THE MOUNT DESERT REGION 247 



Desmosomatidae 

 Desmosoma G. 0. Sars 

 D. LOBicEPs Blake. (Blake, 1929, p. 26, fig. 13.) Taken on 

 sandy mud, in 40 feet of water. Station : D 29. 



Superfamily BOPYROIDEA 



Bopyridae 

 Hemiarthrus Giard and Bonnier (Phryxus) 

 H. ABDOMiNALis (Kroyer). (G. 0. Sars, 1898, p. 215, pis. 

 90, 91.) Found twice on Spirontocaris pusiola. It is note- 

 worthy that this host is the only species of its genus which 

 breeds in this region during the summer. Stations : D 4, 18. 



BoPYROiDES Stimpson 

 B. HippoLYTES (Kroyer). (G. 0. Sars, 1898, p. 199, pi. 84, 

 fig. 2.) Taken twice as a branchial parasite of Spirontocaris 

 fabricii. Stations : D 117, 132. 



Superfamily ONISCOIDEA 

 The following species are terrestrial forms. 



Tribe ATRACHEATA 



Trichoniscidae 



Trichoniscus Brandt 



T. (Trichoniscus) demivirgo Blake. (Blake, 1931, p. 341, 



fig. la-h.) A gregarious species found in damp places under 



logs and dead leaves. Corfield, Duck Brook Path, Lake Wood. 



Tribe PLEUROTRACHEATA 



Oniscidae 

 Oniscus Linne 

 0. ASELLus Linne. G. 0. Sars, 1898, p. 171, pi. 75.) Cor- 

 field, Duck Brook Path, Bar Island. 



