1. Tissue organization ofFarrea occa (Porifera, Hexactinellida)

   • Henry M. Reiswig
   • Dorte Mehl

   OriginalPaper Pages: 301 - 311

2. Arm anomalies: cases of supernumerary development and bilateral agenesis of arm pairs in Octopoda (Mollusca, Cephalopoda)

   • Ronald B. Toll
   • Lynetta C. Binger

   OriginalPaper Pages: 313 - 316

3. The hemocytes of the centipedeLithobius forficatus (Chilopoda, Lithobiomorpha)

   • Lutz Nevermann
   • Willi E. R. Xylander
   • Gerhard Seifert

   OriginalPaper Pages: 317 - 327

4. Distribution of microfilaments and microtubules inHomarus pleopod tegumental glands (Crustacea, Decapoda)

   • P. Talbot
   • H. Al-Hajj
   • D. Howard

   OriginalPaper Pages: 329 - 338

5. Functional correlates of differences in bone density among terrestrial and aquatic genera in the family Mustelidae (Mammalia)

   • F. E. Fish
   • B. R. Stein

   OriginalPaper Pages: 339 - 345

6. Ultrastructure of spermatogenesis and sperm ofMulticotyle purvisi (Plathelminthes, Aspidogastrea)

   • N. A. Watson
   • K. Rohde

   OriginalPaper Pages: 347 - 356