32 CRUSTACEA OF ALABAMA. 



Cypris grandis, chambers. 



Bulletin U. S. Geol. Surv. (No. ?) Art. IX. 



" Valve oblong, slightly sub-reniform, highest behind the middle, sloping thence regularly toward the 

 anterior end, with a slight bulge on the hinge-margin just where it rounds off in front. Greatest thickness 

 about the middle. In side- view somewhat resembling Brady's figure of C. tessalata, but this species is longer 

 in proportion to height and has the highest point of the dorsal margin a little further behind. Ventral margin 

 very slightly emarginate. In dorsal and ventral view, somewhat resembling Brady's figure of Macrocypris 

 minna. Right valve slightly overlapping the left; surface smooth, with minute punctures and short hairs, but 

 with a group of scattered, large, sordid, yellowish punctures about the middle of each valve. Color, bluish- 

 white, sometimes with pale greenish tinge. Basal joint of superior antennas, with two short seta? above and 

 one below, second joint with a single short one below, third with two short unequal setae above and one below, 

 fourth with two short setae above and two long ones bdow, fifth as the fourth, sixth with two short setae above 

 and four long ones below, seventh with two long and two shorter setae. Inferior antennas with one moderate- 

 ly long and two short claws, and two seta; from the end of the last ioint, and with four long claws (one shorter 

 than the other three) and two moderately long setas and one long one from the end of the penultimate joint. 

 Post-abdominal ramus similar to that of C. incongruens, as figured by Brady, but longer, 

 having three unequal setas, the terminal one longest. . . . Length, one-seventh inch, height, 



one-twelfth, thickness one-eighteenth. Lucid spots indistinct, about nine, the two anterior obliquely trans- 

 verse and long, the two posterior small. Abundant in ponds along the Upper Arkansas river, in the Mount 

 Harvard region at an altitude of 8,000 feet." 



CvpriS mOIlS, Chambers. 



Bull. U. S Geol. Surv. (No. ?) Art. IX. 



"Ovoid ; tumid ; highest immediately before the middle. Length, one-twenty-sixth inch, height one fifty- 

 seventh inch. Dorsal margin regularly arched, sloping more rapiely behind the highest point than before it. 

 Extremities rounded; the anterior widest; ventral margin very slightly sinuated. Seen from above, ovate, but 

 less tumid than Cypridopsis vidua as figured by Brady. But little or not at all narrowed in front , widest a 

 trifle behind the middle. Lucid spots, seven, near the middle of the valve; the three lower ones in a line and 

 small ; one of them very small. Valves white, shining, smooth, with numerous almost confluent punctas. 

 The setas of the lower antennae extend beyond the apex of the claws, and the articulate appendage of the 

 third joint has its apex swollen or enlarged. Superior antennas with two long and one short seta from the end 

 of the fourth joint ; two from the end of the fifth joint; four long ones from the end of the sixth; two long 

 and two short from the end of the seventh. The last joint of the inferior antennas is small, almost rudiment- 

 ary, bearing a single large claw. (Indeed it seems to be bifid with a claw from each branch.) There are three 

 other claws articulated to the end of the penultimate joint, from which also arise four setas shorter than the 

 claws. . ... Abdominal rami straight, slender, each with two claws,, one under the other. Pond 



on Mount Elbert; aliitude about 11,000 feet." 



The following species are perhaps too imperfectly described to trouble synonomy. 



C. agilis, Haldeman, Proc. Phila. Acad., 1841. 



C. discolor, Haldeman, Proc. Phila. Acad.-, 1842. 



C. hispida, DeKay, Nat. Hist. N. Y., VI, 1844. 



C. neglecta, Herrick, 7th Rep. Geol. Minn., 1879. 



C. scabra, Haldeman, Proc. Phila. Acad., 1842. 



C. simplex, Haldeman, Proc. Phila. Acad., 1841. 



C. vitrea, Haldeman, Proc. Phila. Acad., 1842. 



