iy 
468 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
tipped spines. A spine-armed ridge in front of the eyes, over the top 
of the snout. In this four spines are conspicuous, one in front of each 
eye, and between these a larger pair, in front of the supraorbital ridges. 
From these last-mentioned spines extend spine-armed ridges along the 
upper margins of each orbit. Under the snout is a cavity containing a 
barbel, pedicelled, with thick, club-shaped, trilobate tip. On each side 
of this cavity are the nasal openings. 
The width of the mouth is equal to the distance between the centers 
of the pupils of the eyes, this being much less than in Halieutea stellata, 
in which the mouth is proportionally twice as large. The shape of the 
disk is less circular than in the Asiatic species, being intermediate be- 
tween this form and Halieutichthys. Other points by which H. stellata 
may be distinguished are the absence of the strong lateral spines of the 
disk; the slighter specialization of the carpal peduncles; the greater 
proportionate size of the disk, which occupies two-thirds of the entire 
length of the fish; the less immediately axillary position of the gill- 
openings; the less spiny armature of the body, the spines upon the 
margin being smaller and less crowded; and the entire absence of 
spines upon the ventral surface. 
D.6; A.4; C.8; P.13-15; V.5. Color reddish gray, whitish below. 
Measurements. 
CuLenumum DELO SPECIMEN ee aas sc ae Ease coisas = cea Sees ein eee eae een ee 26175. 
Wocality *-s22 - ffteeee S420 bbe eee d3 a5 56a Seogas Sc sa50 0380 Corb tio Sanne As sats Station 895. 
| 
Milli. | 100ths 
| meter's.| length. 
_ a — = 
) Und MONG GGG Ase eo sse se Baer Hoehne Goes So Speeder adancn Sed SdeSoontosddrsbensoad TAG) | Seceenee 
Mengthi tovaserofmiuddle caudal ayers. 2eeie--kies SS. Jase EE eRe ee ea aise 118 100 
Body: 
Greatest width ofidiskete3 Seb aes Eee ees... Se see ls Stet Ee. esther - cece 2 A5\(se d 50 
Length of disk (snout to lateral spine) ~ 47 
Length of disk (snout to angle of pectoral) ..- ae : 47 
easter htiOl&tail scceseek ceed saree als Se ied = dais siolecresic ce nee a aincie ce eck eee eee 5 
Lenstiver body (olltside ofthisk) 235532. 2 S2 sae Asad ot wae bee toe cin se see ele weer 40 
Head : 
Greatest length (tofbranchialtopening) 2: se ee nesee cheese cs sees = sees cee te ee see eee 39 
Waid thofiniteror Diba ames s 42.- cats he wad aoe mete elo a pads aan do ee ae ae Re ee eee el eee ee 8 
Thetis thi OMSUOUTALASS oS. Dassen e dees Cowes Sonne ee ee toes seine ser tae noes Seek teas ne 4 
Weadith otim omits. see = sais species canoes s/o eee e aloSeinese Soe ees be ete seria eee eenee 16 
en Sua Of mM AR Ar ye. oe ke oe A ee oe Se see eran saele aia cle he clcrae See ces eater er 5 9 
Wenth of man dubler: - cssslsasesacks <a ctcloc Geet fem kph: c aeroueets ee en eay eee er 10 
DI AMELEMOLMOLDIG wate e + eee he Se ee eee ee aera ea nace See cite coe aaron te eee ceca 8 
Dorsal : 
Distance aTrOMMSNOMbieas oc ceee estes ooe re ees seee esse ee see eee See eee eens ee, ae 60 
(Length of bases. a- <.--25-.< 5 Se 8 
Gregtes Oe oy settee mee see wee eee ee ee eet a ne ae io tn oe ees ae ne 2 14 
Wencthyofrostral barbell £22 ./-bigaays sons sass taal ~ tol Dos Pilot Saat o claesaae aoe 2 
Anal: 
Mistanceifrom: snout) q. = Lae rsssass lee ySe OS sess 4 Ae eee eter Ee ee oe 5S 2? 65 
CTR CDYVOTDASE 2.55, 5:2,0 212.2 tascteeele sicinae clerete a's cain "elstobe noes Sees oie sla esee ale eer nate <ioiss | <é 5 
Height at longest ray 14 
Caudal: 
Neneuhommid dle;raysicenac echo saieeeee eee ee eee Pete ee oe tt ee eS Seo kel ee ee 13 
Pectoral : 
Distance ofelbow from snout sss oe eee ee oe ee a ae eee ee ee Saeco 
STA OU Leer eee oP eta rc are acai clays Sietorwcttenenalel ee ee Sete othe eae SR ere ee ee ea Vp res ae 24 
Ventral : | 
Distance of itreemortion fromisnoute - Sh. cce- seen ees eee tesigee Sees Oe ae jeaghaseke z 
(Caudal..... 
Pectoral . 
WentTalsess.: 
9 
