KONGL. SV. VET. AKADEMIENS HANDL1NGAE. BAND. 22. N:0 7. 79 



The nine genera composing the family may be distributed in the order shown by 

 the following diagram: 



A. The epimerals are distinct, articulating with the segments. 



a 1. The second pair of perreopoda are simple, not subcheliform 1. Tauria. 



a 2. The second pair of peraeopoda are subcheliform or cheliform. 



aa 1. The carpal process of the second pair of peraopoda is compressed, 



knife-like 2. Ilyperoche. 



aa 2. The carpal process of the second pair of pera;opoda is gauge- or 

 spoon-shaped. 



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



aaa 2. The body is smooth. 



aaaa 1. The carpus of the third and fourth pairs of perseo- 

 poda is narrow, not dilated. 

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

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



aaaaa 2. The fifth pair of perreopoda are elon- 

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

 aaaa 2. The carpus of the third and fourth pairs of peraeo- 

 poda is dilated, together with the metacarpus 

 forming a folding prehensile organ. 

 aaaaa 3. The fifth pair of perseopoda are not 



longer than the sixth pair 6. Parathemisto. 



aaaaa 4c. The fifth pair of peraeopoda are much 



longer than the sixth pair 7. Eutheiuisto. 



B. The epimerals are coalesced with the segments. 



b 1. The first pair of peraeopoda are more or less subcheliform 8. Theuiistella. 



b 2. The first pair of peraeopoda are simple, not subcheliform 9. Phrouiiuopsis. 



Genus 1. TAURIA, DANA, 1852. 



Diagn. Caput magnum, fere globosum. Percvon leve, epimeris distinctis instructum. Pedes perazi 

 primi et secundi parium non subcheliforines nee subprehensiles; carpus pedum primi paris 

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

 ac quarti parium non dilatatus. Pedes parium trium ultimorum longitudine subaequales. 

 Pedes uri longi. 



The head is large, almost globular. The peraton 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. 



