400 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 
The first dorsal spine is concealed; the second spine is produced 
into a long filament, and is about 1.2 times as long as the distance 
between the tip of snout and anus in the type (more than 1.4 times 
that distance in a paratype). The second pectoral ray is similarly 
elongate, varying from one and three-fourths to almost two times 
the length to anus. The outer ventral ray, likewise produced, is 1.1 
times the length to anus in the type and one paratype, and but little 
shorter than the length of anus in the other paratype. The first 
dorsal and the paired fins all originate on about the same vertical. 
The distance from the anus to the ventral base is a little more than 
half the length of the head. 
Pyloric caeca in two specimens, 24 and 29. 
The color of the preserved specimens, from which nearly all of 
the scales have been lost, is light brown, with silvery reflections on 
the abdomen and the sides of the head. The exposed portion of the 
mandible is dusky. The branchiostegal membranes are brownish 
black, the gular membranes light. The buccal, branchial, and ab- 
dominal cavities are lined with brownish black membranes; the 
branchial cavity has a light margin on its outer wall, along the edge 
of the opercle and branchiostegal membranes; the walls of the buccal 
cavity are not light near the gape. The dorsal fins, including the pro- 
duced spine, are blackish, except on a narrow lighter basal streak; 
the anal fin is light anteriorly, becoming wholly dark, like the dorsal, 
posteriorly. The basal region of the paired fins is dark. 
Summary of the differences between Gadomus magnifilis and G. denticulatus. 
‘ 
G. magnifilis. G. denticulatus. 
Length of head?........ rein a dd sts ethane cease Sais cine on a eeeieimmet acter 20.61 20.53 to 0.56 
enpth oforbitgmeheadenss >see eee aae See ese a emcee Seater 24.65 24.2 to 4.3 
TONS hn OhOTDU LU SHOU bees ae) aerer eee aioe a nine ae cieeaeine sere eee = eet 21.3 21.05 to 1.15 
SWid thot miLeSror Ole ald NVOL DU seat ree eter nae cee 21.37 2O0y LO ae 
i Usvaveqrl obeyed oy 2120 [295 fo ane ne See GOSSon Gr BAUS COrbessu Shh ooocosacscr 20.335 | 20.285 to- 0.30 
Tet H8s 20. 2c staisceas oa se snes Bees eo See Oa acRE ee Receee eis meee (4) (5) 
Width of premaxillary band in suborbital...................-.--.-- 2. OR storms 31.25 to 1.65 
Distance from anus to base of ventral!............-.---2-..--------- 0.388 to 0.47 30.33 to 0.36 
Gillsrakers on lower limb’ of firstarchehaccee.) cone ees cee = ae 221 to 24 317 ~=to 21 
Heichtiof second! dorsal spine} so see eet eels ele aeons miei 31.185to 1.40 30.58 to 1.05 
en¢gih ofeecond! pectoral ray looser < aes aintniatasimininiele «im alam seal oa 31.70+to 1.95 30.93 to 1.41 
bene th oneuter: ventral pay tae sees ten seine cela efelalete epainieteisioiete=alate oie 3°. 97 tod. il 3.5r to - 86 
Buceal cavitiyteolores sss cos ~ es ccnccse = sete eee ee cece eeeen= sneer nee (6) (7) 
Number of pyloric Caccals 2. - oe aaa as aan sees aeenae ae aialeaie eine 3°24. to. 29 361 to 75 
1 Expressed in hundredths of length from tip of snout to anus. ¢ 
2TIn specimens over 100 mm. long to anus. 
2 Including smaller specimens. 
4 Distinguishable to unaided eye. 
5 Not distinguishable to unaided eye. 
6 Wholly dark. 
7 Lighter anteriorly. 
Although the preceding table indicates the marked differences be- 
tween G. magnifilis and its nearest relative, G. denticulatus, it is 
quite probable that it has been derived from that form. The three 
stations at which this species were dredged are all in the Jolo (Sulu) 
