vew Sjxrt'cs of Antarctic Ampliipodd. 15 



TllAUMATELSON, gen. nov. 



Palp of the first niaxilUxi two-jointed. 



First giiathopods distinct/// subcliclate ; first joints of all the 

 perieopods narrow. 



TelsoM large, entire, oval, and set in a verliccd plane on its 

 longer edge. 



Otherwise like Metopa. 



Thaumatelson Ilerdmani , sp. n. 



W.Q. Oct. 1002, from sponges, Hut Point ; one. W.Q. 

 13/2/04: Hut Point; one. 



Body : fourth side-jjlates umisuaUy large, covering the bases 

 of the last three pairs of peraiopods. Last two pleon-segments 

 with a poster o-dor sal tooth. Segments of the urus coalesced. 



Antenna; subequal, longer than the head. Upper antennce 

 without an appendage; flagellum shorter than the pedunele. 

 Lower antennce : peduncle subequal to that of the upper. 



First gnathoj)ods: wrist triangular, about half as long as 

 the hand, which is subquadrate, with the palm transverse, 

 rather convex, as long as the bind margin. 



Second gnathopods '. wrist produced beyond the base of the 

 hand ; hand subtriangular, widening distally, nearly twice as 

 long as wide ; distal half of the hind margin slightly concave, 

 ending in a tooth, beyond which is a long and a short spine 

 defining the transverse spinulose palm. 



rerceopods all similar, with narrow first joints. 



Third nropods : ramus subequal to the peduncle, the first 

 joint rather longer than the second. 



Telson as described above. 



Length 2'5 mm. 



A very remarkable little species, the form of the telson 

 being probably unique in the Amphipoda; the hand of the 

 second gnathopods recalls Amphilochus. 



(Ediceroides Calmani *, sp. n. 



Coulman Island, 13/1/02, 100 fath; two females. Flagon 

 Pt., 23/1/02 ; one young. Barrier, 29/1/02, 100 fath. ; one. 



Body : mesosome-segraents very short, subequal j first 

 pleon-segment longer than the second and much shorter than 

 the third, which, as well as the first urus-segment, has a 

 shallow dorsal carina and a rounded posterior margin. The 



* After my friend Dr. W. T. Caiman, to whom I am much indebted 

 for his vahiable assistance. 



