MiMONECTES, A REMARKABLE GENUS OK AmPHIPODA HyPERIUEA. 11 



serrated on both margins at the lower end, is longer than the outer. 

 The outer ramus is straight, even at the outer margin, finely serrated 

 at the inner margin. 



The telson is short, broadly rounded, about a third of the length 

 of the peduncle of the third pair. 



Lenijth. 18 — 28 m.m. 



Diameter of the globe. 10 — 17 m.m. 



Colour: Yellowish brown. 



Habitat. The Atlantic. 



2. Miiuonectes spliaericus, n. sp. 



Diagn. Sphccra .scgmentis sex priiuis pcrcii foi'inata. 



Longitudo capitis tertiam partem altitiidinis sequans. 



Antennce siiperiores longitudeuem capitis sequantes. 



Scgraentum sextum pereii inflatuni, segmentnm septimiim compressiim. 



Pedes pereii tertii paris quartam partem diametri sphseme longitudiue £equantes. 



Pedes uri primi paris pedes secuiidi paris non superantes. 



The globe is formed b}^ the head and the six first pereional 

 segments. 



The head is about three times higher than long. 



The first pair of antennce are as long as the head. 



The sixth pereional segment is inflated, the seventh is of the ordi- 

 nary shape. 



The third pair of pereiopoda equal about a fourth of the diameter 

 of the globe. 



The first pair of uropoda do not reach to the end of the second. 



In this species the globe is comparatively larger than in M. Lo- 

 YÉN1, and the legs are much shorter. The circular space at the ventral 

 side of the body is framed by the head and all the pereional segments ; 

 but the seventh segment does not participate in the formation of the 

 globe; it has still the more compressed Hyperia-like shape. The pleon 

 and urus together do not equal a fourth of the diameter of the globe. 



The head carries only six ocelli on each side; it is four times 

 higher than long. 



The iqjj^er antennce are like those of M. Lovéni, but less serrated. 



The lower antennce are four-jointed. 



The third segment of the pereion is the longest, the second and 

 third the highest, forming the summit of the globe. The second seg- 



