400 PANTHALIS (EKSTEDI. 



Genus XXIII. — Panthalis, Kinberg, 1857. 



Scales smooth, flat, rounded or campanulate, covering the dorsum anteriorly, 

 leaving the rest bare in the middle. Foot with a dorsal process in front, a trilobed 

 median and a small ventral process. Dorsal bristles brush-like at the tip ; median 

 spinous on one side, and terminating in a long whip ; ventral with curved tips — finely 

 tapered and spinous. 



Panthalis (Erstedi, Kinberg, 1857. 



Specific Characters. — Head somewhat urn -shaped, with the rounded bosses for the 

 eyes (ommatophores) in front, and the small median tentacle extending a little beyond 

 them. Posteriorly it runs smoothly into the body. The median tentacle springs some- 

 what behind the bases of the pinkish ocular peduncles. The lateral tentacles arise close 

 together beneath the ocular peduncles, and their tips extend further than the median. 

 The palpi are long, flesh-coloured, and tapering, with minute conical papillse towards 

 the extremity. The tentacular cirri are longer and stronger than the median tentacle, and 

 like the latter, smooth. Body 3J inches in length, tapering in front and more distinctly 

 posteriorly. The pearly white or flesh-coloured dorsum is finely streaked transversely. 

 Inferiorly a ventral ridge and then a median groove stretch from the shield-shaped area 

 behind the mouth. Proboscis cylindrical, with y§ papillse, the upper median forming a 

 long smooth tentacle, the inferior a shorter process with an arch at its base. Maxillse 

 elongate, with a strong dorsal ridge ending in a hook, and a flattened blade with six to 

 eight teeth. Scales thirty-nine pairs, rounded or campanulate, smooth, the first three 

 pairs covering the dorsum, the rest leaving the centre bare. Foot with a dorsal process 

 in front, a trilobed median and a small ventral process, and with two spines. The 

 dorsal bristles are long and brush-like at the tip (bipennato-penicillate, Kinberg), the 

 median stout and with short broad tips, spinous on one side, and terminating in a long 

 whip (aristate, Kbg.), and ventrally a series of long slender bristles with curved tips 

 finely tapered and spinous (subulato-serrate, Kbg.). 



Synonyms. 



1857. Panthalis (Erstedi, Kinberg. Eugen. Resa. Zool., ii, p. 25, Tab. vii, f. 34. 



1859. „ „ D.anielssen. Norske Vid. Selsk., Skrifter., Bd. iv, Hefte 2, p. 115. 



1861. ,, „ Sars. Nyt. Mag. Natur., xi, Hefte 3, p. 253. 



„ „ „ idem. Forh. Skand. Naturf., viii, Kjobenh., 1860, p. 625. 



1863. „ „ „ Nyt. Mag. Naturv., xii, Hefte 3, p. 628. 



1863. „ „ „ Geol. og Zool. Reise, 1862, p. 46. 



1865. „ „ Malmgren. Nord. Hafs.-Ann., p. 85. 



1867. „ „ idem. Ann. Poly., 16. 



1869. „ „ Mcintosh. Rept. Brit. Assoc., 1868, p. 338. 



