474 MR. A. W. WATERS ON 



E. — Lastly, Mevipea cyathtis Wy. Thomp. lias only one chitinous 

 tube (Pi. LXIX. fig. 13). In Scrupocellaridpe there is, in some 

 species near the dist;il end, a long body which may be folded 

 back as in *S'. ferox And. (PI. LXVIII. fig. 14), or it may be 

 very long, extending to the proximal end of the zooecium as in 

 M . JiagelUfera Busk. There is much to suggest that this functions 

 as a testis, and that it should be compared with the organ in 

 Flusira aoyssicola Sars, and Crihrilina figtdaris Johnst. 



The classificatory groups may now be considered : — 



1. Oanda. Articulation simple as A, p. 473 ; ovicell smooth, 

 imperforate; vibracula have the setae serrate. Two vibracula at 

 a bifurcation. Levinsen considers that the ovicell is enclosed in 

 the widened proximal half of the avicularium, whereas I should 

 say that the avicularium is on the ovicell. 



2. Oaberea. Articulation internal tubes, ovicell imperforate, 

 vibracula with smooth setae. 



3. ScRUPOCELLARiA (div. 1). Articulation as B, p. 473 ; ovicell 

 smooth, imperforate, usually with two vibraciila at a bifurcation ; 

 setae smooth. This includes S. delilii And., S. scruposa L., 

 S. scabra Van Ben., iS*. cervicornis Busk, S. rtiacandrei Busk, 

 S. orniiiiorhynchus W. Th., S. so^upea var. dongolensis Waters. 

 {^S. scabra has sometimes one vibraculum at a bifurcation.) 



4. ScRUPOCELLARiA (div. 2). Articulation as B, p. 473 ; ovicell 

 perforated, usually one vibraculum a,t a bifurcation, setag smooth. 

 This includes S. heriholettii Aud., S.jolloisii Aud., 8. mansueta 

 "Waters, *S'. reptans L., *S'. ferox Busk, S. ohtecta Haswell, and 

 probably S. porteri MacG., and S. occidentalis Trask. 



5. BuGULOPSis. Articulation as C, p. 473 : ovicell imperforate, 

 no vibra,cula. Example, B. peachii Busk, I follow Levinsen in 

 using this genei'ic name for the present, but have not had the 

 opportunity of fully studying the genus. 



6. Menipea (div. 1). Articulation as D, p. 473 ; ovicell truly 

 endozooecial, showing no external diflference, no vibracula ; 

 avicularia sometimes suboiul and sometimes lateral, short inter- 

 nodes. This includes Af. cirrata Ell. & Sol., M. crystallina Gray, 

 M. cervicoimis MacG. 



7. Meistipea (div. 2). Articulation as E, p. 474. Two zorecia 

 in an internode, scutum directed downwards from the distal end 

 of the zooecium *. Possibly a new genus will have to be made for 

 this. This includes M. cyathiLs. 



Flabellaris. Levinsen leaves in Menipea species that cannot 

 be referred to any other of the genera, and puts under it what I 



* Specimens of Nenipea fueqensis Busk and M. aruleata Ruslc have cases of one 

 zooecium of a new branch arrowing- from the distal end of the terniiiial zooecium and 

 also one from the side of the lower zooecium. 



