178 Cumacea: 24. Nannastacidae, 5. Cumellopsis, 6. Cuniella 



1. C. helgae Calm. 1905 C. h., Caiman in: Sci. Invest. Fish. Ireland, 1904 

 app. 1 p. 28 t. 2 f. 20— 34 | 1906 C. h., Caiman in: Mt. Stat. Neapel, t'. 17iv p. 418. 



Pseudorostral lobes slightly upturned, dorsally truncate, shortly produced m 

 front of the small sightless eyelobe, front margin concave below with prominent 

 antero-lateral angle leading to 2 teeth on the lower margin. Carapace 

 elevated above the pedigerous segments, dorsal line slightly carinate to the 

 rear, each side with broad shallow longitudinal depression, evanescent to the 

 rear, bounded above and below by low rounded ridges, the lower sharpened 

 at the antero-lateral corner. Pleon a little longer than the preceding part of 

 the body, 5*^ segment about twice as long as the telsonic. Antenna 1. 

 1st joint' shorter than 2''^ and 3^ combined, flagellum 3-jointed, the 2-jointed 

 accessory minute. Maxilliped 1 with 10 branchial leaflets on epipod of 

 young d. Peraeopod 1, 6^^^ joint a little shorter than 5*^ nearly twice as 

 long as 7*^ Peraeopod 2, 7*'^ joint little more than twice as long as 6^^. 

 In 3^ to 5*^ pairs the 5*^^ joint rather long. Uropods considerably longer 

 than 5*^ and telsonic segments of pleon combined, peduncle slender, nearly 

 twice as long as endopod, exopod three-fourths as long as endopod. L. o 

 with developing oostegites, 5*8 mm, young d 4-7 mm. 



77 miles W. N. W. of Achill Head, county Mayo; depth «99 m. 



2. C. puritan! Calm. 1906 C.j9., Caiman in: Mt. Stat. Neapel, vAliv p. 418 

 t. 27 f. 10—12. 



Very near to Cumellopsis helgae, but the size much less, antero-lateral 

 corner less acute, lateral longitudinal depression of the carapace bounded 

 below by a sharply marked ridge, the uropods with the peduncle shorter 

 and rami longer, the endopod in immature male eight-ninths, and in adult 

 male nearly three-fourths as long as the peduncle. L., adult 6, 3-6 mm, 

 immature d, 2*7 mm. 



Alediterranean, near Capri, depth 9.50 — 1100 m. 



6. Gen. Cumella 0. Sars 



186.5 Cumella (Sp. un.: C. pygmaea), G. 0. Sars in: Forh. Selsk. Christian., 1864 

 p. 198 I 1869 C, A.M.Norman in: Hep. Brit. Ass., u 38 p. 272 ] 1879 Spencebatea 

 (Sp. un.: S. ahyssicola), A. M. Norman in: Ann, nat. Hist., ser. 5 ». 3 p. 67 | 1879 Cumellay 

 G. 0. Sars in: Arch. Naturv. Kristian., vA p. 93, 126 | 1900 C, G. 0. Sars, Crust. Norway, 

 V.3 p. 80 I 1905 C, Caiman in: Sci. Invest. Fish. Ireland, 1904 app. 1 p. 23 | 1911 C, 

 Caiman in: Tr. zool. Soc. London, vASiv p. 344 | 1912 C, T. Stebbing in: Ann. S. 

 Afr. Mus., V. lOv p. 129, 164, 166. 



Eyes, when present, confluent, median. Peduncle of uropods usually 

 longer than the rami, the endopod usually longer than the exopod. 



11 species accepted, 2 inadequately known. 



Synopsis of accepted species: 



I Pedigerous segment 3 with submedian pair of upraised 

 teeth I.e. australis 

 Pedigerous segment 3 without such teeth — 2. 

 I Eyes wanting; second antennae of female 3-jointed — 3. 

 \ Eyes present; second antennae of female 2-jointed — 4. 



j Eyelobe narrow 2. C. graeiUima 



^ \ Eyelobe broad 3. C. molossa 



J Telsonic segment longer than preceding segment — 5. 

 \ Telsonic segment not longer than preceding segment — 6. 



