378 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 
D. THE BAST COAST OF LUZON. 
In the Philippine subregion, already discussed, we find among 40 
species present only two species which occur also in Japan. On 
the east coast of Luzon, however, out of a total of but 20 species 
known to inhabit that region 5 species are also found in Japan. 
Of these five species but one or two? occur in the East Indies and 
none belong to the fauna of the Philippine subregion.. The 
typical Japanese subspecies of //ymenocephalus — striatissimus 
ranges southward to eastern cae but is exclusively represented 
in the Philppine subregion by //. s. torvus. The most remarkable 
of all Macrouroid fishes, J/ae Sey ee inflaticeps, Which is known 
only from the type dredged off eastern Luzon, finds its sole ally in 
Squalogadus modificatus of Japan. The four species which range 
from the Kast Indies as far north as northern Luzon occur on both 
coasts of that island. Of the 10 remaining species of eastern Luzon, 
6 are found also both in the Philippine and the East Indian sub- 
regions, while one specimen each of 4 species were obtained, two of 
which are characteristic of the Philippine subregion, one is charac- 
teristic of the East Indian subregion, and a fourth is known else- 
where only from northern Luzon. 
E. NORTHERN AND NORTHWESTERN LUZON. 
The seven species known from this region show wee following 
relationships: 
1. Coryphacnoides microps, known also from southeastern Luzon. 
Coelorhynchus dorsalis, unknown elsewhere, but representing 
the C. notatus group of the Philippine and East Indian subregions. 
3. Coelorhynchus cingulatus, a very distinct species known also 
from Formosa. 
4. Coelorhynchus weberi, more closely related to C. productus and 
C’. anatirostris of Japan than to any of the numerous species occur- 
ring to the southward. 
5. Hymenocephalus striatissimus, intergrades between H. 8. stria- 
tissimus of Japan, Formosa, and eastern Luzon, and ZZ. s. torvus of 
the Philippine subregion.? 
6 and 7. Hymenocephalus longiceps and Ventrifossa divergens, 
known throughout the region both to the northward and the south- 
ward. 
F. FORMOSA. 
In addition to Coclorhynchus cingulatus and to Hymenocephalus 
s. striatissimus, discussed in the preceding section, there are known 
from about Formosa but two species, Lymenocephalus longiceps and 
Ventrifossa nigrodorsalis, species of wide range to the southward. 
1 Bathygadus multifilis and perhaps Coelorhynchus parallels. 
2 One specimen of Malacocephalus luzonensis was obtained off western Luzon within the 
range of these intergrades. 
