MICHIGAN ACADEMY OF SCIENCE. 
193 
Estheria morsei Packard. 
About fifty specimens (40520, 40522, 40523) were collected at De 
Witt, Nebraska, in 1896. 
Estheria setosa sp. nov. 
Female: Shell globose with prominent umbones at end of anterior 
third; dorsal margin straight for one third length of shell behind um- 
bones; anterior and posterior margins rounded. Thirteen lines of 
growth. The margin of the shell is armed with subequal setae which 
grow smaller toward anterior end, and several of the adjoining lines 
of growth may have similar setae, particularly at the posterior end. 
Coarse granular markings between the lines of growth, these are ar- 
ranged irregularly and are more abundant in each space toward the 
outer margin of the shell. 
Second antennae with 14 segments in the upper and 15 in the lower 
flagellum. Seventeen spinous processes occur along the back anterior 
to the telson. These have the following number of setae, beginning at 
the anterior end: 1, 1, 3, 5, 9, 9, 9, 9, 7, 7, 4, 3^3, 3, 3, 3, 1; all these 
setae are directed posteriorly and those on processes 2-10 are long and 
attenuate. Upper border of telson with thirteen unequal teeth in addi- 
tion to those at either end; two long setae near the proximal end. 
Caudal appendages slender, minutely denticulate on inner margin, 
proximal half setose on inner margin. 
Size of shell: length, 5.3; width, 2.3; height 3.2 mm. 
Fifteen females (40524, 40528) of this species were collected at De 
Witt, Nebraska, in 1896. No males were taken. The species resembles 
E. belfragei Packard in the number of segments in the antennal flagella, 
but differs from Packard’s species in the shape of the shell, the num- 
ber of lines of growth, and other particulars. The name setosa is given 
to it on account of the length of two setae which it bears near the proxi- 
mal end of the dorsal margin of the telson. 
Eulimnadia texana Packard. 
About two hundred individuals (40530, 40534, 40535) were taken at 
De Witt, Nebraska, in 1896. In these specimens the first antenna 
reaches to the second article of the flagellum of the second antenna. 
The flagella of the second antenna are S-to 10-segmented; there are from 
16 to 22 teeth on the dorsal border of the telson, and five lines of 
growth. 
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