MADEIRA AND THE CANARY ISLANDS. 
149 
feet (fig. 4) alike ; inner branch has one joint only ; outer edge 
of main branch is finely serrated. Pigment does not extend 
above the terminal spine, which is somewhat bent and finely ser- 
rated and clothed with dark hairs on dorsal side. Fifth feet of 
male (fig. 5) each 3-jointed, the right foot having extension on 
inner side of middle joint, both terminated by two small claws. 
Abdomen of male (fig. 6) 3-jointed, the third being nearly equal 
in size to the other two ; caudal segments about twice as long as 
broad, terminated by short strong setae. 
Several specimens of this strongly marked form were taken 
at Orotava, Teneriffe, all of which appear to be males. 
It has strong points of resemblance to both Candace pacing- 
dactyla and C. truncata, Dana, but is evidently distinct from 
both. The dark rings on the anterior antennae distinguish it at a 
glance. 
Candace brevicornis, n. sp. (PI. X. figs. 7, 8.) 
Several specimens of a Candace were taken at Orotava and at 
Santa Cruz, Teneriffe, which, although corresponding in most 
respects with C. truncata , Dana, differ in some particulars which 
are of sufficient importance to render it specifically distinct. 
In the first place the anterior antennae are composed of eighteen 
joints only, while C. truncata has twenty-four. Then the first 
four pairs of swimming-feet (fig. 8) are the same as in C . truncata , 
except that in our specimens, to which I propose to give the name 
C. brevicornis , the setae are all elegantly plumed, much resembling 
minute black feathers. No fifth feet can be made out in any of the 
specimens obtained. Abdomen only 2-jointed, the caudal seg- 
ments being long and straight, while in (7. truncata they are 
somewhat stumpy and divergent. The basal joint of the abdo- 
men is less triangular than in C. truncata. Our specimens are 
probably all females. 
Dias longiremis, Lilljeborg. 
Acartia laxa, Dana. 
A. denticornis, Brady . 
In all our specimens of both species of Acartia there is a long 
recurved spine at distal end of first joint of each anterior antenna, 
which does not appear to have been previously described. 
Drepanopus purcatus, Brady. 
Several females of this species were found, but no males ; a 
LINN. JOURN. — ZOOLOGY, VOL. XX. 13 
