FISHES OF HAWAIIAN ISLANDS. 
613 
Family MACRORHAMPHOSIDAi. 
Macrorhamphosus hawaiiensis, new species. Fig. 237. 
Type, 42 mm. long, from station 3940, near Laysan Island, depth 59 to 70 fathoms; type, No. 51618, 
U. S. Nat. Mas. 
Length of head 49 hundredths of total length to base of caudal; length of snout 28; diameter of 
orbit 8; interorbital width over middle of eye 7; greatest depth of body 22; distance from tip of snout 
to dorsal 68; length of second dorsal spine 23; base of second dorsal 6. D. v-12; A. 18, the last ray 
cleft to the base; P. 15. 
Most nearly related to M. japonicus (Gunther) and M. gracilis (Lowe), the form more slender than 
in M. scolopax (Linnaeus) or M. sagifue J ordan & Starks, the dorsal spine with very small spinelets 
along its posterior edge, perhaps smooth in adults; predorsal plate broader and less compressed than 
in M. sagifue, and top of head covered with coarser scales, the crests of which form sharply marked 
ridges; second dorsal spine compressed and strongly ridged, its tip reaching middle of soft dorsal, its 
length two-fifths the distance from gill-opening to base of caudal; in a smaller cotype, 25 mm. long, 
the spine reaches the second or third soft dorsal ray; ridges on top and sides of head show little or no 
trace of serration. 
Color dark slate on back and top of head, bright silvery elsewhere. 
Two specimens known from station 3940. 
Family SYNGNATHID£. 
Ichthyocampus erythrseus, new species. Fig. 238. 
Type, 55 mm. long, from station 3847, taken with the tangles at a depth of 23 to 24 fathoms off the 
south coast of Molokai; type, No. 51548, IT. S. Nat. Mus. 
