PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 349 
Milli- 100ths of 
meters. length. 
LISTEN JETTED odoce Jo SoU Ce ORE CRORES E DORE ECE SOS CC EES EEOC CECE OEE Perse teem 54 eee ae eees: 
ienenigorrnvon middleicaudal ray s'- 52.5. sccsdecses sce sccc notes snccece cose 46 100 
Body: 
Greaes Neen Wee anaaeeas ow nm cess pos cetae cet cc see cana anise se setes eee eee ee Be eeae seen 12 
Re onpBOShanvaG ihe op. cesdae oot ee citaates Pop ca seCb e Sok oinig Uae aero Janae wine lace maconse 11 
MeanimorelMsu t GAM ccs = San coe ols eae anaes ce ceed oe Ine tee ee [e nese 5 
Head: - 
Greatestilentihy. .-2-2se<sesc--cccoees POSS CT OCC ESS CHES DORE ABS ACepasESddeeey saobeesoes 30 
Grestes tildes 4 Aah noe Scan ce tania Sopa aipectce < doce fo ceaoecmaseuccau|assccisinn< 13 
NAYES OL GAL TOPE SREY GOVE ET ECE gah sete sate genes Sh a i ra [et 2 
LLGH GIA GH STOUT. 2c ce See Cnee SS oH OC OOPS PEDO B De SEs Ape aco aur G see mee aise] [vee eee See 10 
Hen SiMOtmMaxilaryvess sess csska tases a<<s ss sss coe tes encteersn teen aeacaanec|edenceease 13 
Diameter oorbhit,longitudinall~- jc see scecestee isos: 4 hes lea cea gees semis|sineee-see 10 
Dorsal (spinous) : 
IDIStANCEMEAMAGNOU brs. ct tiecaeersssSet - Sasa sefoce seb ete ase Se fo so Sethe n sae deiesOileesa-eeeet 35 
Wen COO ta DAS eee emeinc a Relate sainice = Seieh sates aoe cieiee foicies cisene ates ak ces cael sc stenuiace 8 
GESTURE DOC co oce none Sct ARBOR SNORE: ASEM SE NES ESEE AE meant SSeS ase arrerserae re eae eee 10 
Dorsal (soft): 
ILGiySid i Gil WHE. cosco castes GSsBOcCR eS SSS SBR ESAS DESEO SSE SS ce ee De SOSe Sue Sse Daseeosnse 40 
Beret MUON SB Sb a Vetanctem eietsia- 4 ads a siacine aise dase seas ceescecmecesceeosee|cecoseeees 11 
Distance from snout 48 
Henethopase:. 6. Sos se eo st sane 48 
Height at longest ray 10 
Caudal: 
MENS OtenHOAOLOMAYS pec sae sais t sessile ac tess ose vecivs one puoi s ce deorccwosdlecenc secon 18 
Pectoral: 
Wistance: from’ snout Sst -- 3). 25s... ese ccccus Letimob tema cee See a ose Uae eeu|bedeo ose 33 
SEO a eee ete etele ore abe oferta oe ane eicine cinacw cots sia een carne Soectube ceeb ee boscactoss 10 
Ventral: 
ISA CE TOMS OW leat eeeeemna a sivwa ccc bees case oe cc eee hae see IES ae 23 
LEBIE TO L xtdaoAcds 046 SaBBB 6 2BE LOSE He rire ety ae ee eee ane One ae eee) ree 14 
TDYESESAN eA SESS AS ARES oes see ce Se eR Se a aig rc pa VI-[VU}, 17 
INTENSE SEES SNS ect eae lle ee a ke ( 16 
Vcr eee eee ee EE Te cae CREE CUE eK ee mane bee ak bare ctlkccecenes 6 
Nim perotescaesnueldperdl linpaset=e atin neck uaceec cachet ecenecee en ee eee ttle Ae [58] 
Peristedium miniatum, new species. 
Total length of type (No. 26023) 300 millimeters. 
The greatest width of the body (20) is equal to its greatest height 
(19.5), being one-fifth of its total length without caudal. The general 
armature of the body is much like that described by Giinther under 
Peristethus brevirostre.* The number of plates between the gill-opening 
and the base of the tail is from twenty-seven to twenty-nine. There are 
four series of spiny plates on each side, the spines of the abdominal 
series becoming very weak and obsolete towards the tip of the tail. 
The length of the head (40.15) is two-fifths of the total length without 
caudal. The length of the preorbital processes (7) is contained about 
three times and one-half in the distance from their extremities to the 
anterior margin of the orbit. The interorbital space is deeply concave, 
its width (6.75) contained between six and seven times in the length of 
the head. Protuberance on the forehead very slight. The length of 
the snout (22.5) is more than half that of the head (in young less). The 
diameter of the eye (65) is contained between six and seven times in the 
length of the head. There is one pair of spines upon the upper surface 
of the snout behind the base of the preorbital processes, and another 
larger pair upon the preorbital processes, one upon each. The ridge of 
the preoperculum terminates in a depressed, short, sharp-pointed spine. 
The number of small tentacles upon either side of the lower jaw is about 
* Cat. Fish. Brit. Mus. ii, 1860, p. 218. 
