. Bulletin - United States National Museum. l in length with upper rays. Ventral longer than pec-toral, reaches anal. Coloration uniform. 76 BULLETIN 100, UNITED STATES NATIONAL MUSEUM A genus of peristediids known by its greatly developed spines, asfrontal, supraorbital, occipital, opercular and preopercular pairs, be-sides the spiny series on the body and all more or less rugose all the barbels small and anterior simple. Very conspicuous anddistinctive are the exceptionally long pair of occipital spines, well-inclined back. (ciKavda, spine-\-aT7]dlov, from Peristedion.) ACANTHOS
. Bulletin - United States National Museum. l in length with upper rays. Ventral longer than pec-toral, reaches anal. Coloration uniform. 76 BULLETIN 100, UNITED STATES NATIONAL MUSEUM A genus of peristediids known by its greatly developed spines, asfrontal, supraorbital, occipital, opercular and preopercular pairs, be-sides the spiny series on the body and all more or less rugose all the barbels small and anterior simple. Very conspicuous anddistinctive are the exceptionally long pair of occipital spines, well-inclined back. (ciKavda, spine-\-aT7]dlov, from Peristedion.) ACANTHOSTEDION RUGOSUM, new speciesFigure 17 Depth 5 in body as measured from snout tip inside rostral extensions;head 1%, width 1%. Snout 2y2 in head; eye 5, 2 in snout, 1 ininterorbital; maxillary extends halfway to eye, length 7% in head;mouth width 3%; anterior mandibular barbel 7, posterior 2%,front pair simple; mouth edentulous; interorbital 4%, concavely de-pressed. Gill rakers 8+20?, finely lanceolate, over twice gill filamentsor 2 in Figure 17.—Acanthostedion rugosum, new species: Type ( No. 99501). Pair of long isosceles triangular extensions, flat or depressed, moder-ately wide interspace about % to % of basal width of either exten-sion ; large postero-supraorbital spine half of eye diameter in length,its front edge finely serrated; very long, strong, inclined occipitalspine 1 + Ys times eye diameter, extends back to base of last dorsalspine; opercular spine moderate or small, without distinct keel for- NEW PHILIPPINE FISHES—FOWLEK 77 ward; keel of suborbital stay with undulous and very finely serratededge and ends behind in long extended spine nearly long as eye. Beginning over gill opening 29+1 bony lateral plates; 4 rows of di-minishing spiniferous plates on trunk; spines all quite large, strong,well erected, and surfaces of plates finely rugose; bones of head all wellstriate on upper surfaces, rugose on cranium and most of bony ridgesof head minutely se
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
