Vol. XXVI, pp. 151-152 June 30, 1913 



PROCEEDINGS 



OF 'I'll I 



BIOLOGICAL SOCIETY OF WASHINGTON 



ON TWO NEW CHAR AC INS IN THE AMERICAN 



MUSEUM. 



BY JOHN TREADWELL NICHOLS. 



Of the numerous exotic fishes donated from time to time to 

 the Natural History Museum in New York, the following seem 

 not to have been described: 



Coelurichthys lateralis sp. now 



The type No. 4072, American Museum of Natural History, is 30 mm. 

 long tu base of caudal; depth, 3.5 in this measure; head, 3.9; eye, 2.7 in 

 head; snout, 5.0; end of maxillary from tip of snout, 2.5. Moderately 

 elongate and compressed, the dorsal and ventral outlines similar poster- 

 iorly, the dorsal straighter, more horizontal, anteriorly. Lower jaw pro- 

 jecting, maxillary vertical, to front of pupil. Snout very short; eye large; 

 nostrils separated by only a narrow partition. Several large pores on 

 side of head above. Dorsal origin equidistant from base of central caudal 

 rays and posterior margin of gill-cover. Its height contained about once 

 and a half in head. A small adipose present. Anal long, its origin dis- 

 tinctly in advance of that of dorsal. Yentrals to anal. Pectorals past 

 base of ventrals. Caudal forked, the lower lobe pointed (the upper lobe 

 broken). Dorsal, 9; anal, 31. Scales. 40; about 15 lengthwise series. 

 Lateral line incomplete, short, on about 6 scales. Our only other speci- 

 men, No. 4086, has the fins much broken, but in some other ways is 

 defter preserved than the type. It has cusped teeth in the upper jaw, 

 which seem to be arranged in two imperfect series, a few larger central 

 ones set further back than the others. About five small ones are situated 

 beyond the premaxillary-maxillary angle, [nside these five are about 

 five minute, more widelyspaced teeth. The lower jaw has a single series 

 of cusped teeth. The opercle has a rather broad membranous margin. 

 Gill membranes separate and free. A broad dusky lengthwise band on 

 the lower part of the side ; a narrow streak above it in the center of the 

 peduncle. Central caudal rays more or less dusky; tip of lower jaw 

 dusky. 



37— rr.oc. Biol. Soc. Wash., Vol. XXVI. 191 t. (i:,i) 



