(Jaiioii A.M. Norman w« Uritish Amphlpoda. 1 II 



milling my North Atlantic allied tornn I linl Talorclicstiti 

 loiifjiconu's (Say) and Talorchentiii inei/'tlophthii'inus (liafo) 

 from N.E. America (received under these names from S. 1. 

 Smith) to be true l\iJorchesti<p^ in which the males have the 

 tirst gnathopods suhchelate and similar in structure to those 

 of Oi'chestid, and thus cjuito dilK;rent from the two sp-cies we 

 are now considcrini::. From Cadiz 1 have examples of 

 OichestoiJia Fischerii (M. -Edwards) given me by Signor 

 Bolivar under that name. In this species, as in those which I 

 here call Orchestoidea Deshai/esii and Orchestoidea brito, there 

 is a close correspondence in the character of the first gnatlio- 

 pod male, which is not subchclato, for the end of the hand is 

 not cxjianded to receive the impact of the finger, but both 

 the hand and the wrist bear a tubercle on the margin. Tlies<j 

 tubercles may prove general throughout the g(Mius; but 

 whether they exist in the type Orchestoidea tubercul'ita, 

 Nicolot, I have no means of ascertaining. It is a question 

 whether the two genera ought to be maintained. It is not 

 necessary to go beyond Srobbing's species in the paper re- 

 ferred to, where in Talorclieslia novce-hollanduv^ Stcbbing, we 

 have a characteristic species of Talorchestia, in T. Desha /esii 

 wiiat 1 take to be an Orchestoidea, and in 7\ tridentata^ 

 Stebbing, an intermediate form, but one which, if the genera 

 are to be kept distinct, must be retained in Tulorchefttia. 



Fam. II. Lysianassidae. 



Genus 1. NOUMANION, .1. Bonnier. 



= Nonnania, Bueck (nee Bowerbauk). 



17. NorvHihion qiutdrimnnus (Bate *t Westwooil). 



J8("8. O/'M r/uadrimfDia, Jiato i^' Westwood, (1) vol. ii. p. SO.'J. 

 187G. Nnnnaniii t/iiiclriiiut/iti, Boeck, (I'-'S) p. 188, pi. vi. lig. 3. 

 18U0. Nonnunin (jiuulriviana, Sais, (142) p. ',^^2, pi. xiii. fig. 1. 

 18S»3. Xdi )iiani<>u quntlriDianus, J. Buiiiiier, " Les Amphipodps dii 

 Boulonnais, III.,'" Bull. 8ci. France el Belgicjue, vol. x.xiv. p. 107. 



Il.ih. Isle of Cumbrae, 20-2 '> fath. (A M S.): Mas. Sor. 

 Near IVvaar Island, Firth of Clyde {T. IS.). 



Distrib. South and West Norway ((j. O. S'irs). 



Genus 2. AciDOSTOMA, Lilljeborg. 



18. Acidostoma obesum (Hate). 



18(31. Anonyx ohfgut, Bate & We.stwood, (1) vol. i. p. i)S. 



I80r). AciiloKtoma ohe.vni, Lilljeboifr, "On Li/siimnsw 7n'i</el la nivtt aiiA 



Afnp/ii/io/a lysini)a.-«i/ia,'' Nov. .Vet. Soc. Sci. Upsal. ser. .S, p. 34, 



pi. V. 

 18!K). Acidostoma obesun, Sara, ( 142) p. 38, pi. xiv. f\g. 2. 



//ah. Shetland (A. M. N.) ; Banft^(r. Elioard) : .]fus. .Vor. 

 Isle of (>umbrao(/>. IL) ; St. Andrews {.\fclntos/i) ; bitweeu 



