AM PHI POD A. 259 



to be seen. From L. furina, Saymjxy, it differs in the convex front margin of the 

 hand of the 2nd gnathopod; in the 3rd uropods reaching beyond the 1st and 2nd; 

 and in the quite different shape of the telson. 



Leucothoe stesroceras,* n. sp. Plate III., figs. 17a. 



Three specimens from the branchial sac of an Ascidian {Polycarpa) from Singapore, 

 sent by Dr. Hanitsch to Professor Hekdman in 1898. 



Head a little longer than the first segment, produced in front to a hood-like 

 projection over the base of the upper antenna. Ocular lobe rounded. Eyes round, 

 colourless in spirit, probably red (fig. 17a, a). 



First 5 segments of the mesosome subequal, the remaining 2 longer. 



Posterior angle of the 3rd pleon segment subrectangular. 



Upper antennae a little longer than the lower ; the proximal third part of the 1st 

 joint overlapped by the hood of the head ; flagellum a little longer than the 2nd 

 joint, 8-9 -jointed. 



Lower antennas : flagellum about half as long as the 3rd joint, 6-jointed. 



First gnathopods : side-plates securiform, the angles rounded. The rest of the 

 limb as in L. spinicarpa, except the 1st joint, which is stronger. 

 Second gnathopods : side-plates subquadrate, angles rounded. First joint strong, 

 two-thirds of the length of the hand. Carpal process about one-third of the hind 

 margin of the hand, setose. Hand widest opposite the end of the carpal process, 

 where the palm is obscurely defined by a small obtuse tooth; this is succeeded 

 distally by a slightly concave space ; then 2 deep sinus and a smaller one followed by 

 a nodular tubercle near the base of the dactylus : this does not quite reach the 

 palmar tooth (fig. 17a. gn.~). 



The rest of the animal resembles L. spinicarpa so closely that further description 

 is unnecessary. Length, 6 millims. 



Easily distinguished by the form of the head. 



Anamixis, Stebbixg, 1896. t 

 Anamixis stebbingi, n. sp. Plate III., figs. 18. 



Muttuvaratu pearl oyster washings, 19th November, 1902. One imperfect 

 specimen. Head produced in the middle. Ocular lobe rather deep, the lower angle 

 produced and upturned. Eye round, colourless in spirit. 



First body segment apparently coalesced with the head. Posterior angle of the 

 3rd pleon segment a rounded right angle. 



First side-plates rudimentary and concealed by the 2nd. which are much deeper 

 than the segments, pyriform, widest below the middle with a small tooth on each 



* ^reyos- = roof; Ktpas = horn; from the roof-like projection over the base of the antennae. 

 t 'Trans. Linn. Soc.,' vol. 7, p. 35, Piute 11. 



2 L 2 



