NEMERTEANS. 



By R C. PUNNETT, B.A. (Cantab.). 



With Plates IV. and V. 



To judge from our previous knowledge of the Nemerteans of the Indian and Eastern 

 Pacific Oceans, the collection of these worms made by Mr Stanley Gardiner is, on the 

 whole, much what one would have been led to expect. The genera Eupolia and Drepano- 

 fhorus are well represented, as also is the family of the Lineidae. The curious genus 

 Prosadenoponts, first met with at Amboina, is recorded for the second time only. The 

 collection also includes examples of two of the most widely distributed Nemerteans in this 

 part of the world, i.e. Eupolia hemprichi, and Lineus albovittatus. The collection is however 

 noteworthy in that it adds to the fauna of these seas the first Mesonemertean recorded. 

 Cephalothrix aliena belongs to a genus, which has hitherto been recorded from the North 

 Atlantic and from the North-west Pacific' only. It is however not unlikely that, as the 

 Nemertean fauna of the various regions of the globe becomes better known, this genus 

 may turn out to be almost cosmopolitan. Almost all the species are excellently preserved, 

 and I would take this opportunity of thanking Mr Gardiner for the energy and trouble 

 expended in forming this collection. In the following pages a brief diagnosis of each new 

 form is given, and this is followed by a more complete description. At the end of the 

 paper I have appended a brief synopsis of the genus Drepanophorus. 



SYSTEMATIC LIST. 



I. Protonemertini^ (None.) 



II. Mesonemertini. 



Fam. Cephalothricidae. 



1. Cephalothrix aliena, n. sp. Comparatively short, stout form with thick epithelium 

 and basement membrane. Mouth beneath brain. No eyes. . . . p. 102 



' Coe, W. R., Proc. Wash. Acad. Sc, 1901, p. 19. Monograph, 1895. 



" The classification is that given by Burger, Naples 



