SOLENOQASTRES. 
Verm, 21 
Solenopus appears to be the same as Neomenia, TuUberg ; the results 
of the investigation disclose many points of disagreement between the 
observers ; Koren & Danielssen regard the form as Molluscous, and 
describe as new species S. affinis^ S. dalyelli, S. incrustatus, S. margari- 
taceus^ S. borealis, and S. sarsi. [Ihering points out that Solenopus was 
published by Sars without any diagnosis ; Morphol. JB. iv. 1878, 
p. 151.] 
Graff has examined Neomenia carinata, TuUberg : he finds that the 
lateral nerve trunks are given off from lateral ganglia (fig. 1), and not 
(TuUberg) from the supra-cesophageal ganglion ; the commissures are con- 
nected by a number of lateral trunks, of the existence of which TuUberg 
was in doubt. The special canal for the longitudinal nerve-trunks 
observed by TuUberg, is said not to exist. In general, however, the 
observations of the two anatomists agree. In Chcetoderma, Graff has now 
observed an oesophageal ring ; the suboesophageal ganglia are smaller than 
in Neomenia. By the aid of transverse sections, a rudimentary ventral 
groove has now been observed (fig. 2). Chcetoderma is nearer to the 
Vermes, Neomenia to the Mollusca ; this is most noticeable in the 
characters of one of the two forms of connective tissue observed in the 
latter genus. 
Chcetoderma nitidulum, Lov. : G. A. Hensen’s paper in N. Mag. Naturv. 
has not been seen by the Recorder. 
