Rev. Canon A. M. Nurman on British Alysiclas. 155 



2. Gastrosaccus sanclus (Van Beneden). 



1800. yfi/si'ji sancta, P. J. van Beneden, Recherches sur la Fauna lito- 



rale de Belgique, Criistaci^s, p. 17, pi. vi. ligs. 1-4. 

 1876. Gastrosaccus sanctiis, G. 0. Sara, Middelhavets Mysider, 



p. oG, pis. xxi., xxii., xxiii., (S $ . 

 1882. Gastrosaccus sanctus, Czerniavsky, /. c. fasc. i. pp. 85, 86, fasc. iii. 



PP-2,3,4. 

 1882. Pont<nn>jsis caucasica, Czerniavslvv, I. c. fasc. i. p. 70, fasc. iii. 



p. 6, pi. iv. figs. 4-20. 

 1885. Gastrosaccus sanctus, Cams, Prodronius Faunae Mediterraneaj, 



p. 467. 



Hinder margin of carapace dorsally furnished with two 

 lobes, one on each side of the centre, wiiich are projected 

 upwards and forwards. FiftJi segment of pleon not furnished 

 with a dorsal spine. Antennal scale with the slightly oblique 

 apex scarcely extending beyond the spine of outer margin ; 

 penultimate joint of peduncle of antenna with five plumose 

 set£e on inner margin, last joint with three. Legs with tarsus 

 composed of 7-14 articulations, the number of articulations 

 increasing on the posterior limbs. Telson shorter than pre- 

 ceding segments, with six spines on each side. Inner uro- 

 2')ods with about six spines on inner margin. Length about 

 13 millim. 



" Maris appendices genitales subcylindricse, apice irregu- 

 lariter lobatas extus setis ciliatis sex ornatte. Pedes ejus 

 spurii omnes natatoriae et longe setiferi, ranio exteriore in 

 Inio et 2do pari 9-articulato, in paribus 2 posterioribus 

 8-articulato : pedes spurii 3tii paris parte basali bene evoluta, 

 ramo interiore structura eadem ac in 2do, 8-articulato, arti- 

 culo basali extus processu brevi laminari instructo, ramo ex- 

 teriore styliformi, triplo fere longiore, in segmenta 4 sensim 

 et longitudine et latitudine decrescentia diviso, ultimo tenuis- 

 simo aculeis apicalibus 3 parvis armato." {G. 0. Sars.) 



Ilah. Jersey, 1884 [Sinel) : Mus. Nor. 



Distribution. Naples, 1887 [A. M. N.) -^ Belgium {Van 

 Beneden)) Goletta and Naples [G. 0. Sars)] Boulonnais 

 {Giard). 



3. Gastrosaccus Normani, G. 0. Sars. 



1876. Gastrosaccus Normani, G. O. Sars, Middelhavets Mysider, 



p. 65, pis. xxiv., XXV. 

 1882. Gastrosaccus Norrnuni, Czerniavsky, I. c. fasc. i. p. 87, and 



fasc. iii. 1885, pp. 2, '4, 5. 

 1885. Gastrosaccus Norinani, Carus, I, c. p. 467. 



Hinder viar(jin of carapace simple. No dorsal spine on 



11* 



