. Maximum TL 270 mm, SL 216 mm. Body
 compressed laterally. Predorsal profile straight, inter-
 rupted by convex ridge formed by orbit of eye. Preanal
 profile straight to gently convex. Skin on body forming
 numerous vertical folds covered with granular papillae
 extending onto all fins.
 Head depressed and broad; skin covered with
 granular papillae. Snout with bluntly rounded margin
 when viewed laterally and dorsally. Anterior nostrils
 tubular; posterior nostrils with semicircular flaps of skin
 along anterior margin. Occipito-nuchal shield rugose,
 not covered with skin; terminating posteriorly with nar-
 row, rounded process on either side of dorsal spine; ven-
 trally with narrow, bluntly pointed process that extends
 to upper margin of humeral process on either side of
 body. Eye dorsolateral; ovoid; horizontal axis longer.
 Interorbital area flat.
 Mouth subterminal; lips wide and papillate. Man-
 dibular teeth 28-51, short, unicuspid; arranged in single
 transverse row. Premaxillary toothpad uninterrupted;
 primary, secondary and tertiary premaxillary teeth dis-
 crete; numerous; arranged in 4, 4, and 2 irregular rows,
 respectively.
 Maxillary barbel with narrow basal membrane;


Figure 11. Synodontis granulosus, UF 160945, 192 mm TL, 149 mm SL.