SYSTEMATICAL NOTES. 



17 



To illustrate the systematical 

 following schematic table is given : 



position of the Oxycephalids the 



A. HYPEEIIDEA RECT1CORNIA. 



The first pair of antennae are fixed to the an- 

 terior part of the head, they are straight, the first 

 joint of the flagellum is large, the following few 

 in number and terminal. The second pair are not 

 similar to the first, slender, often angulate. 



a 1. The head is small, not tumid. 



aa 1. The first joint of the flagellum of the first 



pair of antennae is styliform, not tumid. 

 aa 2. The first joint of the flagellum of the first 



pair of antenna? is lanceolate, tumid. 

 aaa 1. The seventh pair of perreopoda are 



not transformed. 

 aaa 2. The seventh pair of perseopoda are 



transformed. 

 a 2. The head is large, tumid. 



aa 3 The first joint of the flagellum of the first pair 

 of antennae is tumid. 

 aaa 3. The seventh pair of peraeopoda are 



transformed. 

 aaa 4. The seventh pair of peraeopoda are 



not transformed. 

 aa 4. The first joint of the flagellum of the first 



pair of antennas is styliform, not tumid, 

 a 3. The head with the peraeon is transformed into a 

 halloon-like bladder. 



2. LANCEOLTD^E. 



3. VIBILID.E. 



4. CYLLOPODID^. 



5. 



6. THAUMATOPSID^E. 



7. MlMONECTID-ffi. 



B. HYPEEIIDEA FILICORNIA. 



The first pair of antennae are fixed to the an- 

 terior part of the head, they are straight, the first 

 joint of the flagellum is large, the following many in 

 number filiform (J), terminal. The second pair are 

 subsimilar to the first, not augulate. 



fo 1. The uropoda with distinct rami. 



fob 1 The mandibles with palp. 



bb 2. The mandibles without palp. 

 b 2. The uropoda transformed, without rami. 



Nova Acta Reg. Soc. Sc. Cps. Ser. III. 



8. HYPERIID^E. 



9. PHRONIMID.E. 



10. ANCHYLOMERID^}. 



3 



