liUDDE-LUND, ISOPODÄ. H 



I liad iiol ;il lluil lime seen any Armadülidimn wilh the laminate appendages 

 lo llic anlerior truncal-legs, wliicli lorin a niarsupium, iioither Iiad I met any young wilh 

 only six truncal segments, and Ihis was one of the reasons why I placed Ihis large 

 genus, oertainly wilh some douhl, ncarest lo Armadülo. Since I have found Ihis 

 niarsupium on several species of ArmadilUdium, and have i'or Ihis reason and also on 

 account of the formation of the mouth-parts laier, 2 p. 37, referred Ihis genus to the 

 Oniscoidea. 



Willi the exception of the species of the genus ArmadilUdium, I have not, how- 

 ever, found Ihis niarsupium on any of the species of the genera referred by me to the 

 Armadilloidea. It may he added, however, that a negative proof is no definite proof, 

 and as I have not had lülly developed feraale specimens of several species of othcr 

 genera for examination, neither I am able to prove that a marsupium is found there. 



As this character is found on Ihe majority of the Marine-Isopods that have been 

 examined, and which appears lo be of very great importance, it will be of importance 

 to have delinilivily shown, whelher the biological conditions, that have apparenlly shown 

 themselves with the well develoi)ed abilily of conglobalion, has acted as a hinderance in 

 the develojiment of the marsupium. 



Two genera which I have previously referred with some doubl to the subfamily 

 Oniscinae, Pseudarmodülo Saussure ^ and AcantJwniscus KinahaN", I now refer to the 

 subfamily Spherülomnae. Of the Pseudarmadülo I have had opportunity of examining 

 specimens in the Berlin Museum; Aeantlionisms I only know froni description and 

 figures of H. Richardson, bul certain poinls here give me the Impression, that it would 

 be correct to place it among the Spherüloninae. It is also certain that Anaphüoscia^ 

 found by Racovitza in a cave on the Island Malorca should be placed in the same sub- 

 family. 



Diploexochus. 



Diploexochus bituberciilatus n. sp. 



Tab. 11, Fig. 1—8. 



Ovalis, tuberculatus; trunci segmentum 1. tuberculis duobus majoribus rolundis in 

 medio dorsi positis, cetera segmenta trunci tuberculis oblongis in dimidia posteriore 

 excelsiore parte segmentorum transversim positis ornata; cetera superficies dense et 

 minute squamata. Oculi majores; ocelli magni, numero c. 12. Anten nee breves, ler- 

 tiam corporis partem longitudine subfequantes; flagellum scapi articulo 5. nonnihil bre- 

 vius, articulo priore altero multis parlibus breviore. Episloma convexiusculum, dimidia 

 superiore parte reflexum, margine superiore frontem vix superante. Linea marginalis 

 verticalis port rrassa, utrinque ante oculos incurva marginem superiorem epistomatis 

 allingens. Trunci segmentum 1. margine laterali crasso, per totam longitudinem sulcalo, 



^ H. DE Saussure: M(5moire.s p. sei-v. a l'hist. nat. du Mexique, de.s AntiUes et des Etats-Unis. I. 

 I.ivr. Crustaces. Paris 1858, p. 67. — B.-L. 1 p. 41. 



* KiNAHAN in Proc. Diibl. Univ. I. p. 197. — H. Richardson: Proc. Unitcd-St. Nat. Mus. XXXVI p. -131. 

 ^ Hacovitza in Aix-li. Zool. exper. gener. -4 S. VII p. 182. 



