546 Talorchestia 



margin with conspicuous pellucid process, 6*^ Joint shorter, with similar but 

 stouter process, finger with sinuous inner margin, a little overlapping palm. 

 Gnathopod 2 in d, 4*^ and 5*^^ joints very short, 6**^ very long, liind margin 

 produced almost from the base into a curved tooth, witMn which tbe long 

 finger closes, leaving a cavity between its concave inner margin and the 

 long oblique, almost straight palm; the main part of the band has a conical 

 shape, the palm and front margin being comparatively little divergent. 

 Young ö (Barrois, Heller, Czerniavski?) has the band of gnathopod 2 with 

 a palm chelately produced, or excavate at right angles to the bind margin, 

 or more or less oblique. Gnathopod 1 in 9 without processes on 5**^ and 6^^ 

 joints, 6*^ at apex but little stouter than base of finger. Gnathopod 2 in 9 , 

 2^ Joint wider above than below, 5*^ wider proximally than distally, 6**^ 

 shorter than 5*^ Peraeopods .1 — 5 very spinöse, in general nearly as in 

 T. quoyana. üropod 3, ramus shorter than peduncle. Telson obtusely 

 triangulär, slightly emarginate, spinulose. Colour light brownish yellow, with 

 rows of darker spots; sometimes dorsum carmine red. L. reaching 15 mm. 



European coasts from Baltic and England (in Devon only in sand) to the Black 

 Sea; Egypt. 



4. T. tridentata Stebb. 1899 T. f., T. Stebbing in: Tr. Linn. See. London, 

 ser. 2 V. 7 p. 398 t. 30 b. 



Body not veiy broad. Side-plates 1 — 4 scabrous, quadrate, 2*^ — 4*^ 

 deeper than 1^*. Eyes roughly oval, rather more than theii" longer diameter 

 apart. Antenna 1 very small, not reaching middle of penultimate Joint of 

 peduncle of antenna 2. Antenna 2 about ^/g as long as body, ultimate Joint 

 of peduncle twice as long as penultimate, flagellum scarcely as long as 

 peduncle, flattened, with about 24 short transverse joints. Gnathopod 1 

 in ö spinöse, 5**^ Joint long, the subapical pellucid process narrow, very 

 prominent, 6*^ Joint rather narrow, the apical pellucid process prominent, 

 finger with sinuous inner margin, extending beyond the process of 6*^ Joint. 

 Gnathopod 2 in d, 2*^ Joint channelled, apices of front scarcely lobed, 5*^'^ 

 Joint diminutive, 6*^ very large, bind margin fringed with spinules, palm 

 oblique, having near the finger-hinge a large triangulär spinulose tooth, 

 followed by a sinuous slope, and defined from bind margin by 2 teeth side 

 by side, finger very large, with swelling near the hinge, and beyond this 

 the concave margin fringed with small spinules. Peraeopod 2 much shorter 

 than peraeopod 1, finger with strong prominence near base of nail. Peraeopod 3 

 very short, 2^ Joint nearly as broad as long. Peraeopods 4 and 5 not very 

 elongate, but much longer than peraeopod 3. All peraeopods spinöse, with 

 rather small brancbial vesicles. üropod 1 long, rami much shorter than 

 peduncle, both with marginal spines. üropod 2, rami not shorter than peduncle, 

 stoutly spined. üropod 3, ramus as long as peduncle or longer. Telson 

 Short, spinulose. L. 11 mm. 



North-Pacific (California). 



5. T. pravidactyla Hasw. 1880 T. p., Haswell in: P. "Linn. Soc. N. S. "Wales, 

 V. 5 p. 100 t. 5 f. 5. 



Body stout. Eyes small, round, black, wide apart. Antenna 1 reaching 

 beyond penultimate Joint of peduncle of antenna 2, flagellum in 9 7-, in ö 

 10-Jointed. Antenna 2 in d more than thrice as long as antenna 1, ultimate 

 Joint of peduncle more than twice as long as penultimate, flagellum as long 



