ENTOMOSTRACA OF MINNESOTA. 137 
maxillipeds with a long claw longer than the preceding joint. First 
foot with the outer ramus nearly as long as the inner, two-jointed, 
bearing at the apex three pectinate sets. The basal joint bears a peec- 
tinate seta externally and a spine internally. The inner aspects of all 
the joints of both rami are spinous, the outer setose. The outer ramus 
of the second foot is two-jointed and has one pectinate seta apically, 
one spine internally and one spine externally, while the corresponding 
segment of the third foot has two pectinate sets apically and one 
internal seta and two external spines. The fourth foot has a minute 
one-jointed outer ramus bearing one long pectinate seta and a short 
external spine. The fifth foot seems to consist of one piece, armed as 
follows: Externally a conical projection near the base with a long 
simple seta, outer apical lobe (= the homologue of second joint) with 
five sets, the second and fourth of which are longer and pectinate; the 
inner apical lobe bears six (or five) setze, all but the innermost being 
pectinate. The two lobes are separated by a simple incision, and 
repeated examination showed no indication of any segmentation in 
either sex. The abdomen is very slender, and, like the thorax, its 
segments are all ornamented caudad with a series of spines or teeth. 
Stylet two and a half times as long as wide, with one or two small 
spines externally one third the length from the base and one longer 
spine near the middle of the inner margin, which is ciliate. The two 
median apical sete are fused at the base and the inner is three times 
as long as the outer, which is twice as long as the stylet. The inner 
apical seta is short, the outer obsolescent. 
In the male the antenna is reduced to a thick tumid member with 
the third and fourth segments greatly enlarged. The apical segment 
is furnished with three hook-like claws. Flagellum slender, of uni- 
formdiameter. Fifth foot has on the outer apical lobe four sets and a 
small spinule, and on the inner three non-pectinate sete. Caudal 
stylet greatly elongate, over four times as long as wide and nearly 
twice as long as the preceding segment. 
Marshia brevicaudata sp. n. 
PLATE XXXII, Fies. 6-13. 
The second speciesof this genus at present known may be described 
comparatively. Similar to M. albuquerquensis in most respects, but 
differing in a few points so far as known. The caudal stylets are 
short, about twice as long as broad, the longest seta being seven times 
the length of the stylet, while the outer median Seta is twice and a 
half as long as the stylet. These sete are not fused at the base. In 
the male the difference between the species is greater. The proportions 
of the stylet being the same as in the female, but the longest seta is 
perl 5 
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