Cumacea: 6. Chalarostylidae, 2. Hemilamprops 



57 



4. H. pellucida Zimmer 1908 H. p., Ziniraer in: Ergeb. Tiefsee-Exp., v.H 

 p. 171, 172 t. 39 f. 53, 54; t. 40 f. 55—59 ] 1910 H. j)-, T. Stebbing in: Ann. S. Afr.Mus., 

 r. 6 p. 415 I 1912 H. pellucidus, T. Stebbing in: Ann. S. Afr.Mus., vAOy p. 144 t. 52 (4). 



Integument pellucid, delicate, microscopically scabrous. Pseudorostral 

 lobes short, subacute, with serrate edges. Carapace in both sexes rather 

 deep, the small triangular eyelobe without lenses, its medio-dorsal line convex, 

 carrying 4 or 5 forward-pointing denticles, immediately followed by a nearly 

 level line of 20 denticles reaching beyond the middle 

 of the carapace and succeeded by a groove between 

 the inflated branchial regions. Pedigerous segments 

 combined shorter than the carapace. Pleon longer than 

 the preceding portion of the body. Telson with 3 long 

 apical spines, its lateral margins conspicuously denti- 

 culate, on the nearly parallel-sided hinder half carrying 

 6 to 8 pairs of spines, subject to some irregularity; 

 the telson in the adult male apparently longer thaii 

 in the Q , with a narrower base. Antenna 1 with 

 serrate edge to the large P* joint, 3<^ joint small, in 

 d not longer than broad, flagellum in 9 5- or 6-jointed, 

 accessory of 3 joints, the 3^^ microscopic, flagellum in (S 

 4-jointed. accessory of 3 well developed joints. An- 

 tenna 2 9 small, 4-jointed, with 1 seta on the rather 

 large 1^* joint and 1 on the small 2'^'^. Antenna 2 

 in subadult d showing a flat process on the side of 

 the basal joint; the annulated flagellum long. Mouth 

 organs not aff'ording distinctive characters. Peraeopod 1, 

 2^^^ joint much curved, its convex border distally 

 serrate. Peraeopod 2, 2'^'^ joint shorter than suc- 

 ceeding joints combined, of which the strongly spined 

 5^^ is longer than the short 6*'* and long narrow 7*^ 

 combined. Peraeopods 3 and 4 showing the characteristic 

 sexual differences, but the 3^^ joint in peraeopod 3 of 

 the subadult male not showing any flattened appendages. 

 Pleopods as in Paralamprops serratocostata (p. 59). teison"anr"iiopod Rafter 

 Peduncle of uropods in Q longer than the telson with stebbing). 



its terminal spines and longer than both rami, but in the 

 subadult d not longer than the telson including its median apical spine and 

 not quite so long as the endopod, which in this sex has the 3^ joint a little 

 longer than the 2^'^, and the first much longer than these 2 combined; the 

 exopod. with its first joint considerably longer than the 2"*^, is equal to the 

 peduncle in the d, but shorter than it in the 9. L. 8*5 mm. 



5. Africa, outside the Agulhas Bank, depth 564 m, and off Cape Point N. 8P E. 32 miles. 



5. H. cristata (O. Sars) 1870 Lamprops c, G. 0. Sars in: Forh. Selsk. Christian., 

 1869 p. 157 I 1872 L. c, G. 0. Sars in: Forh. Selsk. Christian., 1871 p. 270 | 1879 

 L. c, A. M. Norman in: Ann. nat. Hist., ser. 5 v. 3 p. 68 | 1883 Hemilamprops c, G. 0. 

 Sars in: Forh. Selsk. Christian., nr. 18 p. 11, 56 | 1886 S. c., G. 0. Sars in: Norske 

 Nordhavs-Exp., «. 6 Crust. 2 p. 19 | 1896 H. r., J. Bonnier in: Ann. Univ. Lyon, u 26 p. 549 | 

 1900 H.c, G. O. Sars, Crust. Norway, v. 3 p. 25 t. 18 | 1905 ?B:. c, Caiman in: Sci. 

 Invest. Fish. Ireland, 1904 app. Ip. 41 | 1908 H. c, Zimmer in: Ergeb. Tiefsee-Bxp., 

 V.8 p. 171 I 1912 H. c, T. Scott in: Sci. Invest. Fish. Scot!., 1911 nr. 1 p. 3. 



In near agreement with H. normani (nr. 3) and H. pellucida (nr. 4), but 

 distinguished from both in the d by absence of the medio-dorsal longitudinal 



Fig. 27. 

 H. pellucida ((5') Zimmer, 



