526 Talitrus 



slightly tapering, finger short. Gnathopod 2, 2*^ Joint membranaceous, narrowly 

 oval, 3*^ longer than 4*^, 5*'^ widest in proximal half of free part, tlien 

 from an angle of the bind margin narrowiug to apex, 6*^ shorter thau 5*^, 

 front margin straight, apex narrowly rounded, produced beyond the minute, 

 longitudinally placed finger. Peraeopod 1 considerably longer than peraeo- 

 pods 2 or 3. Peraeopod 2, finger short, conspicuously notched. Peraeo- 

 pod 3 Short, stout. Peraeopods 4 and 5 rather elongate. Peraeopods 3 — 5, 

 2*^ Joint narrowest above, front margin very convex, bind expansion sti'ongly 

 developed below, the Joint much smaller tban the side-plate in peraeopod 3, 

 but much larger in peraeopods 4 and 5. Pleopods 1 — 3 slender, rami 

 about as long as peduncle. üropods 1 and 2, both rami spinöse on margin 

 and apex. üropod 3, ramus subequal to peduncle, with spinules on margin 

 and slender spine at apex. Telson broader than long, apically rounded, 

 with a few spinules. Oolour like sand or a deal board, or different shades 

 of hörn in section. L. $ 15, d 16 — 25 mm. 



North- Atlantic and adjoitiing seas (European coast, at least from the south of 

 Norway to Naples; Azores). 



4. T. gulliveri Miers 1876 T. g., Miers in : Ann. nat. Hist., ser. 4 v. 17 p. 406 | 

 1879 T. g., Miers in: Phil. Tr., u. 168 p. 495 ] 1893 T.? g., A. Della Valle in: F.Fl. 

 Neapel, u. 20 p. 511. 



Body slender, smooth. Head small, anterior margin straight. Pleon 

 Segments 2 and 3, postero-lateral angle somewhat prominent and acute, 

 its bind margin straight. P]ye8 round, black. Antenna 1 about reaching 

 end of penultimate Joint of peduncle of antenna 2, 1^* Joint shorter than 

 2*^ or 3^ flagellum as long as peduncle, with 4 joints, last minute. Antenna 2, 

 not as long as body, much shorter and more slender than in T. saltator (p. 525), 

 penultimate Joint of peduncle more than half as long as ultimate, flagellum 

 rather longer than peduncle, 18-jointed. Gnathopods 1 and 2 small and 

 weak. Gnathopod 1, 5*^', 6*^ and 1^'^ joints short, subequal, not dilated. 

 Gnathopod 2, palm slightly dilated and the finger quite rudimentary as in 

 T. saltator. Peraeopods 4 and 5 considerably longer than the preceding 

 peraeopods, 2<^ Joint moderately developed. üropods 1 and 2, rami subequal. 

 üropod 3 quite rudimentary. L. about 10 mm. 



Nene of the specimens had largely developed subcheliform gnathopod 2, but, 

 jf all were $ , that would leave the genus indefinite. 



Island of Rodriguez. Under stones in damp places. 



T. Cloquetii (Aud.) 1826 Orchestia c, Audouin in : Descr. Egypte, v. 1 iv p. 93 ; 

 Crust. t. 11 f. 9 I 1862 0. c, 0. cloquettii, Bäte, Cat. Amphip. Brit. Mus., p. 22 t. 4 f . l 

 (a very inaccurate copy) | 1893 0.? cloquetii, A. Della Valle in: F. Fl. Neapel, ^.20 

 p. 509 I 1830 Talitrus c, H. Milne Edwards in : Ann. Sei. nat., u 20 p. 364 1 1836 Thalitrusc, 

 Guerin (-Meneville) in: Exp. Moree, Atlas p.3Zool. t. 27f. 4e | 1851 Talitrus c, Talitror- 

 chestia, F. Brandt in: Bull, phys.-math. Ac. St.-Petersb., v. 9 p. 135, 137, 138. 



Savigny's figure merely represents a misapprehension of T. saltator (p. 525) in 

 regard to the gnathopod. 



Red Sea? (Egypt). 



T. fissispinosus (Kossra.) 1880 Orchestia fissispinosa, Kossniann, Reise Roth. 

 Meer., u2i Malacost. p. 129 t. 13 f. 1—5 | 1893 0.? f., A. Della Valle in: F. Fl. Neapel, 

 17.20 p. 509 I 1888 Talitrus fissispinosus, T. Stebbing in: Rep.Yoy. Challenger, j;.29 p.515. 



Probably young $ . L. 5 mm. 



Red Sea. 



