248 Prof. H. Fol 071 the Family Tintinnodea. 



The cushion that surrounds the orifice is formed solely by the 

 outer layer. 



Animal short; peduncle much elongated, attached at a 

 considerable distance from the apex of the test, or even pre- 

 senting two points of attachment. Lines of cilia on the peri- 

 stome to the number of about twenty ,• body smooth. 



Length of the test 0*4 millim. ; diameter of the orifice 

 0-09 millim. 



I have met with only a small number of specimens of this 

 delicate species at Villefranche. 



Our genus, characterized as above, will in all probability 

 include: — Tintinnus inquilinus^ Schrank; T.ohliquus^ Clap. & 

 Lachm. ; T. amphora^ C & L. ; T. acuminatus^ C. & L. ; T. 

 Steenstrupiij C. & L. ; T. quadrilineatus , C. &L. ; T.subulatus, 

 Ehr. ; T. cinctus, C. & L. ; and T. urmda, G. & L. 



Perhaps it will be necessary to establish a special generic 

 division for the species with a gelatinous sheath, such as 

 Tinttnnus mucicola^ &c. 



Genus 2. ConiocyliSj g. n. 



Test with more or less marked transverse strias, impreg- 

 nated, especially in parts, with foreign mineral particles 

 agglutinated and stuck upon its outer surface ; posterior 

 extremity generally drawn out. 



Coniocylis campanula. 



Tintinnus campanula (Ehr.), Clap. & Lachm. 

 (PL XVII. fig. 5.) 



This species occurred repeatedly at Villefranche, but always 

 only a very few specimens. The cilia of the peristome 

 appeared to me to be arranged as in the other Tintinnodea. 



Length of the test 0'14 millim. ; width at the entrance 

 0-218 millim.* 



It is in this genus that we must place Tintinnus helix^ 

 Clap. & Lachm., T. annulatus^ C. & L., T. ventricosus^ C. & 

 L., and probably Stein's Tintinnopsis. 



Genus 3. Cyttaeocylis, g. n. 



Test continuous, but excavated at its outer surface by a 

 quantity of deeper or shallower pits, often pretty regular and 

 capable of giving the test the aspect of a trellis ; posterior 

 extremity generally pointed, frequently more or less turned to 

 one side. 



* [From the figure these measurements appear to have been reversed. — 

 Eds.] 



