KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 22. N:G 7. 397 



In 1836 Guerin Meneville instituted the new genus Primno, which name is here 

 corrected into Eu prim no, because Primno was previously applied to a genus of Crustacea 

 by Rafinesque-Schmaltz in 1814. 



No new genus has subsequently been added to the family. 



The three genera are easily distinguished as shows the following table: 



A. The first four pairs of perteopoda are simple, not prehensile, the fifth pair have 



a folding hand, the sixth and seventh pair are simple; the dactylus of the 



seventh pair is transformed _ __ I. Eupriiuiio. 



B. The first two pairs of peneopoda are simple, the third, fourth, and fifth pairs are 



subcheliform, the sixth pair have a folding hand, and the seventh pair are 



simple with the dactylus transformed 2. Auchylomera. 



C. The first two pairs of perseopoda are simple; the second, third, fifth, and sixth 



pairs are more or less subcheliform, the seventh pair are reduced, consisting 



only of the femur __ 3. Phrosina. 



Genus 1. EUPRIMNO, F. E. GUERIN MENEVILLE, 1836. 



Diagn. Caput ante leviter productum. Pedes percei parium quattuor anteriorum simplices, non pre- 

 hensiles. Pedes quinti paris manu replicata instructi. Pedes sexti paris simplices. Pedes 

 septimi paris completi; dactylus transformatus. Pedes uri crassiusculi, laminares. 



The head is somewhat produced in front. The first four pairs of peneopoda are simple, not 

 prehensile. The fifth pair are provided with a folding hand. The sixth pair are simple. 

 The seventh pair are complete; the dactylus is transformed. The uropoda are compara- 

 tively thick and laminar. 



Syn. 1836. Primno, E. E. GUERIN MENEVILLE. »Description de quelques genres 



nouveaux des Crustaces appar- 

 tenant a la famille des Hype- 

 rines». Magasin de Zoologie. 

 6 me Annee. Classe 7 me , p. 2. 



» » H. Milne Edwards. 1838. Histoiro naturelle des Animaux 



sans vertebres par J. B. 



P. A. de Lamarck. 2 mo ed. 

 Tome 5 me , p. 306. 



» » •> 1839. » 3 me ed. Tome 2 nd , p. 370. 



» » » 1840. Histoire naturelle des Crustaces. 



Tome 3 me , p. 81. 



» » A. White. 1847. List of the Specimens of Cru- 



stacea iu the Collection of the 

 British Museum, p. 91. 



