o BOVALLIUS, SOME AMPHIPODOUS GENERA. 



4. Lanceola curticeps, b. sp. 



The sixth pair of pereiopoda are mucli longer than the 

 others. The pleon and urus together are shorter than half 

 the pereion with the head. The npper antennas reach beyond 

 the end of the third artide of the lower antennse, The ses- 

 ments of the pereion are smooth, the third is longest. The 

 rostrum is very short but acute. The telson is equal to half 

 the peduncle of the last pair of uropoda. 



Hab. Cape Verde Islands. 



5. Lanceola Clausii, n. sp. 



The sixth pair of pereiopoda are a little shorter than the 

 third. The pleon and urus together are shorter than half the 

 pereion with the head. The upper antennse reach farther 

 than half of the fourth article of the lower antennas. The 

 third and fourth segments of the pereion are swollen each; 

 into a roll at the anterior margin the second, fifth, and sixth 

 segments carry such rolls but smaller. The third segment is 

 the longest. The rostrum is wanting. The telson is shorter 

 than the peduncle of the last pair of uropoda. 



Hab. Davis Strait. 



Daira. H. Milne-Edwards. 



The Hyperidean amphipoda were scientifically made out 

 for the first time in the year 1830, when H. Milne-Edwards 

 published his treatise on the system of the Amphipoda ^). 

 Among the new genera then established by him was also 

 Daira, one of the most intricate genera with regard to its 

 identification, that I have met with duriug my studies of the 

 Crustacea. Indeed, the results of my researches on the genus, 

 here to be set forth, are rather to be looked upon in the light 

 of conjectvires, submitted to the judgment of experienced 

 carcinologists, than as the outcome of my own established 

 conviction. In the year 1840 Milne-Edwards repeated his 



') »Extrait des recherches pour servir ä Thistoire naturelie des Crusta- 

 cés ami3hipodes», in »Ann. Se. nat». Torne 20. Paris 1830. Pag. 392. 



