466 Schizopoda. 



m 1. Mysis Helleri G. 0. Saks. Corpus minns grracile, abdomen antice 

 sat latum; oculi brevlter piriformes; squama autennarum II. latitudine ^'3 longi- 

 tudinis aequans; tarsus pedum 5-articulatus; telson retro modice angustius, apice 

 incisum: uropodum lamina interna telso paullo longior; par IV. pleopodum d telsou 

 superaus. Long. $ 1 1 mm. 



Habit.: Spezia. Siracusa, Goletta (G. 0. Sars). 



m 2. M. assimilis G. 0. Sars. Corpus elegans gracile; oculi magni piri- 

 formes; squama antennarum II. plus quadruplo longior quam latior; tarsus pedum 

 6-articulatus; telson marginibus flexuosis, apice inciso; uropodum lamina interna 

 telso paullo brevior, externa plus tertia parte longior quam interna, angusta. 

 Long. $ vix 13 mm. 



Habit.: Goletta (G. 0. Sars). 



m 3. M. arenosa G. 0. Sars, Corpus breve, obesum, abdomen breve; 

 oculi brevissimi; squama antennarum II. stipite primarum vix longior, duplo lon- 

 gior quam latior; tarsus pedum 4-articulatus; telson elongatum, retro attenuatum, 

 apice inciso; uropodum lamina interna telso vix longior, stipes antennarum II. d 

 valde incrassatus, appendice terminali maxima biloba. Long. ^ vix 7 mm superans. 



Habit.: Goletta (G. 0. Sars). 



m 4. M. bahirensis G. 0. Sars. Corpus minus gracile; oculi sat elon- 

 gati; squama antennarum II. elongata, stipite primarum fere duplo longior; tarsus 

 pedum in pari I. triarticulatus, in ceteris biarticulatus, ungue distincto; telson 

 breve, apice breviter inciso; uropodum lamina interna telso ^/4 longior; appendix 

 stipitis antennarum II. 6 solito minor. Long. 9 vix 8 mm superans. 



Habit.: Lacus „E1 Bahira" inter Tunis et Goletta; Spezia, Messina, Sira- 

 cusa (G. 0. Sars). 



m 5. M. longicornis M. Edw. Corpus gracile angustum, integumentum 

 ubique squamulis minutis hispida; oculi magni piriformes, ad basin longe sejuncti; 

 squama antennarum II. anguste lanceohita, extremitate ultima sutura a reliqua 

 squama disjuncta; tarsus pedum o-articulatus ; telson elongatum, apice integro; 

 uropodum lamina interna telso vix longior, basi valde tumida; par pleopodum IV. 

 6 solito minus. Long. $ vix 9 mm. 



Habit.: Alger (Lucas); Napoli, sinus, ad villam Realem (H. M. Edwards. 

 0. G. CosTA, G. (). Saks). 



m 6. M. truncata Heller. Stipes autennarum I. perbrevis, squama an- 

 tennarum II. perlonga, paullo superata a filis terminalibus primarum; telsou basi 

 lata, ante ipsum apicem attenuatum, lamina interna uropodum telso paullo lougior, 

 externa perlonga. Long. 7 — 8 liii. 



H a b i t. : Adria : Lissa (Heller). 



Macropsis G. 0. Sars {Fodo^isis Vax Hen., nec Thomps.). Pc<Ui)iculi ocii- 

 lorum valde elongati; sfipes antennarum I. graciUimus, clongafus, Jilamcnfis arficnlati.-> 

 duohus cf appoidihns, duabus insfrncfiis. Jicliqua Mysidis similia. 



1. M. Slabberi GoKs (Podopsis Slahberi Vax Bex.). Corpus hj^alinum gra- 

 cillimum; scutuni dorsah» segmenta 272 ultima thoracis non tegens; telson bre- 

 vissimum segmeiito ultimo multo brevius apice integro ; uropodum lamina intei-na- 

 telso plus tertia parte longior, externa valde angusta. Long. 5 circ. 12 mm. 



Distrib.: Mare Norvegicum, litora Belgii; Pontus. 



Habit.: Spezia, Siracusa, sinus Tunetauus (G. 0. Sars). 



Leptomysis G. O. Sars. Corpus gracilc; scufum dorsaJc scgmenfa 2^ /:i 

 postcriora ihoracis non tegcns, infcr oculos acute prodnctnm; sfijnfis anfcnnarum I. 

 artictdus 2. supine processum setifcrum prachens; squania antcnnarum II. lanccolata 



