100 
suddenly narrower than tlie first segments. In regard to the rnan- 
dibles (figs. 7—8) the specimen from the “Tjalfe” is very like Munn- 
opsis longicornis H. J. Hansen (Ergebnisse d. Plankton-Exp., vol. 
2 G c, Isop., Cumac. und Stomatop., 1895, p. 8, PI. 2, lig. 1 — ld), 
wliilst the mandibles in M. typica are quite different from these. 
Walker gives no hg. of the mandibles of 
M. Murrayi (Tattersall has a lig.: Fisheries, 
Ireland, Sci. Invest. 1904 pt. 2, (1905) PI. 5, 
fig. 8); but he writes (1. c. 1908 p. 228) „man¬ 
dibles with a prominent molar expansion and 
divided cutting edge as in M. longicornis Hansen; 
palp very large and prominent, with a lamellar 
terminal joint. As G. O. Sars has pointed out, 
Munnopsis longicornis Hansen differs in the struc- 
ture of the mandibles from the generic descrip- 
tion, as does the present species 14 (il/. Murrayi ’). 
The sculpture of the dorsal surface is very 
like that in M. Murrayi ; the few differences may be 
seen from the fig. (fig. 6). Of ant. 1 the mutual 
length of the joints is quite another than in M . 
typica, 4th and 5th joints being longer than 
the others. Also the flagellum is different, lst 
joint being very short and the second very long; 
the other joints (only 6 are preserved) are about 
4 times longer than their diameter. Of ant. 2 only two joints of 
the stem are preserved; they are of about equal length. Labrum 
is very prominent, has the usual form and 3 cross-furrows. The 
oral parts agree very well with those in M. longicornis and M. Murrayi , 
whilst the mandibles as mentioned are very different from those in 
M. typica. Of the 4 pairs of ambulatory legs only some single 
joints are preserved. Of the natatory legs the 4 first joints are 
preserved; the 4th joint has the same form as in M. Murrayi and 
is a little broader than in M. longicornis, but much broader than 
Munneurycope 
Tjalfiensis. 
