12 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [1885. 



nmbratilis. The species is a genuine Lythrurus, as stated by Gilbert, 

 and is closely related to N. ardens, differing in coloration, in the more 

 compressed form, and smaller eye. 



Young male, in life steel-blue, smutty above with dark spots ; a dark 

 curved bar on scapular region. Top of head dusky, flushed with rosy. 

 Caudal brick-red, with dark punctulations. Dorsal black, except at 

 base mesially. iSTo distinct black spot at its base in front. Pectorals, 

 ventrals, and anal dusky, the anal tinged with rosy. 



Females v^ery pale, plain greenish, with dark punctulations above 

 and at base of dorsal and anal. A dark dorsal streak ; a black scapu- 

 lar bar, as in the male. Dorsal and anal pale, with dusky cross-shades ; 

 darker in larger speeimens. Lat. 1. 40 (44 in type of umbratilis). 



Dei)th about 3f in length in females. 



13. Notropis megalops, Eaiinesqne. 



Common. The specimens taken here, as elsewhere in Iowa and Mis- 

 souri, are very slender in form. 



14. Phenacobius mirabilis, Girard. 



15. Hybopsis biguttatus, Kirtland. 



16. Semotilus atromaculatus, Mitchill. 



17. Lepomis humilis, Girard. 

 Very abundant in the quarry. 



In life, green above ; belly more or less orange, its hue vary^ing from 

 golden to red. Opercular flap large, surrounded by a broad whitish 

 margin. Posterior j^art of body and dorsal and caudal fins usually but 

 not always with some dark-green spots. Some of these are always 

 present on base of caudal. Some scattered spots of deep scarlet, about 

 as large as pupil on sides of body ; these usually very distinct. Opercle 

 with larger (orange) spots. Three narrow orange stripes across cheeks. 

 No blue on cheeks. Both dorsals broadly margined with orange. Cau- 

 dal dusky, reddish on lower lobe only. Anal deep-orange or golden, 

 darkest anteriorly. Ventrals a little paler ; pectorals pale. One speci- 

 men had, in life, only deep olive-green spots, the belly and lower flns 

 pale ; no red or orange anywhere. 



18. Lepomis cyanellus, Eafiuesquc. 



19. Boleosoma olmstedi maculatum, Agassiz. 

 D. IX — 13. Lat. 1.46. 



D. — Missouri River. 



The Missouri Eiver at Saint Joseph, Missouri, is shallow, muddy, full 

 of quicksands and snags, with a considerable current in places, the 

 bottom in such cases being hard ; in other places so charged with soft 

 mud as to render it impossible to haul the seine. The seining done by 

 us was on the Kansas shore, opposite the city. A few si>ecimen8 were 

 obtained from fishermen and a few others from a dirty slough. 



