458 Rev. Canon A. M. Norman on British Schizopoda 
Rostrum triangular, shorter than first joint of antennules ; 
a spine on each side of the carapace in front of the 
middle ; no spine over the base of the telson ; telson 
subequal to or rather shorter than uropods ........ B. Raschii. 
Genus THYSANOESSA. 
No spine on side of carapace. Antennal scale elongated 
and narrow, the extremity bluntly but narrowly 
rounded. First joint of antennules shorter than 
combined length of the two following joints. A 
spine over the base of the telson ............0005 T. neglecta. 
No spine on side of carapace. Antennal scale elongated 
and very narrow, inner margin gradually sloping to 
meet the outer, with which it unites at a terminal 
point. First joint of antennules longer than com- 
bined length of two following joints. No spine 
over the base of the telson... 0s. .0<e ee ees oe T. longicaudata. 
Genus NEMATOSCELIS. 
No spine on sides of carapace. Eyes very large, con- 
stricted across the middle. First legs longer than 
the body ineadulblecyin5c 055 da.s canteen cmos N. megalops. 
A species has been found on the Norwegian coast— 
Euphausia pellucida, Dana (=E. bidentata, G. O. Sars)— 
which will probably be also met with in our own seas. It 
may at once be distinguished from all the foregoing by these 
characters :— 
Two spines on each side of the carapace, one about the 
middle and the other behind it. Antennal scale broad and 
widely truncated at the extremity. First joint of antennules 
furnished with a leaf-like lappet (smaller than in Nyctiphanes) 
which is cut into two or many digital processes. ‘The ventral 
preanal spine is ér¢fid. 
In the following list the words Mus. Nor. (Museum 
Normanianum) indicate that specimens from all the localities 
and collectors cited in the sentence preceding are in my 
collection. For instance, examples of Lophogaster typicus 
are in my possession from all the localities given except 
“South of Cape of Good Hope.” 
