STErCTUBE OF THE PHILACTOL-EMATOXTS POLYZOA. 



489 



16. LiMNOGONUS (?) LUBRicus, n. sp. Limnogono (?) loto similli- 

 mus sed minor, pronoto vix constricto, lateribus corporis baud vel 

 obsoletissime nigro notatis, femoribus anticis linea longitudinali pos- 

 tica vice macula3 fuscaj ornatis. Long. 5, lat. 1^ millim. 



Hal. Brasiliam borealem. (Manaos, August 1875, " at light," 

 J. W. R. Trail.) 



Naucoiiid^. 



1/. Pelocoris procurrens, n. sp. Pallide brunneo-testaceus, ca- 

 pitis postici et pronoti maculis nonnuUis irregularibus, connexivi 

 signaturis, femorum anticorum supra macula irregulari et posterius 

 basin versus vittula brunneo-fuscis ; capite pronotoque obsolete, hujus 

 disco distinctius et transversim rugosis ; prouoti marginibus laterali- 

 bus angustissime reflexis; bemelytris minutissime punctulatis. 

 long. 5, lat. 3^ millim. 



Sal. Brasiliam borealem. (Montealegre, 1873, J. W. H. 

 Trail) 



Belongs to the same section of the genus as linotulatus, Stal ; 

 but is very much smaller and otherwise different. 



The Anniyersaet Addeess or the Peesident, 

 Professor Allman, M.D., LL.D., P.E.S. 



Becent Progress in our Knoidedge of the Structure and 

 Development of the FTiylactolcematous JBolyzoa. 



[Bead May 24, 1878.] 



Continuing to adopt the practice which I have hitherto regarded 

 as the most useful — that of making the Addresses delivered at 

 the Anniversary Meetings of the Society reports of the progress 

 of discovery in certain departments of zoological research — I 

 have this year chosen for my subject the structure and develop- 

 ment of the Phylactolaematous Polyzoa, making the report ex- 

 tend over a period which dates from the publication of my own 

 early researches on this group *. 



Unless we include among them the genus Rhaldopleura^, all 

 the Phylactolsemata are inhabitants of fresh water. One of their 



* A Monograph of the Freshwater Polyzoa. Published by the Bay Society, 

 1856. 



t I do not believe that Hhahdo'pleura has any real claims for admission 

 into the group of the Phylactolajmata. The characters which at first sight 

 LINN. JOUEN. — ZOOLOGY, VOL. XIV. 36 



