542 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 
The pyloric caeca, as in the other Pacific species, are very numer- 
ous, and are branched. The center of the anus is placed well in 
advance of the anal origin, the interspace being about one-half of the 
distance between the anus and the ventral fin, or one-fifth the post- 
orbital length of the head. There is a small naked fossa between 
the ventral fins. 
The dorsal spine is without denticulations. 
The color in alcohol is silvery gray, clearest along the middle of 
trunk and tail, becoming brownish on the back, dusky on the opercles 
and gular membranes, and blackish between the ventrals and the 
anus. 
ee ¥, 
4 i) 
Ree P RR IDY 
Seis 
ROE Lica 
> 
e 
2 
Fig. 35.—MALACOCEPHALUS LUZONENSIS. TYPE. 
This species is well distinguished by its blunt, low snout, strong 
dentition, long barbel, uniform dusky fins, etc. In these diagnostic 
characters the four paratypes, which are in poor condition, agree 
with the holotype. 
Table of measurements in hundredths of length to anus. 
¥ 
Types. 
Luzon- | Nippon- Paratypes, hawaiiensis. 
ensis. ensis. 
ADU OSS) StalGNS 27. (ee oe Sse street ee Re £440 4967 41384 | 4134 4134 
Totalizenprh imum mbes 2 ees ese seo ae ies ee ee ee 1 406 340+ 330+ ~ 285+ 
LHsra¥ea sn OE TEL R EAGLE Ae a yeas awe see 56.5 77 69 | 66 53 
Length. of headii2: 2228 5 Soe 5 ee ee ee 89 92 85 | 84.5 86+ 
LONE THONOrDit -o Sues ests: eee Cee a eee eee 29 30.5 31 29 31 
Widthvofinterdrbitals Sree. ee ee 31 32 26 28 29 
Waidthiof SnpOnpita lenses sen eee omanee ene 10 11 10 9 9 
Orbit to; preopercle’s..c.t.seese oo ee ae ee eee 44 42 37 36 39 
Length olsnoutee:. sess see we. 2 eee eee 21 27 23 24.5 24 
Postorbitalilength:of head ss2 #322326) eer eel 42 43 35 36 36.5 
henpth of upper jawes. semen sac eee ea eee besos 48 47 40.5 40 42 
Length: of. barbelksvesocc etek 2c Sottero 18 15 13.5 16 | 
DEpUl Of DOMY:.cgiewccec anees .ne e cocie See eee eee Ow gles eet 74 71 84 
Width of bodiy )iges 28s os tech ee ee 45 45 44 42.5 39 
ANS TOVATIG! oreo cia, ovate a tae le, rere mem ee ee es Steed 9 17 7.5 10 9 
Amusjtoyventrallset.. 2. stress ele eee ee emia sey 2 15 17 4 17 17 16.5 
Ventralto isthmus.) = cen ee oe Se eee een ee 35 34 29 30 27 
Lenethroffirst dorsal pases. 22 sea eee coe 22 26 26 24.5 28 
1 A pseudocaudal developed. 
(/uzonensis, from the type locality.) 
