NATURAL SCIENCES OP PHILADELPHIA. 493 



2. F. Z e b u e n s e , Chenu, sp. 



Aspergillum Zebuense, Chenu, 111. Conch. Asp. p. 3, t. 3, f. 3. 



Catlow, Conch. Nomenc. p. 1, 1845. 

 Reeve, Monog. Asp. t. 3, f. 8, 1860. 

 Brechites Zebuensis, H. and A. Adams, ii. p. 339, 1856. 

 Aspergillum Philippinense, Chenu, 111. Conch. Asp. p. 3, t. 4, f. 7. 



Catlow, Conch. Nomenc. p. 1, 1845. 

 Reeve, Monog. Asp. t. 3, f. 10, 1860. 

 Brechites Philippinensis, H. and A. Adams, Genera, ii. p. 339, 1856. 

 Description. "E. testa valvis oblongo-ovatis, postice subexpansis ; vagina, 

 arenulas agglutinante, superne subattenuata, utrinque longitudinaliter sul- 

 cata, inferne abrupte contractu ; fimbria, sub-irregulari, tubulis distinctis 

 liberis ; disco parvo, perforationibus perpaucis, tubulosis." Reeve. 

 Rah. Zebu, Philippines. Mus. Cuming. 



This, and the preceding, may prove to be one species ; it is distinguished 

 from F. agglutinans, principally by the much larger number of tubes on 

 its disk, and by the larger size of its tube. 



Subgenus Arytene. 



3. F. Recluziana, Chenu, sp. 



Aspergillum Recluzianum, Chenu, 111. Conch. Asp. p. 4, t. 4, f. 1, la. 



Catlow, Conch. Nomenc. p. 1, 1845. 

 Brechites Recluzianus, H. and A. Adams, Genera, ii. p. 339, 1856. 

 Aspergillum incrassatum, Chenu, 111. Conch. Asp. p. 4, t. 4, f. 2. 



Catlow, Conch. Nomenc. p. 1, 1845. 

 Reeve, Monog. Asp. t. 4, f. 15, 1860. 

 Brechites incrassatus, H. and A. Adams, Genera, ii. p. 339, 1856. _ 

 Description. "F. testa valvis oblongo-ovatis, vaginje prolatione bifurcata 

 partim indutis ; vagina mediocri, subcontorta, calculos parvos sparsim aggluti- 

 nante ; fimbria plus minus irregulariter distorta, tubulis hie illic dichotomis ; 

 disco parvo, perforationibus paucis, valde irregularibus." Reeve. 

 Hab. ? 



Dr. Gray considers F. Recluziana a variety of the following species, 

 F. tuberculata;the tubuli in the latter are, however, very regular, and but 

 little spread out, showing a marked contrast to the rather irregular fringe of 

 this pecies. 



Mr. Reeve quotes F. Recluziana as a synonym of F. incrassata, in 

 which he is incorrect, for the former having a prior place and figure in Chenu 's 

 Monograph, must, of course, be retained as the name of the species. 



4. F. tuberculata, Chenu, sp. 



Aspergillum tuberculatum, Chenu, 111. Conch. Asp. p. 3, t. 2, f. 3. 



Catlow, Conch. Nomenc. p. 1. 1845. 

 Reeve, Monog. Asp. t. 3, f. 16, 1860. 

 Brechites tuberculatus, H. and A. Adams, Genera, ii. p. 339, 1856. 

 Fceda (S. G. Arytene,) tuberculatum, H. and A. Adams, Genera, ii. 



p. 650, 1858. 

 Arytene tuberculata, Gray, Zool. Proc. p. 313, 1858. 

 Aspergillum ornatum, Chenu, 111. Conch. Asp. t. 4, f. 3. 



Catlow, Conch. Nomenc. p. 1, 1845. 

 Brechites ornatus, H. and A. Adams, Genera, ii. p. 339, 1856. 

 Aspergillum clavatum, Chenu, 111. Conch. Asp. p. 4, t. 4, f. 4. 



Catlow, Conch. Nomenc. p. 1, 1845. 

 Reeve, Monog. Asp. t. 4, f. 14, 1860. 

 Brechites clavatus, H. and A. Adams, Genera, ii. p. 339, 1856. 

 Description. " F. testa, valvis ovatis, vagina? prolatione bifurcata partim 

 indutis ; vagina attenuata, subcurvata arenulas calculosque parvos aggluti- 



1851.] 



