358 PKOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 

 Dallia * geu. nov. Umbrldw. f 



Body oblong, covered with cycloid scales of small size with radiated 

 strife; lateral liue not conspicuous; eye smaller than in Umbra; cleft 

 of the mouth of moderate width. Ventrals inserted in front of the be- 

 ginning of the dorsal, composed of three rays. Basis of anal as long 

 as, or longer than, that of dorsal. Caudal fin rounded and many-rayed. 

 Villiform teeth on the intermaxillaries, the mandible, the vomer, and 

 the palatines. Pectoral rounded and many-rayed. 



Dallia pectoralis sp. nov. 



B. VII- VIII ; D. 12-14 ; A. 14-10 ; V. 3 ; P. 33-36 ; 0. 30-33. 



The height of the body is contained 4 to 4 J times in its length without 

 caudal ; length of head 4J to 4^ times. The eye is ^ to ^ as long as the 

 head. The pectoral is ^ as long as the head to end of upper jaw, the 

 ventrals ^ as long. The origin of the dorsal is twice as far from the 

 end of the snout as from the origin of the middle caudal rays. The 

 longest dorsal rays are a little more than half the length of the head. 

 The anal begins almost directly under the origin of the dorsal and has 

 nearly the same extent ; its longest rays equal or slightly exceed the 

 longest dorsal rays. The ventrals originate in advance of the dorsal 

 and can be made to reach to or slightly beyond tlie origin of the anal. 

 The vent is immediately in front of the beginning of the anal. About 

 77 scales in lateral line ; 11 rows between the dorsal and "the lateral line 

 and 11 between the lateral liue and the anal. 



Color. — Dusky brown mottled with whitish, all the fins similarly col- 

 ored, the dusky spots sometimes becoming confluent on the caudal and 

 simulating bands ; belly mainly whitish, but in some sf)ecimen8 thickly 

 covered with small dusky spots. 



LIST OF SPECIMENS. 



23498 a-g. (collector's number, 1430) 7 specimens. St. Michaels, Alaska, 



B. 8. Length 205 millime- 



Feb., 1877. L. M. Turner. 



23498 a. D. 13; A. 16; V. 3; P. 36; C. 33 



ters. 

 23498 b. D. 13; A. 14; V. 3; P. 33; 0. 31 



meters. 

 23498 c. D. 14; A. 15; V. 3; P. 33; C. 31 



ters. 

 23498 d. D. 14; A. 14; V. 3; P. 33; C. 30 



meters. 

 23498 e. D. 13; A. 14; V. 3; P. 35; 0. 30 



ters. 

 23498/. D. 14; A. 14; V. 3; P. 35; 0. 30 



ters. 



* Dedicated to Mr. W. H. Dall, of tlie United States Coast Survey, in nppreoiation 

 of his oontribnfions to tlio zoology of Alaska. 



B. 7-8. Length 200 milji- 

 B. 8. Length 180 millime- 

 B. 7-8. Length 184 milli- 

 B. 8. Length 175 milliine- 

 B. 8. Lencrth 170 millime- 



i 



