Species of Planar ia, — Nymphum coccineum. 489 



kself. When young, there are two small eyes visible at the side 

 of the head, and the yellow line does not exist, but there is no 

 other material difference. 



3. Pl. LACTIFLOUEA.. 



3. PL linearis^ mutabilisy lactijiorea, antice maculis bints ruhris j 

 oculis pluribus. 



Hab^ The sea shore, under stones and amongst fuci, common. 



Desc. Bodi^ linear, about three inches long when extended, 

 but very contractile and polymorphous. It is of an uniform cream 

 colour, sometimes faintly tinged with red, marked with two red 

 spots near the head, and there are two others behind these but 

 Jess distinct. Anterior to the spots are the minute black points or 

 ,eyes arranged on the sides. 



Class. AuACHNiDiE. Lamarck. 

 Fam. Pycnogonidje. Id. 

 iGen. Nymphum. Fab. 



1. N. COCCINEUM. 



1. N. corpore glabro, coccitieo ; genkulis tarsisquejlavis. 



Hab. The sea, near Berwick. 



Desc. Bodtf and legs slender, of nearly equal thickness, of an 

 janiform fine transparent red colour, with the joints and tarsi yel- 

 lowish. Rostrum yellowish : mandibles like the body. Wlieii 

 jnagniSed, a central vessel, distinguished by its deeper tints, is seen 

 running uninterruptedly through the body and legs ; and the latter 

 are somewhat clothed with very soft white delicate hairs. Ros- 

 trum cylindrical, subclavate, not jointed, divided beneath by a 

 longitudinal line, terminal. Mandibles two, originating from the 

 first segment of the body, biarticulate : basal joint long, second 

 short and ovate, armed with two small equal claws. B idt/ qua- 

 driarticulate : ^w6erc/e oculiferous ; eyes two.? Legs eight, five 

 times the length of the body, equal. Co:c<^ four-articulate; the 



