410 A HISTORY OF KECENT CEUSTACEA 



AtJielgue iniermecUa, Hesse, 1877, on Eiijjagurus cua- 

 nensis (Thompson). 



Ailielgue Cardonce, Kossmann, on CUhanarius misan- 

 th7'oj)us, Risso. 



Athelgue loiv'fera, Hesse, 1877, on Eupagurus cuanensis 

 (Thompson), tugether with several specimens of Pelto- 

 gaster. 



Ailielgue cladophora, Hesse, 1861. 



rieuTocrypia, Hesse, 1865 The male has the pleon as 

 in Phryxus. In the female, it is stated, ' the live segments 

 of the pleon are provided each, on each side, near the 

 margin, with a branchia of oval form, filiform, thin, flat, 

 very contractile.' The sixth segment has two small ap- 

 pendages. 



Pleurocrypta gcdatece, Hesse, 1865, on Galathea squami- 

 fera, Leach. According to Giard and Bonnier the Phryxus 

 longibranchiatus of Bate and Westwood is the Phryxus 

 stage of this Pleurocrypta. 



PleuTocrypta p)orcellance^ Hesse, 1877, on Porcellana 

 longicornis (Linn.). 



Pleurocrypta sfrigosa, Giard and Bonnier, 1890, on 

 Galathea strigosa, Fabricius. 



Pleurocrypta Render sonii, Giard and Bonnier, 1890, on 

 Galathea dispersa. Bate, from the Clyde. 



Palcegyge, Giard and Bonnier, 1888. The male has 

 the pleon composed of well-separated segments, each on the 

 ventral side carrying rudiments of pleopods. The authors 

 in 1890 suggest that ifc will probably be necessary to 

 make two sections of the genus, one characterised by the 

 plates of the pleon in the female being furnished with 

 warts or tubercles, and including the species ^^arasitic on 

 Ano7nala and Thalassinida, the other characterised by the 

 appendages of the pleon being entirely smooth, and in- 

 cluding the species parasitic on the Pvl-iiphota (see page 

 224). For the former division the genus Pseudione, Koss- 

 mann, seems to be the appropriate name, and for the latter 

 Palcegyge. As the name implies, this genus is regarded 

 by its authors as representing an ancestral form of Gyge. 



