48 CONTRIBUTIONS TO NORTII AMKKICAN ICHTHYOLOGY - IV. 



Caudal .-pine U times width of month. Spiracles very large. Color 

 nearly uniform Itrownish. L. s feet. < 'ape Cod to Florida; common. 

 (Perhaps includes in.nv than one species.) 



i;.ii,i < iitriira Milrhill, Trail*. Lit. A; 1'lnl. Sue. \. V. i, 17'.' : {'axlinm-a haxlata !>- 

 k.i\. N'i-w V.n-U Fauna, Fi-di.-. 373: '/'///</<> linxlulit ( Jiinl ln-r. \iii, -I7C.. 



I'pprr and lowi-r caudal 1-dds \vcll dt-vrl.ipi-d. 



<>*.. I>. sayi i I--- Snrnr'HMM'd. A 15ran. 



Disk rhomboidal, a little broader than long, the mu/zle moderately 

 prominent. Width of mouth contained about lU times in the length of 

 the snout. Tail with two well-developed folds, the lower fold consider- 

 ably the larger, both smaller than in I), diptcnirns. Tail slender, 

 Iiriekly. nearly twice as long as the disk: its s])ine extremely long; its 

 length I'A times the width of the mouth. Skin smooth in the young, 

 becoming ronghish with age. Several rather strong recurved spines 

 along the middle line of the back. Spiracles moderate. Buccal papilhe 

 5 (7). Color brownish. South Atlantic States to Hra/.il. 



l.'njii suit \.<- Siiriir, .louni. Ac-. Xal. Sri. 1'liila. 1~17. I'J : Tryyon xaiji Diuuc'ril, 

 Kla>iin)lir:iiirli. r.ii:!: Tri^nii jinxliintcii part < Jiint ln-r, viii. -17- 



<>:t. I), diplci-iiriis .Ionian A (iillx-it. 



Di>k rhomboid, slightly broader than long, anterior margins nearly 

 straight, meeting anteriorly in a very obtuse angle: posterior margins 

 curved: lateral angles rounded; tail nearly halt' longer than the disk, 

 \\ith a conspicuous cutaneous fold below and a smaller but evident one 

 above : jaws considerably arched ; biiccal papilla-. 'I; teeth H!. Young 

 perfectly smooth. Adult with a row of low but rather stout tubercles 

 on the median line of the scapular region and two others on the humeral 

 iv-ion. Tail \\ith small prickles. ( 'audal spine long, its length nearly 

 .". limes the \\idth uf the mouth. Color bluish brown, nearly plain. L. 

 (i feet ..r more. I'.ayofSan Die-o, California : abundant. 



'/''"-. .li.i-dan A (iill.rrt. I'm,-. I . S. Nat. Mus. |--<>. :;!.' 



i I. l>. liihri c iihiliiv i l.ar, -p. . (,,!, A 1',,-an. 



Di>k rhomboidal. a little broader than long: anterior borders scarcely 



ooncave, ihe posterior almost >traiuht: external angles rounded ; mux- 



/le pointed: tail below with a cutaneous fold, hi-he 1 ' and longer than 

 the upper fold, OOVered lor its posterior tuo thirds with small ossilica- 

 tioiis; tail nearl\ I'. 1 , limes leiiuth of disk. All the middle of the upper 

 -ni hoe 'd i he bods . from the posterior re-ion of the liead to the base 



