TANAIDACEA AND ISOPODA— TATTERSALL. 241 



45. Antarcturus hiemalis, Hodgson. 



A. hiemalis, Hodgson, 1910, p. 41, pi. VI, figs. 1-le. 



Occurrence. — Station 314, 5 miles N. of Inaccessible Island, McMurdo Sound, 

 222-241 fathoms, bottom fauna, sixteen specimens, largest male 35 mm., largest female 

 40 mm. 



Station 355, 71° 46' S., 166° 8' E., 300 fathoms, bottom fauna, one male, 34mm., 

 one female, 32 mm. 



Remarks. — This is a very distinct and easily recognisable species. There are no 

 well-marked sexual differences. Hodgson has already noted the growth of Hydroids, 

 Polyzoa, worm-tubes, etc., on the bodies of this species. The present specimens show 

 similar growths, and indicate a species of almost sedentary habits. With such animal- 

 growths all over the body and with its decoration of long fine hairs the animal must 

 be very well concealed in its environment. 



46. Antaixturus lilliei, n. sp. PL IX, fig. 1. 



Occurrence. — Station 220, off Cape Adare, mouth of Eobertson's Bay, 45-50 

 fathoms, bottom fauna, one female, 15 mm. 



Station 355, 77° 46' S., 166° 8' E., 300 fathoms, bottom fauna, one male, 14 mm. 

 (type). 



Description. — The general form and sculpture of the body will be seen from 

 the figure of the male (pi. IX, fig. 1 ). The female is slightly more vaulted and swollen 

 in the thoracic region, owing to the development of the marsupial pouch. The body 

 is widest at the fifth free thoracic somite, which is markedly swollen at each side above 

 the insertion of the legs of that somite. The body is covered by minute granules, 

 which extend to the autennules and antennae. On the lateral parts of the last two 

 thoracic somites, and on the abdomen, there are also coarser tubercles as shown in the 

 figure. The head is excavated in front and bears two cephalic horns, short, conical in 

 lateral view, more or less quadrangular in outline in dorsal view, and situated between 

 the eyes. There is no spine on the antero-lateral corners of the head in front of the 

 eyes. The terminal spines of the abdomen are quite short, stout and blunt, and do not 

 project beyond the tip of the abdomen. 



-The second antennae are not quite as long as the body, the proportion being as 

 9 is to 10. The second joint bears a prominent spine dorsally and at the antero- 

 lateral distal corner. The third joint has four tooth-like spines on its outer margin. 

 The fourth joint is nearly twice as long as the third, and the fifth joint one and one-third 

 times as long as the fourth. Both joints are without prominent spines. The flagellum 

 is about one-half times the length of the fifth joint, and composed of seven joints. 



The third, fourth and fifth thoracic limbs have the outer distal corners of their 

 second, third and fourth joints spiuiform, and their front margins clothed with long- 

 setae. The sixth, seventh and eighth thoracic limbs are shorter and stout in build, 



2 M 2 



