’ 
PHILIPPINE MACROUROID FISHES—GILBERT AND HUBBS. 525 
H. gracilis is widely separated from all other species of the genus 
with the exception of the recently described H. tenwis, from which 
species it differs in the circular form of the lens-shaped organ be- 
fore the anus; in the better development of the striations on the 
sides of the isthmus; in the less reduced character of the ill: rakers, 
and in the greater eneth of the barbel. 
Only the type-specimen is known. 
(gracilis, in reference to the slender form.) 
Subgenus HYMENOCEPHALUS Giglioli. 
45. HYMENOCEPHALUS LONGICEPS Smith and Radcliffe. 
Hymenocephalus longiceps SmMirH and Rapctiirre, Proc. U. S. Nat. Mus., 
vol. 48, 1912, p. 111, pl. 23, fig. 3. 
Hymenocephalus striatissimus WrBER, Die Fische der Siboga-Expedition, 
1913, p. 168 (specimen from Siboga station 38). 
list of stations. 
-.| Bottom | Number 
Albatross : Depthin : 
station. Locality: fathoms. | *empera-| of speci- 
5301.....- Ghinaisea mm earselon SkOn Gr ceee merece eee ele nicacineicia sis 1 
GBiiSseo6c Chnibee Seey ing ie Noe O SP Ceo oo one be boboaeooses cepecacceusesoe 1 
S40 Feeaee China uEee, OfinwestenneliniZOnsemerey-smoscsessaee seas ce sec 1 
1 
3 
1 
1 
1 
173 | 61.5 11 
P 162 52.4 1 
: Vicinity of Marinduque Island oenn 10% ees ee eee 1 
.| Off east coast of Mindoro.........-- Bees TS eoccerece 9 
5197 -| Vicinity of western Bohol....-.....- 174 54.3 1 
5411. -| Between Cebu and Bohol....--..---.-. 145 55.2 7 
fe DEG SB Slloacisc Oe eres ane wie ia do oe oie ene seca ee cmecee ce eae eile 162 54.8 3 
5453. -.... Ofvsouthesst)coas tiot Wuzonasmas aac eerste cise celeste ee cise 146) 5-ce cee 8 
A escola AG oer nae cision ajale oe Sete ate Se aes amo secret wesig IBS) iB oecccescs 2 
D459 Se eel el| weinieve (OO aR eee Ta SHI OD bien DORE COE Creu aaaS ceca aODE RE eanere 201 || -55 eds <e51< 23 
a Vi ese selooode CORRS He ae oean rote Cale e s Be one ee winwicie aw emcee pense 270 48.3 1 
DOOD. <reiacle Between Olona Ra wilel twas sees see ncaa cess eatar 243 62:3 1 
ODOC sashes Hee Gara aco baccagOCedebead cH ocounoaaddookocvesEpenuoomee 244 52.5 1 
5580...... Micinity/of Darvelub ay,n5 OL0eOe emcee sles seca een lala 162 55.8 5 
5621...... eae Gillolo and Makyan Islands (0° 15’ 00’’ N., 127° 24’ 35’’ Pas) loc bos HOOSE 2 
1 The data corresponding to the tag borne by this specimen is: station 5179, Apr. 9, 1908, As station 
5179 was occupied on Mar. 25, at a depth of only 37 fathoms, it seems likely that 5179 was written for 5197 
(occupied on Apr. 9). 
2 One of these specimens is the type of the species (Cat. No. 72928, U.S.N.M.). 
We have a few notes to add to the original description. 
The tail ends in a very long filament, the tip of which is broken 
off in the type; the head is contained about 6.5 times in the total 
length when the tail is entire. 
The posterior lens-shaped body, lying just before the anus, is 
unusually large in this species, being about half as wide as the pupil; 
