ADDENDA 22. M YLIOBATID^ — STOASODON. 
879 
tail with a median row of 22 to 29 large spines; tail with a marginal 
row of large spines ; rest of disk mostly smooth. Lower surface smooth, 
except an elliptical area below tip of snout. L. 3 feet. Unalashka, 
Alaska. [Bean.) 
(Bean, Proc. U. S. Nat. Mus. iv, 157, 1881.) 
On pages 47 and G5, instead of ^‘•Basxjatis Eafinesque” or ^^Basibatis 
Walbaum,” read : 
40.— TRY«0]V Adanson. 
(Adanson MSS.; Geoffrey St. Hilaire, Descr. Egypte Poiss. 1809, 219: type Tnjgon 
hjmma St. Hil. = liaia pastinaca L.) 
The name Trygon seems to be prior to Dasyatis Eaf. (1810); the 
earlier JDasybatns of Walbaum included all the rays, and is therefore 
liroperly a synonym of Baia L. The name Trygon is from Tpuyd)'^^ a 
turtle-dove. alarum expansarum simiUtndine. Sunt qui columbani 
marinam appellant'’'’ (Rondelet, de Piscibns, 332, 1554). 
The North American species of Trygon should stand as follows : 
61. T. cenfraira (Mitch.) Liusley. 
61 (6). T. hastata (Dekay) Storer. 
62. T. sayi (Lo Sueur) M. «fe H. 
The specimen described on page 48 as Dasyatis sayV’ is the young 
of T. sabina. 
63. T. dipteraira Jor. & Gilb. 
64. T. tuberculata (Lac.) Dum. 
6.5. T. sabina Le S. 
Page 50. Instead of Aetobatis read: 
41.— STOASODON Cantor. 
{Aetohatis Muller & Henle, Plagiostoraen, 1841, 179: not of Blainvillo, Bull. Soc. Phi- 
lom. 1816, 112 {=MyUohatis)‘. Stoaaodon Cantor, Catalogue Malayan Fishes, 
1850, 1416: type liaia varinari Euphr.) 
As the type of Aetobatis Blainv. was Raia aquila L., the use of the 
same name for a different genus is not allowable, (tfroa?, arch; 6doh<;^ 
tooth.) Our species should stand as — 
66. S. narinari (Euphrasen) Cantor. 
Stoasodon laticeps (Gill) J. & G. {Aetobatis laticeps Gill, Ann. Lyc. 
Nat. Hist. N. Y. 1865, 137 = Aetobatis latirostris Gunther, Fish. Centr. 
