336 Dr. A. S. Packard on new North-American Phyllopoda. 



LlMNADIAD^. 



Limnadia texana, n. sp. — Eyes double, but with the inner 

 edges contiguous ; pyriform tubercle behind them one half as 

 large as the eye-bearing prominence ; 20 segments behind the 

 forehead, including the telson ; 15 pairs of feet. Antennae with 

 8 joints on each branch, tlie seventh and eighth joints subdi- 

 vided each into two subjoints ; the sette slightly plumose on the 

 basal joints. Telson Avith IG fine teeth, not including the ter- 

 minal acute spine. Caudal lamellae long and slender, cultriform; 

 under edge slightly curved, fringed with long hairs, those at the 

 base slightly plumose ; the upper edge straight ; end blunt. 

 Carapace-valves rounded oval, pure white ; 5 lines of growth ; 

 shells minutely dotted, the markings being coarser at the pos- 

 terior end of the shell and about the region of the adductor 

 muscle. Length of shell "27, breadth '16 inch. It is much 

 longer and narrower than L. americana, Morse, and with a less 

 number of lines of growth, the latter having 18 ; in this respect 

 it is much nearer 1j. Hermanni of Europe, though the shell is 

 much narrower. Compared with Baird's figure of Z. antillarum 

 from San Domingo, to which our species is nearest allied, the 

 shell is more rouiuled ovate at each end, being somewhat 

 truncated. While the ends of the caudal stylets are said in L. 

 antillarum to be " somewhat curved, sharp-pointed, and slightly 

 serrated on upper edge," the tip in our s])ecies is blunt, smooth 

 on the ujiper edge, and ends in a slight hook. L. antilhirum 

 is also said to have 9 joints to the rami of the second antenna', 

 and 1 8 pairs of feet. 



One specimen, Waco, Texas. " Quite common in many places 

 in Western Texas in the early spring. It occurs in muddy pools 

 made after rains, and totally disappears with the first drpng 

 of the pools. As far as I have seen, they are only found in the 

 woody bottom lands, and always near creeks. It occurred in 

 the same pool as Si reptocephaliisy (G. W. Belfragt.) 



Estheria Bclfraijci^ n. sp. — Rami of the anterior antennae with 

 16 joints ; 17 pairs of dorsal spines, exclusive of those on the 

 telson, which are lo in number (in E. mexicana they are mucii 

 more numerous) and the middle one is much larger than those 

 near it. The spines on the telson are fewer in number and 

 larger than Claus represents in E. mexicana ; caudal stylets 

 longer and slenderer than in E. mexicana, and the terminal 

 spine is longer and slenderer, judging from Claus's figure. 



Carapace-valves witii the umbones situated at the anterior 

 third of the shell ; dorsal edge straight Ix^hind the umbones, 

 slightly serrate, bent rather suddenly downward at two thirds 

 of the distance from the umbones to the posterior end, the end 



