142 



Cumacea: 17. Pseudociimatidae, 1. Petalosarsia 



1. P. deelivis(0. Sars) 1865 Petalopus d.,G. O. Sars in: Forh. Selsk. Christian., 

 1864 p. 197 I 1883 Petalomera d., G. O. Sars in: Forh. Selsk. Christian., 1882 nr. 18 

 p. 13, 58 I 1886 P. d., G. O. Sars in: Norske Nordhavs-Exp., v.6 nr. 15 p. 24 j 1892 P. d., 

 T. & A. Scott in: Ann. nat. Hist., ser. 6 v. 10 p. 206 | 1893 Petalosarsia d., T. Stebbing 

 in: Int. sci. Ser., v. 74 p. 308 | 1894 P. d., A. 0. Walker in: Rep. Brit. Ass., u 64 

 p. 326 I 1897 Petalomera d., Ehrenbaum in: Wiss. Meeresunters., v. 2 i p. 419 | 1900 

 Petalosarsia d., G. O. Sars, Crust. Norway, v.3 p. 77, 108 t. 54 | 1900 P. d., Zimmer in: 

 Fauna arctica, v.l p. 428, 437, 441 | 1902 P. d.., T.Scott in: Rep. Fish. Board Scotl., u20 

 p. 509 I 1909 P. d., A. M. Norman & G. S. Brady in: Nat. Hist. Tr. Northumb., ser. 2 

 r. 3 p. 34 I 1911 P. d.. Stappers in: Camp. arct. Orleans, Crust. Malac. p. 121 t. 6 f. 11, 

 12 1 1912 P. d., Caiman in: P. U. S. Mus., vAl p. 675. 



Fig. 93 



P. declivis (Sars), peraeo- 



pod 1. 



Fig. 95. 



P. declivis (Sars), 



pleopod 2. 



Fig. 94. 

 P. declivis (Sars), pleopod i. 



Fig. 96. 



P. declivis (Sars), telson and 



uropod. 



Body rather short and compact, integument strongly indurated. Pseudo- 

 rostrum rather prominent, acute, more so in Q than in d, antero-Iateral corners 

 minutely projecting with a little apical denticle. From near this point to 

 the hind margin a pair of strong dorso-lateral carinae traverse the carapace, 

 to which in the d are added a second pair subparallel to the upper pair. 

 The pedigerous segments smooth. Pleon rather shorter than preceding part 

 of the body, telson smooth, broadly semioval. Antenna 1, 2^^*^ joint shorter but 

 broader than the P*, with medial margin partially serrate, 3*^ joint scarcely 

 longer than broad in 9 and broader than long in d. Antenna 2 in Q with 

 2'^^ joint much narrower than 1^\ but nearly as long, flagellum in d reaching 



