410 A HISTORY OF RECENT CRUSTACEA 



Athelgue intermedia, Hesse, 1877, on Eupagurus cua- 

 nensis (Thompson). 



Athelgue Cardonce, Kossmann, on. Clibanarius misan 

 thropus, Risso. 



Athelgue lorifera, Hesse, 1877, on Eupagurus cuanensis- 

 (Thompson), together with several specimens of Pelto-- 

 g aster. 



Atlielgue cladophora, Hesse, 1861. 



Pleurocrypta^ Hesse, 1865. The male has the pleon as- 

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

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

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

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

 pendages. 



Pleurocrypta galatece, 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. 



Pleurocrypta porcellance, Hesse, 1877, on Porcellana 

 longicornis (Linn.). 



Pleurocrypta strigosa, Giard and Bonnier, 1890, on 

 Galathea strigosa, Fabricius. 



Pleurocrypta Hendersonii, Giard and Bonnier, 1890, on 

 Qalathea 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 it 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 parasitic on 

 Anomala and Thalassinida, the other characterised by the 

 appendages of the pleon being eutirely smooth, and in- 

 cluding the species parasitic on the JSukyphota (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. 



