PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 343 
(13) more than half, that of the head. The teeth are minute, in single 
rows, closely set in the jaws, somewhat stronger upon the blind side. 
A strong short spine above the snout, at the anterior termination of the 
ridge at the lower margin of the upper eye. Hence the specific name 
unicorns. 
The dorsal fin begins at the side of the preorbital spine, its anterior 
rays being slightly crowded over upon the blind side. It is composed 
of 73 to 75 simple rays. Its greatest height (13) is half the length of 
the head. 
The distance of the anal from the snout (33) is one-third of the stand- 
ard length. The number of rays is 60; their longest (13) equal in length 
to the longest dorsal rays. 
The caudal is pointed, triangular, subsessile; its length (22) twice that 
of the maxillary (11) and two-thirds the distance from the snout to the 
anal (33). The pectorals are inserted far below the lateral line. The 
pectoral of the colored side is twice as long (18) as the diameter of the 
eye, that of the blind side as long (13) as the longest dorsal rays. The 
former is composed of 10 rays, the latter of 4. 
The length of the ventrals (11) is half that of the caudal. They are 
asymmetrically placed, as is described under the generic diagnosis. 
Radial formula: D. 73-75; A. 60; P. 4 right, 10 left; L. lat. 40. 
Color ashy gray, with dark lateral line. Eyes black. 
CiErentan wm Der totaspeca Menara tees ayo te a oe eam la Sele minis Se nncaae oe 8 26,003. 
IER ESBS EEE EROS SASSO AOC OSE IONE Chae ees es irre ers aee eha ee oe pele sr EB aoe 870 and 871. 
Milli- | 100ths of 
meters. | length. 
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Body : 
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Head: 
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Distance trom snout); bo Upper Cy Oz s--s- t 222-26 2 - eben sc ea— esas se oppsiein ales |e secre 9 
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Length of snout ............ Leesa catiek cone lose sao che eheemar eee : 4 
ensih of muxillary py.d: ee Slee ete. dsse--b ef 11 
sMengubotemandibleses- 2 sncssece sacs ose ce- scene Eale : 13 
Diameter of orbit, longitudinal wes: wees 9 
Dorsal (spinous) : 
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(CURED IISA IOAN, op eceesoEboonQsoneee hr DAS DoSanGoL Cone can sab becunonoolIc Jor ceed psescspere 13 
Anal: 
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Caudal : 9 
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Pectoral: F 
Distance thom! SUOMbM ees sant. sete coos oer cee Ao scene ce sce saeco dan sacosee ss |cemsa-enc = 28 
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Ventral: by 
Distance from snout on colored side ...-.-----------------------ceneee- 2-2-2 |---- 2822 Fr 
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eee Se doris TD Ra SS EO I SS, 8 Bs PCT PN RS ee OEE eee EC ees ee 
