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belonging to the Arachnides. 205 



i 



the four terminal joints are prehensile, and have their in- 

 ner margins dentated, the teeth arranged in about four 

 longitudinal rows. Legs long and nearly equal, poste- 

 rior pair rather smaller ; joints of the coxae short and 

 subequaL Thighs about twice the length of the coxae^ 

 furnished with small spines at their superior extremity. 

 The first joint of the tibia equal in length to the thigh, 

 the other rather longer. Tarsi as long as the thigh ; the 

 last joint of the tibia, and those of the tarsi, each armed 



at their extremities beneath, with four rigid spines. Eyes 

 very small. Teguments pergamineous. ^ 



Habitat : sea in the vicinity of the New South-Shet- 

 land Islands. 



Cabinet of James Eights. 



I have placed this interesting animal in thp class 

 ARA CHNIBES, in consequence of its close approxi- 

 mation to Latreille's second family Pycnogonoidesy^ of 

 his order Tracheari^; it possesses all of the charac- 

 ters, besides which, it has a segment supporting two 

 additional legs, making in all Jive perfect pairs ; this 

 latter circumstance would doubtless bring it in the pre- 

 ceding class CRUSTACEA^ being a character which 

 strikingly distinguishes the animals that compose it; at 

 all events, I think it will certainly form a connecting 

 link in the great chain of the animal kingdom, between 

 these two classes, passing from the CRUSTACEA 

 into the ARACHNIDES by the genera Ntm- 

 PHON, Phoxichili, Ptcnogonum, &;c. Their mode 

 of resph-ation I could not determine, as no appearance 

 of the stigmata, tlu-ough which they are supposed to 

 breathe, were visible. Of the many specimens that I 

 obtained, I saw nnnf^ hut %\\ch as were furnished with 



I 



* Cuvier, Regne Animal. ||| 



VOL. I. PART II. 27 



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