loO AilPUirODA NOUMALIA. 



longer than tho cephalon, the third joint being distally produced 

 inferiorly ; fltigellnm scarcely longer than the peduncle, each arti- 

 culus having the distal extremity produced. Inferior antenmc much 

 more slender than the superior ; the peduncle scarcely reaching to 

 the extremity of the peduncle of the superior pair; flagellum 

 rcacliing as fiir as the siipcrior antenna;. Gnathopoda uniform, 

 having the carpi continuous with the propoda, forming together a 

 long oval; pabna; imperfectly defined, oblique, slightly convex, 

 and continuous with the inferior margin, armed with a few hairs. 

 Pereiopoda subecpial ; posterior pair of ploopoda lanceolate, clean. 

 Telson membranous, obtusely ovate. 

 Length ^ths of an inch. 



Hah. Moray Frith {Rev. G. Gordon). 



4. Calliope Norvegica. 



Ampbitlioe Noi-vegica, Rathkc, Beitr, ztir Faun. Norwegens, Nov. Act. 

 Acad. Leap.- Carol Kai. Car. 1843. 



" Cephalon without a rostrum. Eyes small, round. Eack smooth. 

 Inferior antenna; nearly as long again as the superior. Propodos 

 of the second pair of gnathopoda much larger than that of the 

 first pair. Last joint (? propodos) of the posterior pair of pereiopoda 

 dilated*. Last pair of pleopoda longer than the penultimate, 

 furnished with two nearly equal lanceolate rami. Telson single, 

 pointed, foliaceous. 



" Length 4 lines. 



" Hub. Chris tiansund." — RatliJce. 



43. AMPHITHONOTUS. 



Amphithonotus, Costa, in Cat. Croat. Ital.pcr Fr. Gagl. Hope,Napoli, 

 1851. 



Body not laterally compressed. Cephalon produced into a rostrum. 

 Antennae slender, without secondary appendage. Mandibles having 

 an appendage, Squamiform plates to the maxillipeds not largely 

 developed. Gnathopoda similarly formed, subequal, having the 

 carpi inferiorly produced. Pereiopoda subequal. Posterior pair 

 of pleopoda double-branched, Telson single, cleft at the apex. 



This genus closely approaches Calliope, but is very distinguishable 

 in its general appearance ; among other differences, the absence of 

 lateral compression is the most palpable. Costa has formed this 

 genus to receive Av^pldilwe Marionis of Edwards, ixn.^ A. panopla and 

 A. carinata of Kriiyer ; and Mr. Stimpson beHeves it to be synony- 

 mous \\iih. Owen's gcjma Acantlwsoraa. But as Amphitlioe Marionis 

 is a synonym of De.vamine spinosa of Montagu, as A.panopla belongs 



* " latiusculo." — Anvf. fc.rf, 1. c. 



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