2 Fiof. M'Intosli's Notes from the 



prociared on both shores of Ireland, a form in which the 

 head has a rounded median lobe projecting in front, supported 

 by two lateral (peristomial) lobes. Two or four eyes occur 

 at the posterior border, a short median tentacle on the pro- 

 stomium, and a median lidge ends posteriorly in a short 

 process. The body is like that of a typical Spio, is about 

 3 cm. long and 1-2 mm. broad, with 85 to 90 segments 

 (Mesnil), ending in a dorsal anus with four foliaceous 

 cirri. The colour is of a salmon-tint, with red lines from 

 the blood-vessels, and dark brown pigment in transverse 

 rows on the segments. The first foot bears a ventral 

 tuft of finely tapered bristles with very narrow wings, 

 and a large branchia which overlaps that of the opposite 

 side. At the tenth foot (PI. 1. fig. 6) the ventral 

 lamella is elongated vertically, its upper margin being 

 deepest, and separated by a narrow cleft from the dorsal 

 lamella, which fuses with the edge of the branchia. The 

 bristles are typical. Winged hooks appear on the eleventh 

 foot, and they have a bold curve at the junction of shaft 

 and neck, then diminish upward to the main fang, which is 

 long, sharp, and comes off at more ti)an a right angle with 

 the neck. A single spike occurs on the crown above it. 



In the thirty-first "Notes'^ in the 'Annals'* for February 

 1909, some remarks were made on "a form apparently 

 falling under the Nerinides of Mesnil,'" from the ' Porcu- 

 pine ' Expedition of 1870, and which had long been named 

 Scolecolepis, H. This form, as Mr. Southern f truly says, 

 is not a Nerinides, and diflers from two species of Nerinides 

 which he has been fortunate in securing on the West Coast 

 of Ireland, viz. Nerinides longirostris, De Quatrefages %, as 

 more clearly desciibed by De St. Joseph §, and Nerii.ides 

 tridentata, Southern. The former, Avhich reaches 10 cm. in 

 length and 8 mm. in breadth, at first sight mimics Nerine 

 foiiosa, Sars, yet differs in having a branchia on the first 

 segment besides a dorsal and a ventral setigerous process 

 with bristles. The head is acutely pointed and has a median 

 ridge or keel, running back to the third segment, with four 

 eyes in a square; whilst the peristomial segment bears a 

 pair of short golden-yellow tentacles, each with a ciliated 

 groove. Hooks with a single spike above the main fang 

 appear in the ventral division between the thirty-third or forty- 

 fifth segment, and are accompanied by a few wingless bristles. 



• Ser. 8, vol. iii. p. 175. 



+ Proc. R. Irish Acad. vol. xxxi. no. 47, p. 97. I am indebted to 

 Mr. Southern for kindly forwarding examples of his new aiid rare forma, 

 t Annel. i. p. 444, and previously in 1843 (Mog. Zool.;. 

 § Ann. Sc. nat. 7<^ s6r. t. xvii. p. 74, pi. iv. figs. 86-90. 



