129 



one specimen were found: one female and one male, and in front of the female were lying 

 seven ovisacs, behind it one; another specimen contained one female and one male. 



REMARKS. The genital area of the female in several respects (shape, chitinisation 

 and arrangement of hairs) deviates much from all the other species. By the name given to 

 this species I have commemorated Lieutenant-Captain Inspector C. Holboll, to whom the 

 study of Greenlandish Malacostraca owes so much, and who more than half a century ago 

 sent home rich collections of these animals. A considerable part of this material was worked 

 out by H. Kroyer. In the writings of this author we also find interesting biological observa- 

 tions by Holboll concerning Greenlandish species of Lysianassidae etc. 



16. Sphaeronella intermedia n. sp. 



(PI. V, fig. 3a— 3h.) 



FEMALE. The largest specimen is -89 mm. in length, -81 mm. in breadth and 

 somewhat flattened; the specimen represented in fig. 3a is '57 mm. long and -47 mm. broad. 

 The head in the adult specimen is well defined and rather small. The frontal margin provided 

 with fine and close hairs (fig. 3d). The antennulae moderately long, with long setas. The 

 antennae much as in the three preceding species, but the basal joint equals in length one 

 of the two following joints. The good-sized mouth with a rather broad border. The 

 maxillulae with well-developed additional branch. The basal joint of the maxillae without any 

 process. The maxillipeds with a slender, naked basal joint, the three other joints all sepa- 

 rated, the terminal joint has two short spines inside its point, and a single one on the out- 

 side. The sub-median skeleton has a single, rather narrow list inside each maxilla; a trans- 

 verse area in front of the basis of each maxilliped is covered with numerous tolerably long 

 hairs; between the head and the trunk two chitinised transverse lists. The lateral margin 

 of the head with a fringe of hairs, which off the maxillae and the maxillipeds spreads over 

 a pretty considerable triangular area. The trunk very sparingly set with simple, rather 

 short hairs, which are closest together behind the sides of the head; the trunk-legs distinct. 

 The genital area (fig. 3 e) large, quite as broad as the base of the head (fig. 3 a), somewhat 

 broader than long; the whole area forms a solid plate which is nearly heart-shaped, deeply 

 incised in front and with a semicircular posterior margin. The genital apertures are some- 

 what curved, but their direction is nearly parallel with the median line of the animal, and 

 they are situated pretty near each other close behind the deep incision of the anterior margin 

 of the plate. The plate is furnished with a number of irregularly scattered hairs, and the 

 caudal stylets are situated close together at a good distance inside the posterior margin of 

 the plate, a little behind the genital apertures. (In the illustration we also see the orifices 

 of the receptacula seminis, which are marked by dotted lines.) 



17 



