272 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
very slender, and flexible—in fact almost as limp as threads near the 
end of the tail. The vertebral bodies become longer and more atten- 
uated toward the end of the tail. 
Metre. 
Hatreme. length <<). 22:<ccss.caccet aes. Seem iaadee eels catene-se eee ee ee -47 
Body: 
Heightat branchial region of. oo ose. en wn oene soo ones see eee . 035 
Heieht 2b ARUG 25 <a taete tees cage ehasecgens eeadsetaes Usa oon - 025 
Height at commencement o& analfn: 225... 222-522. sees ee eee . 02 
Levgth of abdominal: cavity as2h2e2 ous ee Sein oe se eee . 05 
Cranium: 
ONgth 625... cee deseee nnecedieqnaneb tans eAekiss nas Jak/s ean Ko ee -015 
Water -lce «a ~ ja cate elas shole see plese eal ee anata os aeieiee = ee .015 
Inberorbital area s2 oi lens) {el elece s ceioess Has biocitbe classic eccs sata - O11 
Orbit, diameter... 5 oo. ane coe e once aban Sense e eee pee 
Jaw: ; 
Upper, length... 2-500 <n cejside dengue asl oc tabs cusleleese oe tee ap hehe ee 
Lower, length. <2 5 eccwqasab eed sans ccs aaseme os seaman eh os cp ene . 103 
Suspensorium, length .< 222. 22S ek cc eaciccee cece ence ee onan eee . 102 
Branchial aperture: 
Hrom anould os segs tess Sa See eos Bose ke seen oe iee ae a: 
Brom, dorsal ses sox aids awstats ce Woe Seen Seba teehee tee nee eee . 028 
Interbranchial isthmus, .Widthic. <. <6. ec-ae0mace cmiecea cum a seems eee eee - 0035 
Dorsal: 
EP TOM SNOUb cencacca,oah x = astosceyeacts oeyanse Seles aeetoctanic oie esa ase ee 
Don rest Tay... ssa sse eenecs cocecacs eens meee ee ene cae ens cae tent 
Anal: 
Brom (snot <cvslen tele ses eines esis cenclemioes ates wibvt.ce Japs hoes ate -175 
ONC OSt TAY oc 6k ia.c a dwis alewn os nie wisi a sieieinie sss saeco hice pie sisiciee aaa eer . 015 
Pectoral : 
Distance from branchial aperture..: <2. 52-25) c-2-sc cosas seme eee eae aoe ee 
Distance trom anus. .ss4ise cosas ce ae ba ciioemciases dee Set eee ence: eee . 04 
Distance fromsnomt \o-\acds cae occu cpditie eel ame ae wleece Beteee heen Seen 115 
Moen Pbhin p52. eins Se ee ak w wine ae aelcle ee ascige asic emer ee ts See ee - 0035 
Width: (at, Dase).< sac cten mga Sie waste cae asmaje sideleteaceiaisnaree cers ae Sea i ieee ears 
The vertebree of Gastrostomus Bairdii, as observed in the mutilated 
medium-sized specimen, are as follows: 
Total number ?s.9.52 22% Olu ilske sigtics els = dence eek -es sees Ontlea ae 97 
(The last two or three caudal are not distinguishable by dissection. i 
Wumber intervening between cranium and branchi@ ....-.-...----..-:..-..-- 16 
Number between branchiz and Vent).- - 22. (once cen ec aclnce c+ ac <3 sc ce eee eee 6 
Number in tail). 22 occ cc20 = cine cine ogee, ammarnasisne.e Sam snes en <1 50s oe rr 75 
Vertebral formula (approximately) 22 + 75.............-.. «0c anise ieaee arene 
The three specimens of this species secured were found at different 
times and in quite different depths of water, as will be seen from the | 
following exhibit: 
N. M. Nos. Station. | Latitude. | Longitude. | Fathoms. 
° ‘ “a ° ‘ au” 
BeOS yee eciactoeenl ose eccae capac tances chatecuces serene 2047 | 40 02 30/68 49 40 389 
OO eUD nha 'scmas nachos emaicicidies nam ciamiarinn Mate hieeeieim se miote iaes 2043 | 39 49 00/ 68 28 30 1, 467 
BUDOO Mao nncneipaebaianiocas maw oeiseusie eae name ae shee eee melae 2074 | 41 43 00) 65 15 20 1, 309 
