NO. 1369. XI TURA L IIISTOR Y OF THE ISOPOD 1- UK lIARlJSO.S. 077 



Archipelago. The specimen differs from the description in liaving 

 shorter antenna?, which do not extend beyond the fifth thoracic seg- 

 ment. Difference in sex may account for this, as it has lieen shown 

 that in this genus the anteiuuv of the females arc shorter than those of 

 the males. 



Family ONISCID.E. 



PORCELLIO LiEVIS Latreille. 



Porc^///o Z.ms Latreille, Hif<t. Crust. Ins., VII, p. 4tj. — Leach, PMinb. Encyrl., 

 VII, p. 406.— MiLXE Edwards, Hist. Nat. des Crust., Ill, p. 169.— Bcdde- 

 LuND, Nat. Tidsskrift, (3), VII, p. 2:5H; Crust. Isop. Terrestria, 1«85, pj). 

 138-141. (See Budde-Lund for further synonymy. ) 



Locality. — Aiea, Oahu. 



EPICARIDEA or BOPYROIDEA. 



Family DAJID^. 

 ZONOPHRYXUS Richardson, new genus. 



Type. — Zonophryxus retrodens Richardson, new species. 



Bod}" of female provided on the ventral side with a border wliicli 

 surrounds it on all sides, and which is wider in the anterior or cephalic 

 region. The posterior portion of the marginal l)order is provided 

 with nine small triangular processes, four on either side of a mcMlian 

 one, and undoubtedh' indicates five coalesced abdominal segments. 

 Five pairs of legs present on the anterior half of the ventral side. 

 Five pairs of incubatory lamelhe on eithei- side of the ventral surface 

 meet in the median line, the tifth pair being narrow and elongate and 

 concealing the second and third pairs, which are very small, ami :i part 

 of the fourth pair. Dorsal surface convex, with only faint traces of seg- 

 mentation, the boundaries of the three divisions of the body not being 

 indicated. Small incisions at the side of the anterior half of the ))()dy 

 on the marginal border probal)ly indicate the i)lace of separation of 

 the head from the thorax, the first thoracic segment from the second, 

 and the second from the thli-d. 



Male with the first thoracic segment fused with the head. All seven 

 pairs of legs present. Segments of abdomen consolidated into one. 



This genus differs from all the oflnM- Ihijid;*' in having the marginal 

 border surrounding the body and in having the nine triangulai- proc- 

 esses on the i)osteri()r margin of this border, representing five 

 coalesced abdominal segments. 



It differs from Dajxs Kroyer in having th(> segments of the abtlo- 

 men fused in the female; in having but slight tiaces of segmentation 

 in the thoracic region, and in both male and female lac-king uropoda. 

 It differs from BnDicJuophry.ms C aullery in liaving live pairs of legs 



