THE WATER FLEAS U J..\l )( ki:r.\) 



80 (8i) Mucro shorter than claws and process bearing I hem. 



Bosmina uhlusiroslris Sars 1861. 



Frontal sense-hair near junction of antennules. Antcnnuks shorter than Icnclh of v«lv« 

 bhell reticulated or smooth. Length, y, 0.3-0.5 mm. 



In pools and lakes; not rare; very variabie. 



U. 



ft ^1 



0.1 MM. , 



Figs. 1097, 1097, a. Bosmina obtusiroslris. 



81 (80) Mucro longer than claws and process. 



Bosmina loni^ispittii Ix*ydig i860. 



Frontal scnsc-hair nt-ar juik tion of anttnnulc*. 

 Mucro and antennuks long. Shi-il >triatn!. marL* 

 especially plain un head. Tran.sjKircnt. lx-nx(h, 

 9 , ca. 0.4 mm. 



Rare, in lakes. 



Fig. 1098. Bosmirui I'ttct ptna. 



Sole American species. 



82 (77) Antennules united at base, and diverging at ape.\; numerous long 

 olfactory setae on their ventral side. 



Bostfiiuopsis Richard 1895. 



Bosminopsis deitcrsi Richard 18Q5. 



In K'lniTd! muih like Bos- 

 mina. Has.ii jurt of anlm- 

 niili-s uniloi v^ith . n. h .thrr 

 and ht-atl to • fxiC 



rostrum; diN> ''y 



mar a|x"X. wi: r.. .-UC- 



pling. olfai-tor>- srtac. Anten- 

 na with ^joint«-«! rnmi IN»*I- 

 alMl«)nun tai-* 'at 



tiaws; I l.i: '*r 



I laws and x '^^i' 



luitc sninulfs .ni{iii»ir t>> it. 

 $ with larpi- mov.ihlc an- 

 tinnulcs; sh.>r* -><"•- Mrrt 

 fiH)t with hi> ' "tu 



IxiiK'th. 9. *•' 'i' 



o.JS nim. 



Lake Charlcsand CalcMktt 

 ^- . , River, La. 



Fig. 1099. Bosminopsis Jcilcrsi. 



