, CRUSTACEA. 329 
Mas adultus. Scuto dorsali mulio hiimiliore et depresso a femina discrepat. 
Antennt© superiores fere iit in femina, inferiores vero valde elongatse. 
Pedes omnes praeter ultimum par palpigeri Appendices caudo) late- 
rales [inopoda] magis elongate, trimco intiis setis phimosis obsito. 
Ur. Sars considers this genus to be identical with that of Cuma as defined 
by Lilljeborg, and has founded it upon Cuma ruhicimda of that author. 
Campylaspis rtibicunda (Lilljeborg), Sars, 1. c. p. 77, Gulf of Christiania. 
Campylaspis costata, sp. n., Sars, I, c. p. 70, Gulf of Christiania,* C.nuda(a, 
sp. n., Sars, 1. c. p. 80, from the Lofoten Islands. 
Cydapts, g. n., Sars, 1. c. p. 81. Corpus elongatum, cephalothorace 
[cephalon and pereion] postice valde attenuate. Scutum dorsale magnum et 
tumidum, inerme, a latere visum fere orbiculare, margine superiore et infe- 
riore valde arcuatis, rostro brevissimo. Segmenta thoracica [pereion] 4 modo 
pone scutum dorsale nuda apparent, ultimis 2 subrequalibus, valde angustis et 
abdomine vix latioribus. Abdomen [pleon] perlongum, cephalothorace 
multo longius, segmento ultimo quam solito majore. Antennarum superiorum 
fingellum exterius omnino deest, interius brevissinium 3-articulatum cilio au- 
ditorio imico longo prseditum Maxillipedes tertii paris [second pair of 
gnathopoda] valde elongati Pedum thoracicorum [pereiopoda] primum 
solummodo par (etiam in mare) palpigerum, sat elongatum, setis fere nudum, 
articulo basali maximo et valde dilatato, laminari, ultimis angustissimis j paria 
sequentia forma sibi similia. Pedum abdominalium [pleopoda] maris 
6 paria bene evoluta, biramea. Appendix caudalis media [telson] brevissima, 
laminam semiovatam setis et aculeis destitutam formans. Appendices late- 
rales [uropoda] breves et robiistre, trunco brevissimo, stylis terminalibus 
multo longioribus, lanceolatis nullisque aculeis dentibusve armatis, interiore 
uniarticulato, exteriore distincte biarticulato. Oculus null us. 
Cydapts lottyicaudata, sp. h., Sars, t. c. p. 82, from the Lofoten Islands. 
NannastAcid.®. 
This family is formed to distinguish those Cumacea that 
differ from the Diastylidcc in having two distinct and sejiarate 
eyes. 
Nannastacus, g. n., Spence Bate, Ann. & Mag. Nat. Hist. 1865, xv. p. 86. 
The anterior somites of the carapace are separated from the posterior by a 
distinct suture. The antero-lateral extremities of the posterior portion of the 
carapace do not extend so far anteriorly as the rostrum, and do not meet in 
front. The pereion has four somites exposed dorsally posteriorly to the cara- 
pace. The eyes are sessile and situated widely apart, one on each side of 
the anterior division of the carapace. The pereiopoda have the seven joints 
of each leg normally developed, and support a secondary appendage. The 
last four somites of the pleon and the telson are wanting. Nannastacus hino^ 
culoideSj sp. n., Sp. B. 1. c. p. 87, pi. 1. fig. 4, from the Shetlands. 
AMPHIPODA. 
' Orchestid^. 
Orcfiestia cavimanuj sp. n., Heller, Verhandl. zool.-bot. Gesellsch. 1865, 
