46 ME. T. SCOTT ON ENTOMOSTEACA 



large and stout, 6-joiuted, the first and last joints long, tlie intermediate very short. 

 The small intermediate joints bear each one seta, and the extremity of the last joint three 

 lono" plumose setse ; the primary braucli is extremely short, being almost rudimentary. 

 Mandible stout, with nvimerous terminal papillose teeth; the exterior angle bears a 

 strono- laterally-produced spine, which is serrate on the ujiper margin. The mandible 

 palp is of moderate size, 2-branched, each branch with several long terminal plumose 

 liairs. The maxUlBD are large, and bear at the extremity and on the interior margin a 

 ]iumber of stout setiferous spines ; the external branch of the maxilla-palp very short 

 and broad; terminal branch stout, somewhat digitiform; both branches with numerous 

 plumose hairs. Foot-jaws as in Euchceta Hessei, except that near the extremity of the 

 anterior foot-jaw are two setiferous spines much stouter than the others, and also two 

 plain spinous setae on the lower extreme angle of the ultimate joint. The first four 

 pairs of swimming-feet are similar to those of Euchceta ; the first pair resemble those of 

 Euchceta Sessei, except that the inner branch has a lobe-like process near the base, and 

 the outer branch a long slender terminal spine, finely serrate on the outer margin ; the 

 outer branches of the second, third, and fourth pairs armed with a stout terminal spine, 

 liaving about twenty strong saw-like teeth on its outer margin. The basal joint of the 

 fourth pair bears a large bifurcate spiniform appendage ; the setse on both branches of 

 all the four pairs are densely plumose. Abdomen short, composed of four segments, 

 the first large, beiDg nearly as long as all the other three together. Catidal stylets short, 

 divaricate, each with one short spine on the outer distal angle, and foiu* moderately long 

 terminal plumose hairs ; another slender hair springs from near the inner distal angle of 

 each stylet, and is about half the length of the others. 



Habitat. Station 2, 50 fathoms, January 1st (night tow-netting). Lat. 5° 58' N., 

 long. 14° 20' W., surface gathering, January 5th (night tow-netting). Lat. 3° 22' 5" N., 

 long. 4° 11' 8" E., 20 and 30 fathoms tow-nettings, January 20th (night collections). 

 Lat. r 55' 5" N., long. 5° 55' 5" E., 460 fathoms tow -netting, January 22nd (day collection). 

 Lat. 1° 29' N., long. 7° 33' 8" E., surface tow-netting, January 27th (night collection). 

 Station 23, 30 fathoms, February 5th (day collection). 



Only a few specimens of this species were obtained ; they were all females, and were 

 readily distinguished by the large forked spiniform appendage on the basal joints of the 

 fourth pair of swimming-feet. As has been pointed out by Prof. Brady, TJiidina messi- 

 nensis, Clans, differs from Vnclina, Dana, by the absence of the first pair of foot-jaws in 

 the male (as described by Dr. Glaus), and by the inner branches of the first and second 

 swinimino'-feet being only 1-jointed (Glaus, however describes the inner branch of the 

 second pair as 2-jointed, but ia the ' Buccaneer ' specimens it was certainly only 

 1-jointed). In TJndina, Dana, on the other hand, the inner branches of all the 

 swimming-feet are 3-jointed. Uiidina messlnensis has the fifth pair of feet in the 

 male similar to those of EuchcBta pulchra, Liibbock (to which it has been doubtfully 

 referred), but dificrs from that and all other Euchceta} kno\\Ti to me by the very 

 rudimentary form of the primary branch of the posterior antennse. 



