438 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Family CATENICELLIDAE Busk, 1852 



The colonies are radicelled , articulated, ramified. Each segment 

 is formed of 1, 2 (biglobulus), 3 (triglobulus) zooecia. The zooecia 

 are connected with a number of lateral chambers; suprascapular, 

 scapular (avicularian of Harmer and Waters), infrascapular and pedal. 

 The frontal is porous or garnished with fenestrae or vittae. The 

 gonoecia are surmounted by endozooecial ovicells. There is a 

 compensatrix; opercula and avicularia are present. 



The abzooecial sides are the outer sides of the two zooeeia in a 

 bizooecial segment and the adzooecial sides are the inner sides. 



The fenestrae are the chitinous interruptions on the calcareous 

 frontal of the cells. The vittae are sunken perforated grooves in the 

 calcareous wall and along each groove there is a 

 cylindrical tube and within T:his, from the pore- 

 tubes (the perforations just mentioned) organic 

 cords spread out and reach the upper free surface 

 at definite spots or pores. (Waters.) 



The sternal area is the space (cryptoeyst of Lev- 

 insen) occupied by the fenestrae. The gonoecia 

 are cells without polypide and having only ovaria. 

 There are endozooecial ovicells in this family. 



Fig. 172.— Genus 

 Dittosaria Busk, 

 1886 



Genus VITTATICELLA Maplestone, 1900 



Catenaria Levinsen, 1909; Catenicella Blainville, 1830; Cal- 

 loporella MacGillivray, 1885 



Dittosaria we- 

 thereli Busk, 1866. 

 Dorsal and lateral 

 views of a seg- 

 ment X25, show- 

 ing the arrange- 

 ment of the zo- 



The ovicell occurs in a node with other zooecia, 

 between two zooecia in a straight and longitudinal 

 line. It is partly imbedded in the distal zooecium 

 and is surrounded by beaded structure. The 

 frontal surface is provided with extremely fine 

 scattered pores. The aperture, which has a con- 

 cave, thickened, protruding, proximal rim, has two 

 oecia. (After well developed conspicuous hinge-teeth and is closed 

 Gregory, 1892.) [\ mx \\ x bv three (one distal and two proximal) cal- 

 Eocene of Eng- , ., 



. , careous processes, springing irom its inner maririn 



land. l . . , 



and meeting in the center. Vittae. 



Genotype.— Vittaticella (Eucratea) contei Audouin, 1826. 



Range. — Miocene of Australia — Recent. 



The word "Catenaires" of Savigny, 1811, is a qualificative and not 

 a generic substitive. Calloporella is preoccupied. Catenicella is 

 now reserved for species incompletely studied. 



Genus CATENICELLOPSIS J. B. Wilson. 1880 



Ovicell as in Vittaticella but the ovicell is perforated all over. \"n tae. 

 Genotype. CatenieeTlopsis delicatvla J. B. Wileoil, ISS'0. Recent. 



