DESCRIPTIONS OF GENERA AND SPECIES 353 



species was afterwards given by UDE (1). UDE states that the description of the setae given by EISEN 

 was not correct ; EISEN figured (13, PI. iv. fig. 7 c) the setae of the worm as like those of Pachydrilus. 

 MICHAELSEN, in commenting upon this difference from other species of the genus, remarks that the 

 arrangement is not like what is met with in the genus Pachydrilus. It is, however, more satisfactory 

 not to have to explain away a distinct resemblance in this way. 



The brain is double as long as broad (1-1-3 according to EISEN); it has a slight 

 concavity posteriorly. The oesophageal glands are completely absent ; in transverse 

 sections the end of the oesophagus is seen to project into the interior of the intestine, 

 thus forming a kind of valve. The dorsal vessel arises in segment viii ; there are 

 dilatations of this vessel in segments vi, vii, viii ; the salivary glands are present, 

 but their form is not described. The spermathecae are furnished with glands at 

 their external pore ; they are dilated into a pouch at the other end. 



(4) Henlea puteana (VEJDOVSKY). 



Enchytraeus puteanus, VEJDOVSKY, SB. Bohrn. Ges., 1877, p. 301. 

 Henlea puteana, MICHAELSEN, Abh. Nat. Ver. Hamb., 1889, p. 34. 



Definition. Length, 15 mm.; number of segments, 20 ; setae of ventral bundles, 8-10, 

 of dorsal, 5-7. Two pairs of spermathecae. llab. Bohemia. 



This species is at once to be distinguished by the presence of two pairs of 

 spermathecae situated in segments iv, v. This is unique, not only in the genus, but 

 in the family. The dorsal vessel arises in segment ix ; this and the two segments 

 in front have each a dilatation of the dorsal vessel. Nothing appears to be known 

 as to the presence of oesophageal glands, or as to whether there is that marked 

 distinction between oesophagus and intestine which characterizes other species of the 

 genus. Nor are salivary glands mentioned. Considering the inequality of the setae 

 in the dorsal and ventral bundles, it may perhaps be doubted whether the species is 

 really a member of the genus Henlea ; I leave it there in deference to the opinion 

 of MICHAELSEN. 



Genus ANACHAETA, VEJDOVSKY. 

 Syn. Achaeta, VEJDOVSKY. 



DEFINITION. Setae absent ; only represented by large gland-cells. Head pore at the 

 tip of the prostomium ; no dorsal pores. Dorsal vessel arises in front of the 

 clitellum; blood colourless. An unpaired salivary gland opens behind the 

 pharynx. Spermathecae not opening into the gut. 



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