392 Cressa, Stenothoidae, Stenothoe 



2 C. minuta Boeck 1871 C. m., A. Boeck in: Forh. Selsk. Christian., 1870 

 p. 146 \ 1876 C. m., A. Boeck, Skand. Arkt. Amphip., v. 2 p. 469 t. 18 f. 7 | 1892 C. m., 

 G. O. Sars, Crust. Norway, vA p.280 t.99 f. 2 | 1885 Danaia m., G. O. Sars in: Xorske 

 Nordhavs-Exp., v.ü Crust. I p. 190 j 1890 Cressa dubia (part.), J. Bounier in: Bull, 

 sei. France Belgique, r. 22 p. 186 | 1893 Cd. (i)art.), A. DellaValle in: F. Fl. Xeapel, 

 V.20 p. 581. 



In general resembling C. dubia (p. 191). Back not dentate, tliough the 

 imbrication of the segments may produce tlie appearance of dentation. Head, 

 lateral corners acutely produced, with no inferior denticle. Side-plates 2 and 3 

 with a Single tooth curving foi-ward at lower bind corner, 4^'' with angle of 

 emargination not very acute. Pleon segment 3. postero-lateral angles 

 moderately produced. Kyesrathersmall, round. Anteunal, flagellum 12-joiuted. 

 Gnathopod 1, 6**^ Joint little more than half length of 6*^. Feraeopods 3 — 5, 

 2^ Joint regularly oval, not truncate at lower bind corner. L. Q 3 — 5 mm. 



North-Atlantic and North-Sea (Xorway, Firth of Forth). 



3. C. abyssicola Ö. Sars 1879 C. a., G. O. Sars in: Arcb. Naturv. Kristiau., 

 v. 4 p. 453 I 1892 C. a., G. 0. Sars, Crust. Xorway, v. 1 p. 278 j 1885 Danaia a., G. ü. 

 Sars in: Xorske Xordhavs-£xp., J/-.6 Crust. I p. 190 1. 16 f. 1, la | 1890 Cressa dubia (part.), 

 J. Bonnier in: Bull. sei. France Belgique, r. 22 p. 186 [ 1893 C. d. (part.), A. DellaValle 

 in: F. Fl. Xeapel, ?;. 20 p. 581. 



In several respects agi-eeing with C.dubia(p.l91). Body compact, notdorsally 

 dentate. Head, lateral corners acutely produced. No eyes. Antenna 1 longer 

 than the body. 1^* and 2^ joints not apically produced. Antenna 2 scarcely 

 half length of antenna 1. Gnathopod 2, 5**^ Joint naiTowly produced, 6**^ large, 

 palm almost transverse and straight, with a regulär series of 8 spines on 

 either side. Peraeopods 3 — 5, 2<^ Joint regularly oval. Colour whitish. 

 L. 6 mm. 



Aretic Ocean (between Finmark and Beeren Island, depth 841 ni: Greenland, 

 depth 376 m). 



11. Farn. Stenothoidae 



1871 Subfam. Stenothoinae, A. Boeck in: Forh. Selsk. Christian., 1870 p. 138 j 

 1888 Stenothoidae, T. Stebbing in : Rep. Voy. Challenger, r. 29 p. 747 | 1892 S., G. 0. 

 Sars, Crust. Xorway, c. 1 p. 234. 



Agreeing with the Metopidae (p. 171), except in some points of the 

 mouth-organs. Lower lip with the inner lobes rudimentary, separate. Maudible 

 without molar or palp. Maxiila 1, palp 2-jointed. Maxillipeds (Fig. 51p. 193). 

 inner plates small, separate, outer obsolete. Feraeopod 3, 2^ Joint perhaps 

 sometimes, but generally not, expanded ; peraeopods 4 and 5 with 2^ Joint expanded. 



Marine. 



1 genus, 15 aecepted species and 3 doubtful. 



1. Gen. Stenothoe Dana 



1852 Stenothoe, J.D.Dana in: Amer. J. Sei., ser.2 ».14 p.311 [ 1853 S. (Sp. uu.: 

 S. validus), J. D. Dana in: U. S. expl. Exp., ?;. 13n p. 923 | 1888 S., T. Stebbing in: 

 Rep. Voy. Challenger, u29 p.748 | 1892 S., G. 0. Sars, Crust. X^orway, v.l p.235 [ 1893 

 S., A. DellaValle in: F. Fl. Xeapel, t).20 p.564 | 1853 Probolium (Sp. un.: P. polyprion), 



