|-JL> "TKiniA NOVA" EXPEDITION. 



FAM. LINEID.E. 



SUB-FAM. LINEIN^E. 

 Liiii'iix, Sowerby, 1806. 

 (i. fsiiii'ii* i-nri'iKjiitiif. M'lut. (Text-figs. -3-4.) 



Linens crm<j< t tnx, M'Intosh, 1876, pp. 322-323. M'lntosh, 1871), p. 262; PL XV, figs. 17, 



18. Stucler, 1879, p. 123. Biirger, 1904 (1), pp. 90-97. Joubin, 1910, pp. 2-8; 



Text-figs. 1-10 ; PL I, figs. 1-5. 

 CcrelriifiiJnx rvrrugatus, Hubrecht, 1887, pp. 41-43; PL I, fig. 17; PL XI, fig. 9 ; PL XII, 



figs. 3, 4 ; PI.' XIII, figs. 1-6 ; PL XIV, figs. 2-4. Joubin, 1908, p. 6. 

 1 Cerelirat/ilns rhurcoti, Joubin, 1905 (1), pp. 315-318, and text-figure. Joubin, 1905 (2), 



p. 432. Joubin, 1908, pp. 2-6 ; Fig. 1. 

 LliieuK Itaiisi-tii, Joubiii, 1910, pp. 8-9 ; Fig. 11. 

 Eupolia punnetti, Joubin, 1910, pp. 9-10 ; Figs. 13, 14. 



Stations -2-20, 294, 316, 331, 338, 339, 340, 356: 45-250 fathoms; Station 

 3 '2 4, McMurdo Sound, on shore. 



This fine species forms the hulk of the present collection, having been captured at 

 nearlv all the dredging stations in the Ross Sea and McMurdo Sound, where it is 

 eyidently very abundant. 



The best account of this form is still that of Hubrecht (1887) in the report on the 

 " Challenger '' collection. His description and figures of the histological details of the 

 body -wall in particular are most accurate and complete. 



The original description of the species by M'Intosh (1876) is very brief, and may 

 be quoted here in full : 



" Body (in spirit) flattened, rather abruptly pointed anteriorly, and more gradually 

 posteriorly. The cesophageal region is marked externally by a series of prominent 

 and somewhat regular ruga;, which sweep from the mouth dorsally and ventrally ; so 

 that the dorsal view recalls that observed in Ar'/cn uter. 



" Colour dark olive throughout, with the exception of a white band, which crosses 

 the anterior border of the snout, and passes backward to the posterior third of the 

 lateral fissure, where it bends dorsally and terminates. 



" The special characters are the very large mouth, with the prominent rugae, 

 which show that the animal probably possesses unusual powers of cesophageal 

 protrusion a supposition borne out by the great development of the external circular 

 muscular fibres and the succeeding longitudinal coat of the organ. The internal 

 glandular lining is also very firm. The outer layers of the proboscis correspond with 

 the type in the Liueidae ; but the internal longitudinal layer is largely developed." 



In sixe the specimens in the present collection vary very greatly; the smallest 

 of the young individuals measure about 6 cm. in length, and are generally coiled 

 ventrally in a spiral when in spirit. The largest specimen is 65 cm. in length ; 

 this example was found "washed up on Hut beach, Feb. 28th, 1911, "and is in a 



