Hyale 563 



5. H. galateae Stebb. 1899 H.g., T. Stebbing in: Tr. Linn. Soc. London, ser. 2 

 v.l p.402 t. blB. 



Body and to some extent the appendages scabrous with little hairs 

 or scales like an inverted T (in Pacitic, but not in Atlantic specimens). 

 Side-plate 1 widened distally, 2*^ and 3*^ not very deep. Pleon segment 3, 

 postero-lateral corners quadrate. Eyes large, oval, nearly meeting at the 

 top of heid, black. Antenna 1 much longer than peduncle of antenna 2, 

 joints of peduncle small, successively shorter, flagellum in ö with 9 or 10, 

 in 9 with 7 distally widened joints. Antenna 2 about ^s as long as body, 

 ultimate Joint of peduncle considerably longer than penultimate, flagellum 

 in ö 12-, in 9 9-jointed. Maxiila 1, palp with a small constrictiou. Maxilli- 

 peds, 4*'^ Joint of palp slender, curved. Gnathopod 1 in d, 2^ Joint short and 

 broad, 4*^ apically squared, 5*^ nearly as broad as long, forming a rounded 

 lobe behind, with spines along the somewhat flattened hind margin, 6^^ 

 rhomboidal, the long front margin having a slight hump at the centre, the 

 hind margin much shorter, making an angle at the widest part of the Joint 

 before joining the oblique, spinuliferous palm, from which it is defined by 

 a palmar spine, which is overlapped by the curved finger. Gnathopod 2 

 in d, 2^ and ^^ joints distally lobed in front, 4*** with broadly rounded 

 apex, 5*^ very short, with the little horny-looking process from the hind 

 margin on either side more conspicuous than usual, 6*^ large, widest where 

 the short, smoothly curved hind margin meets the long, very oblique, nearly 

 straight, spinulose palm, narrowest at hinge of the long, curved finger, which 

 has a strong bulb at baso of inner margin. Gnathopods 1 and 2 in 9 small, 

 5*^ Joint short, 6**^ oblong, slightly widened at rather oblique, spinulose palm, 

 gnathopod 2 rather the larger. Peraeopods 1 — 5 moderately robust, finger 

 with minute inner setule; the oval 2*^ Joint in peraeopods 3 — 5 nearly smootb 

 behind, its wing in peraeopod 5 broadly rounded and somewhat produced 

 downward. üropods 1 and 2 with lateral spines on both rami, in uropod 2 

 rami rather stout, uuequal. Uropod 3, ramus rather shorter than peduncle. 

 Telson with distal half of each lobe triangulär. L. 4 mm. 



Pacific (lat. 38*>N., long. ISO^E.; lat. 5« N., 1370E.); North- Atlantic (Sargasso 

 Sea; lat. 26» N., long. 59» W.). 



6. H. maroubrae Stebb. 1899 H. m., T. Stebbing in: Tr. Linn. Soc. London, 

 ser. 2 v.l p.405 t. 32C. 



Body rather compressed. Pleon segment 3 with postero-lateral corners 

 quadrate. Eyes rounded, about the diameter apart, darkish. Antenna 1, 

 peduncle short, 1^* Joint as long as 2<^ and 3'^ combined, flagellum of 9 

 slender joints. Antenna 2 about half as long as body, flagellum longer 

 than peduncle, slender, 1 9-jointed. Gnathopod 1 in d", 4t^ ö*'^ and 6*^^ 

 joints subequal in length, 6^*^ oblong, scarcely longer than wide, hind margin 

 from near base fringed with spinules, which distally meet a transverse row 

 of smaller spinules, across which the short finger closes, as if along a palm, 

 but half the distal margin of the 6*^ Joint extends beyond these in a micro- 

 scopically denticulate lobe at right angles to the hind margin though the 

 junctiou is rounded off. Gnathopod 2 in d, b^^ Joint veiy small, triangulär, 

 ßtii yßjy large, broadest proximally, hind margin very short, spine-fringed 

 palm very oblique and long, well defined, the long finger nearly reaching 

 the 4*^ Joint, its apex passing on inner side of palmar spine into a pocket 

 on surface of the Joint. Branchial vesicles very small. Peraeopods 1 — 5 

 having on 6*^ Joint a distal, blunt-headed, partially serrate spine, and between 



