CnislacPM of the Channel hJaii'ls. 368 



Mcgalarnpvs agilis, Norman. Guernsey, in tow-net. 

 Microdeutopus danmoniensis. Bate. Guernsey and Jersey (W.). 



riryllotalpa, Costa. (PI. XVI. fig. 3 ; PJ. XVII. figs. 6, 7.) 



1893. Microdentopiis (iryJlotcdpa, Delia Valle, Faun, und Flor. des 

 Golfes von Neapel, Gaminarini, p. 44, pi. i. fig. 12, pi. xi. fig.*. 2o-4;}. 



1894 Microdeutopus gryllotcdpa, G. 0. bars, Crust. Norway, Amplii- 

 poda. p. 543, pi. cxcii. tig. 2. 



1906, Microdextopus yvyUotalpa, Stebbing, Das Tierreicb, Amphipoda, 

 1. Gammaridea, p. o9U. 



Found at Jersey by M. Chevreux and Mr. Sinel. 



I have given fignres of tlie one-jointed accessory flagellura of the 

 anteunules (Pi. XVII. fig. 6), which is shorter than the first joint of 

 the fiagellum, and of the first gnathopod of the male, for comparison 

 with the same parts in the following species. This gnathopod has 

 2-4 toothed processes on the hinder margin of the carpus, which 

 increase in size distally. Delia Valle gives only two such processes. 

 I figure (PI. XVII. fig. 7) a gnatho])od with three such processes 

 fi-ora Plymouth (as figured by Sars and by Eruzelius, Auionoe 

 (jrandimaua), and (PI. XVI. fig. 8) another carpus from Valencia, 

 Spain, with four processes (as figured by Costa). 



staiionis, Delia Valle. (PI. XVI. fig. 4; PI. XVII. figs. 8-11.) 



1888. Microdeutopus griiUotalj a, Nebeski, Beit, zur kennt. der Aiuphip. 



der Adria, p. 4.'), pi. iv. tig. 41. 

 1893. Microdeutopus staiionis, Delia Valle, Faun. u. Flor. des Golfes 



von Nenpel, Gamuiarini, p. 41-'5, pi. v. fig. 9, pi. x. figs. 31-41. 

 1906. Microdeutopus statioids, Stebbing, Das Tierreicb, Auiphipoda, 



I. Gammaridea, p. oUO. 



Sowinsky has referred a Microdeiitopus found in the Black Sea to 

 this species ; but I cannot reconcile the fig. 6 in his paper of 1891 

 with the first gnathopod (male) of this species. Nebeski gives an 

 interesting series of figures illustrative of the gradual change in 

 form of the gnathopod from the young to the adult. 



I last year dredged many specimens of this addition to our fauna 

 oft' St. Peter s Port, Guernsey. 



I have figured some of the most salient features which distinguish 

 this species from M. (jryJlotalpa. The secondary appendage of the 

 anVennules is y-4-joiiiled and is equal in length to the first three 

 joints of the flagellum (PI. XVII. tig. 8). The first gnathopod in the 

 male has not quite so massive a carpus as in that species (PI. XVII. 

 figs. 9 & 10). The carpus is armed with three teeth at tlie extre- 

 mity (not passing down tlie hind maigin) ; these teeth are not in 

 the same straight line, the innermost and bluntest tooth bends away 

 from the large central tooth, so that it would appear that the finger 

 closes down between them. PL XVII. fig. 11 rejjresents the distal 

 portion of the first gnathopod of the female, and PI. XVI. fig. 4 the 

 second gnathopod of the male. 



tStimpsoneUa chelifera, Bale. Guernsey (V.); Jersey {S. ^'- IJ.). 



