TIRONIDAE 



151 



length of 2nd, flagellum 18-19-jointed, 1st joint long, accessory flagellum apparently 

 i-jointed, equal to first two flagellar joints. Antenna 2 a little longer than antenna 1, 

 5th joint shorter than 4th, both setose, especially dorsally, flagellum 13-14-jointed. 

 Mouth-parts as in crenulata. 



Gnathopods 1 and 2 as in crenulata, but 5th and 6th joints, especially in gnathopod 2, 

 not so slender, strongly setose, with the same large serrate spine at angle of palms. 



Peraeopods as in crenulata; 4th joints in peraeopods 3-5, and to a lesser extent, the 

 5th and 6th also, rather stouter than in Sars' figure (1895, pi. cxxxvi), and considerably 

 stouter than in semiserrata (Stebbing, 1888, pi. li). 



Uropod 1 extending not quite as far as the apices of telson, uropod 2 extending as 

 far as, and uropod 3 only a very little beyond. 



The colour of no. 1 (as preserved) is greyish, with numerous darker specks extending 

 also over the 2nd joints of peraeopods 3-5, eyes bright salmon or orange; other speci- 

 mens are dull yellowish with dark red specks, eyes yellowish. The colour in life is given 

 in Note 142 for no. 2 as "ground colour creamy white, thorax and abdomen closely 

 covered with small maroon spots, posterior legs broadly banded with red, eyes salmon- 

 pink". 



Genus Syrrhoites, Sars. 



Stebbing, 1906, p. 279. 



Barnard, 1925, p. 353; 1930, p. 367. 



Syrrhoites anaticauda, Brnrd. (Fig. 89). 



Barnard, 1930, p. 367, fig. 37. 



Occurrence: 1. St. 170. South Shetlands. 5 $$ 12-13 mm., 9 ?? 

 (4 ovig.) 11-13 mm. 

 2. St. 175. South Shetlands. 2 3$ 12-13 mm., 1 ovig. 

 $ 11-5 mm. 



Remarks. These specimens show some slight differences 

 from the original Terra Nova specimen. 



More robust. Integument indurated and covered with 

 numerous rather large and deep pits which extend also on 

 to the telson and the 2nd joints of peraeopods 3-5. Dorsal 

 carination usually less pronounced than in the original speci- 

 men, even in o\ the peculiar reflexed hook on pleon segment 3 son, showing bevelling of the 



being reduced to an almost obsolete point ; the keel on pleon ed g es > and pitted sculpturing. 



11 i-i ■ -, 1 • b. Portion of margin of 2nd 



segment 4 is more rounded, not as high even in <?, and in . . . , , • 



01 ° joint or peraeopod 5 showing 



? much lower; the teeth on pleon segments 5 and 6 are well scu lpture and simple marginal 

 marked in 6\ that on 6 being larger than that on 5, but in $ teeth. 

 almost obsolete. 



On the other hand, the low rounded ridges flanking the dorsal carina are here more 

 prominently nodose, both on the peraeon and pleon; and all the peraeon segments just 

 above the junctions with the side-plates are nodose, as well as side-plates 5-7. Side- 



a. b. 



Fig. 89. Syrrhoites anaticauda, 

 Brnrd. a. Ventral view of tel- 



