76 The Irish Naturalist. February, 



several rows of dark glands, in each segment. Ventral setae, 7-9, occa- 

 sionally 10 ; lateral setae, 5-8. The dorsal pores commence in the front 

 of the 7th segment. The girdle occupies segs. 12 -£ 13. It is very pro- 

 minent, and composed of closely-set glands. The brain (PI. 19, fig. 13 A) 

 projects in front. Bretscher describes it as concave. The salivary 

 glands have numerous small, short branches. The dorsal vessel rises in 

 the 22nd segment. The two anterior branches originate separately 

 The spermatheca (fig. 13 B) has two stalked diverticula, which curve in 

 towards the duct. There are no glands at the external openingofthe 

 duct. 

 Distribution.— Switzerland. 



Fridericia glanduiosa, n. sp. 



Only one specimen of this worm, fortunately mature, was obtained in 

 Octobeiv 



Length, 25 mm. Setae, 6-8 in a bundle The worm is very opaque, 

 and the internal organs are difficult to observe. The opacity is due to 

 the large number of dark glands on the epidermis. In each segment 

 (PI 18, fig. 2 B) there are about 7 rows of minute dotted glands, alternat- 

 ing with rows of large irregular glands. These glands are very 

 numerous and conspicuous on the 4th and 5th segments, in the vicinity 

 of the openings of the spermathecae. The girdle occupies segments 

 I2-| 13. It is covered w r ith a mosaic pattern of granular glands, roughly 

 arranged in row r s, with clear intermediate spaces. The brain (fig. 2 A.) 

 is 1^ times as long as broad, projecting in front, and convex behind. 

 The coelomic corpuscles are oval to round (fig. 2 C), finely granular } 

 The salivary glands were not observed with certainty, but they appeared 

 to be long and tubular, apparently dividing into two long branches, 

 which stretched into the 6th segment. The nephridia (fig. 2 E) are 

 composed of a large anteseptal portion, and a somewhat larger post- 

 septal. The duct rises near the septum, and is longer than the post- 

 septal. The spermatheca (fig. 2 D) has two large-stalked diverticula 

 swollen at the distal end. They curve round. aw r ay from the duct, and 

 lie alongside the ampulla. The latter is long, and not very wide. The 

 duct is dotted with flat, unicellular glands. There are 110 glands at the 

 opening. The sperm-funnel is several times longer than broad. The 

 sperm-duct ends' in a large prostate. 



This species resembles F. polychata more than any other. It is distin- 

 guished from those members of the genus which have two-stalked 

 diverticula by (1) the number of setae. (2) glands of the epithelium, (3) 

 salivary glands, (4) form of the spermathecae. 



Fridericia galba (Hoff.). 



1898. Friend, Irish Naturalist, vol. vii., p. 196. 

 1900. Michaelsen, ' Tierreich," p. 101. 



This species has already been recorded from Ireland by Friend. It is 

 fairly common here. In all the specimens I have examined, the duct of 



