Mr. G. Hodge on the British Pycnogonoidea. 115 



rostrum, — Zetes being much elongated and seated upon a sort 

 of stalk, Achelia being short and stout. 



I have three species of this genus to describe, for which the 

 specific names of echinata, hispida, and Icevis are proposed. 



Achelia echinata (Hodge). PI. XII. figs. 7-10. 



Animal robust, with moderately long legs, furnished with strong 

 spines produced from little eminences upon the limbs and 

 body. The oculiferous tubercle is directed forwards, and ter- 

 minates in a little point directed backwards. Inner palpi of 

 the same length as the oculiferous tubercle ; the outer longer 

 than the rostrum. Colour fine sienna to a pale straw. 



This species has been found at the Channel Islands, the Isle 

 of Man, and upon the Durham coast. It is by no means un- 

 common from low tide to a few fathoms. Length i^ of an 

 inch. 



Achelia hispida (Hodge). PI. XIII. fig. 11. 



Animal robust, hairy. Limbs long, first four joints much stouter 

 than the others. Thorax much produced in front. Inner 

 palpi large and stout, with a circlet of little spines at the 

 base and at the top of the first joint ; outer palpi longer than 

 the rostrum. Oculiferous tubercle scarcely reaching beyond 

 the origin of the inner palpi. 



Several specimens from Polperro. Length -p§-o of an inch. 



Achelia lavis (Hodge). PI. XIII. fig. 12. 



Animal robust. Limbs smooth and regular in form, with a few 

 small hairs scattered over them, principally on the femoral 

 and tarsal joints. Inner palpi rather long, slender; outer 

 palpi as long as the rostrum. Oculiferous tubercle small, 

 produced considerably behind the inner palpi. 



Several specimens from Polperro, Length -j-g-g- of an inch. 



Phoxichilidium virescens (Hodge). PI. XIII. figs. 13-15. 



Rostrum stout, slightly thickened in the middle, truncate at the 

 apex. Footjaws slender, and closely approximated at their 

 origin, each finger with 6-8 teeth. Legs moderately long. 

 Colour pea-green. 



Several specimens from Polperro. Length ~o-o of an inch. 



This species might at first sight be mistaken for Phoxichi- 

 lidium olivaceum (Gosse) ; but the closely approximated footjawa 

 at once show its distinct character. 



8* 



