KONGL. SV. VET. AKADEMIENS UANDLlNflAR. liANl). 22. N:0 7. 79 



The nine geneva composiiig the Family iriay be distrihiited iii tlic order shown Ijy 

 the tbllowing diagram: 



A. The epinierals are distinct, articiilating with the segments. 



a 1. The second pair of perteopoda are simple, not subclieliform I, Tauria. 



a 3. The second pair of perajopoda are subcheliform or cheliform. 



aa 1. Tlie carpal process of tlie second pair of pei"a2opoda is compressed, 



knife-like _ 3. Il.vperoche. 



aa 2. The carpal process of the second pair of perasopoda is gauge- or 

 spoon-shaped. 



aaa 1. The body is more or less hirsute... 3. Eiiiiilopis. 



aaa 3. The body is smooth. 



aaaa 1. The carpus of tlie third and fonrth pairs of perao- 

 poda is uarrow, not dilated. 

 aaaaa 1. The fifth pair of perajopoda are not elon- 



gated, as long as the sixth pair 4. Ilyperia. 



aaaaa 3. The fifth pair of perasopoda are elon- 



gated, much longer than the sixth pair 5. Ilyperiella. 

 aaaa 2. The carpus of the third and fourth pairs of pera?o- 

 poda is dilated, together with the metacarpus 

 forming a folding prehensile organ. 

 aaaaa 3, The fifth pair of pera^opoda are not 



longer than the sixth pair C. Paratheiiiisto, 



aaaaa 4. The fifth pair of jjerajopoda are much 



longer than the sixth pair 7, Eutheniisto. 



B. The epimerals are coalesced with the segments. 



b 1. The first jjair of persopoda are more or less subcheliform 8. Tlieiiiistella. 



b 2. The first pair of pera;opoda are simple, not subcheliform.. 9. Phrouiuiopsis. 



Genus 1. TAURIA, DANA, 1852. 



Diagn. Caput maguum, fere globosum. Perceon leve, epimeris distinctis instructvim. Pedes percei 

 primi et secundi parium nou subcheliformes nec subprehensiles; carpus pedum primi paris 

 dilatatus, nou produetus; carpus pedum secundi paris non productus. Carpus pedum tertii 

 ac quarti parium non dilatatus. Pedes parium trium ultimoruin longitudine suliisquales. 

 Pedes uri longi. 



The liead is large, almost globular. The perceon is smooth, the epimerals distinct. The first 

 and second pairs of perceopoda. are not subcheliform nor subprehensile ; the carpus of the 

 first pair is dilated, not produced; the carpus of the second pair is not produced; the carpus 

 of the third and fourth pairs is not dilated. The last three pairs are subequal in length. 

 The uropoda are long. 



