372 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 
1. COMPARISON WITH OTHER FAUNAS. 
For the purpose of our faunal analysis there are three other 
regions suitable for comparative study in this family; these com- 
parable faunas are the Indian, the Japanese, and the Hawaiian. 
As might be expected, these four faunas are more closely related 
to each other than they are to the fauna of the eastern and northern 
Pacific, or to that of the northern Atlantic, the other regions where 
an extensive exploration of the continental shelf has been made. 
But few of the many species of Macrouroid fishes belonging to ~ 
the East Indian-Philippine fauna are known in other regions. 
Careful comparison has led us to conclude that not one of these 
species is known about the Hawaiian Islands. Four of the species 
are identified by us with Indian forms, without actual comparison 
of material in any case. These are: Bathygadus furvescens, Bathy- 
gadus multifilis (%), Ventrifossa petersonii (*%), and Lionurus 
pumiliceps.. Eight species are identified as also Japanese: Gado- 
mus multifilis, *Coelorhynchus parallelus, *Hymenocephalus s. 
striatissimus, *“Ventrifossa misakia, Lionurus proximus, *L. spino- 
sus, Trachonurus villosus, and Cetonurus robustus,; but those above 
starred are known in the Philippines only from a few young speci- 
mens taken in eastern Luzon, and the material was too inadequate, 
except in the case of the Hymenocephalus, to make their identifica- 
tion certain. 
Although so few of the species are identified with those of other 
faunas, many are represented in the three other regions by very 
closely allied or geminate species, as listed in the following tables 
(from which all notably distinct species are excluded). 
1. Table indicating the geminate species occurring in the East Indian-Phil- 
ippine region and about the Hawaiian Islands. 
East Indian-Philippine species. Hawaiian species. 
Bathyqadus:spongiceps 2. . sc. os Geen e eae wees eee eee ses = ee aaa | B. bowersi. 
Gadomus MmiuLltifilis 3222.2 S36 5 .doek cass ee ee eee | G. melanopterus. 
ELYMENOCEPHOULS) QTUCIIIS. «= - 5 Sona. n ces ere ee ale ele eae Sete oles © erent efor | H, tenuis. 
FIV IMENOCEDRAUULS NASCENS « c. oun vain cann nee Sen ee EEE eee eens oe. eae eee | H. striatulus. 
TAORUTUS DUMMIES Me co. oon | oS eee ee eee eee ee eee L. gibber. 
Mataeocephalus nigrescens 5... . 2.222 --d-2coe nce n econ eee esse ceceseeeseee=| MM, acipenserinus. 
Trachowur ts villOsus ©. 5 .csckee's sc ew ee Gee ee ene See soem T. sentipellis. 
1It is possible that Coelorhynchus parallelus and Malacocephalus laevis, or allied forms 
of these. should be included. 
2? Very close also to B. coftoides from near New Zealand and the Kermadec Islands. 
3 Occurs also in Japan and probably in the Indian Ocean. 
4 Occurs also in the Indian Ocean. 
5 Very close also to M. tenuicauda of the Panama fauna. 
6 Occurs also in Japan; close also to Atlantic species. 
