NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
823 
Genus CONOCAYA Calvet, 1911. 
1911. Conocava Calvet, Diagnoses de quelques espeees nouvelles de Bryozaires Cyclostomes 
provenant des Campagnes scientiflques accomplies par S.A.S. le Prince de Monaco 
a bord de la Princesse Alice, Bulletin Institut oceanographia IMonaco, No. 215, p. 8. 
Zoarium conical, fixed to the substratum by its enlarged summit and increasing 
in size at the base. Lateral surface occupied in part by salient series of tubular 
A *3 
Fig. 271. — Genus Trochiliopora Greg- 
ory, 1909. 
Side and top views, X 3, of the type 
of the genus Trochiliopora humei 
Gregory, 1909, from the Chalk of 
England. 
Fig. 272. — Genus Conocava Cal- 
vet, 1911. 
Zoarium of Conocava ricli- 
ardi Calvet, 1911, X 22. 
zooecia, arranged side by side, and according to as many generatrices of the colonial 
cone as there are series, these being separated from each other by depressions where 
the intermediate pores are found. (Calvet.) 
Genotype. — Conocava richardi Calvet, 1911. 
Range. — Recent. 
LEIOSOECIIDAE, new family. 
The ovicell is a large, orbicular, smooth, salient swelling, elevated above a 
shallow excavation and obstructing a certain number of tubes. 
This family offers the greatest analogy with that of the Plagioeciidae with 
which it will be necessary to join it if we find intermediate forms. It has only 
appeared to differ from it in a greater constancy of the orbicular form of the 
ovicell and in the presence of mesopores. The ovicell of the Ceiclae is also very 
close, as is that of Entalophora ramossissima D’Orbigny, 1851. 
LEIOSOECIA, new genus. 
Greek : teois, smooth, in allusion to the aspect of the ovicell. 
The tubes are cylindrical. The mesopores are parietal and regular. 
Genotype. — Leiosoecia- ( Multicrescis ) parvlceUa Gabb and Horn, 1860, 
Maastrichten. 
