696 Cyrtophium, Leipsuropus 



Synopsis of accepted species: 

 Gnathopod 2 in cj, palm and hind margin smoothly continuous 1. C. Orientale . . p. 698 

 Grnathopod 2 in cj, palm well defined. forming three streng 



teeth 2. C. minutum . p. 698 



1. C. Orientale Dana 1853 & 55 C. o., J. D. Dana in: U. S. expl. Exp., v. 13n 

 p. 840; t. 56 f. la— d | 1893 Flatophium o. (pari.), A. Della Valle in: F. Fl. Neapel, 

 rj.20 p.332. 



Body elliptical, dorsally corrugated, not carinate. Aiitennae 1 and 2 

 subpediforra, subequal. Autenna 1, fiagellum with 3 subequal joints, together 

 subequal to 3^ Joint of peduncle. Anteuna 2, ftagellum with 3 joints, tbe l^*long, 

 stiliform, longer than ultiraate Joint of peduncle, the other 2 rainute. Gnatho- 

 pod 2, 6**^ Joint stout, subelliptical, nearly straigiit below and liirsute; finger 

 nearly as long as 6*^ Joint. Peraeopod 5 (in figure) almost completely 

 unarmcd; 2*^ Joint quite narrow. üropods 1 and 2, apical spines of great 

 length, numerous spines on inner margin of the broad longer ramus, the 

 other subterete. Telson (in figure) bluntly triangulär. L. about 4 mm. 



Strait of Singapore. 



2. C. minutum Hasw. 1879 C. m., Haswell in: P. Lina. Soc. N. S. Wales, v.-i 

 p. 343 t. 22 f. 6 I 1885 C. m., Haswell in: P. Linn. Soc. N. S. Wales, vAO p. 109 t. 18 

 f. 1—5, 9 I 1888 C. m., T. Stebbing in: Rep. Voy. Challenger, v.2^ p. 1193 | 1893 Plato- 

 phiiim m., A. Della Valle in: F. Fl. Neapel, ^.20 p. 334. 



Body corrugated, most strongly on pleon segroents 1 — 3. J]yes prominent. 

 Antennae 1 and 2 subequal. Antenna 1, flagellum with 3 joints, the 1^* longer 

 than 2*^ and 3*^ combined, the 3*^ very small. Antenna 2, flagellum much 

 shorter than ultimate Joint of peduncle, with 2 joints, 1^* long, stout, 2^ minute, 

 tipped with curved spine. Mandible, 3^ Joint of palp less dilated than in 

 Podocerus (p. 700). Gnatliopod 1 as in Podocerus, except that the palm is 

 less strongly distinguished from hind margin of 6*^ Joint. Gnathopod 2 

 in ö, 4*^ Joint distally produced to an acute point and very hirsute, 

 5*^ rudely squared, not projecting, 6*^ with front margin smoothly curved, 

 not notched for spines; palm defined from short hind margin by long 

 tooth, which the apex of finger reaches, arching over 2 others. Peraeo- 

 pods 1 — 5 all nearly alike; 2'^' Joint short and narrow, with a little projectiou 

 at Upper corner, 5*^' longer than 4*^, 6*'^ than 5*^; the spinules on the 

 6*^^ Joint very unimportant in appearance. Pleopods 1 — 3 each with 4 — 6 

 coupling spines. üropods 1—3 and telson about as in C. Orientale. Colour 

 pellucid with brown dots, and across the head a brown band. L. 2 — 3 mm. 



Port Jackson [East-Australia]. 



C. laeve Heller 1866 C. L Oam. Heller in: Denk. Ak. Wien, u26u p. 49 t. 4 

 f. 9— 12 i 1893 Flatophium brasiliense (part.), A. Della Valle in: F. Fl. Neapel, «.20 p.329. 



Adriatic (Lesina). 



3. Gen. Leipsuropus Stebb. 



1899 Leipsuropus (Sp. un.: Cyrtophium parasiticum), T. Stebbing in: Ann. nat 

 Hist., ser. 7 v.S p. 241. 



Like Cyi-tophium (p. 697), but pleon segment 5, though present, devoid 

 of legs. 



1 species. 



