85 



hollowed below the vertical slit forming the mouth, and the 

 ventral edge of which trends to the fissure between the lobes of 

 the collar. 



The species seems to be brightly coloured probably of a rich 

 brownish purple, which in some uniformly tints the branchiae. 

 Each foot in the anterior region has a dark pigment-speck just 

 in front of the papilla at its anterior and dorsal edge, and 

 though the papilla is less distinct in the posterior region a 

 similar speck of pigment continues to the tip of the body. 

 Moreover, at the dorsal end of each hook-row in this region a 

 dark speck is present. 



The thoracic bristles are in eight bundles and differ from 

 those in SpirograpJils Spallanzani by the greater length of the 

 wmged tips of the dorsal and the narrower wings of the ventral 

 series (Plate VIII., ligs. 43 and 44, the former form the upper 

 series, the latter form the middle). In S". Spnlldiizniii, the short 

 broad spear-tips of the ventral are diagnostic, one being 

 sketched by way of comparison in Plate VIII., fig. 45. The 

 foregoing distinctions are still more pronounced in the pos- 

 terior bristles, which have much more elongated tapering 

 tips and narrower wings than in SpirograpJiis SpaUniizani — the 

 respective forms being shown in Plate VIII., figs. 46 and 47 

 for the former and 48 for the latter. Moreover, the somewhat 

 abrupt narrowing of the tip in Spirograpliis Spallanzani is 

 diagnostic. 



The anterior hooks have a similar arrangement to those in 

 Sahclla, and in minute structure (Plate VIII, fig 49) are closely 

 allied to those of the Italian form, with which it has just been 

 contrasted, except that the crown above the great fang is more 

 distinctly serrated. The same features are shown in the 

 posterior hooks. 



The tube is composed of tough secretion having at the wider 

 or lower end a few fragments of shells and coarse sand, the 

 greater part, however, being bare. Above the middle this 

 horny coat has a thick investment of muddy sand with here and 

 there a shell-fragment. This leads to the upper region which 

 is composed for the most part of muddy sand with only a thin 

 lining of secretion. On the French shores De St. Joseph* has 

 found tufts of Aniathia Icndigcia growing on the posterior end, a 

 feature observed in the tubes of other forms, such as CJiaioptcrns 

 and Thclcpns, which are frequently feathered with graceful 

 zoophytes. 



This beautiful Sabellid, originally found on the beach at 

 South Devon by the indefatigable Montagu, appears according 

 to De St. Joseph, to live in colonies on the French shores, and 

 probably also in South Africa, the young attaching their tubes 



*Bollet, d. Soc. Adriat. d. Sc. Nat. viii., p. 296 [pik De St. Jiiscph) also List 

 Zcit. f. w. Zool. xlix'., p. 248-286, Taf. iv. ancl v. 



