LAGENINAE 361 



Family LAGENIDAE 



Sub-family LAGENINAE 



Genus Lagena, Walker and Boys, 1784 



169. Lagena globosa (Montagu). 



Serpiihi [Lagena) lacvis globosa, Walker and Boys, 1784, TMR, p. 3, pi. i, fig. 8. 

 Vermiculmn globosuin, Montagu, 1803-S, TB, 1803, p. 523. 

 Lagena globosa, Brady, 1884, FC, p. 452, pi. Ivi, figs. 1-3. 



Eighteen stations : 48, 51 , 228, 236, 388 ; WS 71, 83, 88, 89, 90, 92, 93, 95, 221 , 245, 248, 408, 433. 



As usual, extremely variable, the best specimens at WS 83 and 88. The variation 

 extends to the surface of the test which varies from a smoothly hyaHne to a rough "matt" 

 surface. Ento-ecto-solenian individuals at WS 83, 88. Practically all the forms of 

 aperture figured by Brady (B. 1884, FC, p. 441) can be found among our specimens. 

 There is a Type tube in Paris labelled Entosolenia globosa, from the Falkland Islands. 

 This was probably added to the d'Orbigny collection at a later date as it is endorsed 

 "Williamson, Britisch(«c) Forams. etc...." It contains a sHghtly compressed but other- 

 wise typical L. globosa. 



169 A. Lagena laevigata (d'Orbigny) (Plate X, fig. 4). 

 Oolina laevigata, d'Orbigny, 1839, FAM, p. 19, pi. v, fig. 3. 

 One station : WS 248. 



The single specimen which we figure has a solid conical neck of clear shell substance, 

 and a basal stud of similar nature, both contrasting strongly with the milky white colour 

 of the globular test. It is 0-50 mm. in length and 0-35 mm. in breadth. In spite of these 

 dimensions we attribute our specimen to d'Orbigny's species which was described as 

 "rare" in the Falkland Islands. It certainly agrees very well with d'Orbigny's de- 

 scription of his species — "un pen acuminee en avant, arrondie en arriere, . . .ouverture 

 etroite, placee a I'extremite d'un prolongement conique, et comme bordee par une 

 partie plus transparent que le reste". D'Orbigny's description and figure, so far as the 

 oral half is concerned, would very well correspond with our specimen. The agreement 

 is not so complete as regards the basal portion, his figure having a line across the 

 rounded base which suggests a Glandulifia. But this may be an attempt to reproduce a 

 solid basal stud such as our specimen possesses. The size of the original type is given 

 as I mm. diameter, the length not being stated. This is about a third of the size of our 

 specimen. 



There is a tube among the Paris Types labelled Oolina laevigata, " lies Malouines ", 

 which does not represent the specimen from which d'Orbigny's figure was drawn. It is 

 undoubtedly Lagena globosa, being quite globular, hyaline, at the oral and aboral ex- 

 tremities, but with a band of highly perforated shell substance surrounding its greater 

 diameter and giving a false impression of a second chamber at the base. 



The Oolina laevigata of d'Orbigny has in our opinion no zoological specific value, but 

 is merely one of the many variations of the ubiquitous species Lagena globosa (Montagu). 



