KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 22. N:0 7. 59 



The seventh faraily MIMONECTIDiE, C. BOVALLIUS, 1885. 



Diagn. Perwon simul cum capite inflatura, sphasram maximam formans. Ocelli, non conjuncti, in 

 lateribus capitis dispersi. Antennw primi paris rectaj, flagello elongato instructse, articulus 

 primus flagelli longiis, vix tumidus, articuli sequentes parvi, perpauci, terminales. Antenna» 

 secundi paris parv;e, articulis perpaucis, parti inferiori capitis affixa\ Instrumenta oris ma- 

 sticatoria, maudibulas palpo carentes. Pedes percni parium quinque ultimorum ambulatorii; 

 pedes septimi paris non transformati. 



The perceon together with the head is inflated, forming a very large globe. The ocelli are 

 not united, but dispersed on each side of the head. The first pair of antennw are straight, 

 provided with an elongate flagelliim, the first joint of the flagellum is long, scarcely tumid, 

 the following joints are small, few in number, terminal. The second pair of antennse are 

 small, few-jointed, fixed at the under side of the head. The mouth-organs are adapted 

 for mastication, the mandibles without palp. The last five pairs of perfeopoda are walk- 

 ing legs, the seventh pair are not transformed. 



Syn. 1885. Mimonectidce, C. BOVALLIUS. »Mimonectes, a remarkable genus of Amphipoda Hype- 



ridea», p. 2. Nova Acta Soo. Reg. Scient. Upsal. 



Ser. III. Vol. 13. 

 ji >) 1887. "Systematical list of the Amphipoda Hyperiidea». Bih. t. 



K. Sv. Vet. Ak. Handl. Bd. 11. N:o 16, p. 15. 



" '1 1887. »Arctic and Antarotic Hyperids». Vega-Exp. Vetensk. 



Iakttagelser. Bd. 4, p. 558. 



Since I first established this faiuily no further additions to our knowledge of the 

 peculiar animals constituting it have been made, but a re-examination of my scanty ma- 

 terial allows me to give some more details, overlooked at the first occasion, and to make 

 some corrections especially in the di^awings. Still I believe that the stränge and remark- 

 able shape acquired by the Mimonectida? must be looked upon as an instance of mimicry 

 serving them as a protection against voracious foes. 



Genus 1. MIMONECTES, C. BOVALLIUS, 1885. 



Diagn. Caput magnum, partem sphserse formans. Pedes perm primi et secundi parium simplices non 

 cheliformes. Pleon compressum, non inflatum. Pedes uri ramis binis liberis instructi. 



The head is large, forming a part of the wall of the globe. The first and second pairs of 

 p>ercROpoda are simple, not cheliform. The jAeon is narrow, not inflated. The uropoda 

 are provided each with two free rami. 



