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EUPAGURINiE, Ortmann. 



Parapagurus, S, I. Smith. 



Parapagurus, S. 1. Smith, Trans. Connect. Acad. V. 1879, p. 50, and Bull. Mus. Comp. 

 Zool. Harvard, X. 1882-83, p. 20 : Henderson, Challenger Anomura, 1888, p. 85 : Milne 

 Edwards and Bouvier, Mem. Mus. Comp. Zool., Harvard, XIV. No. 3, 1893, p. 26, and 

 Hirondelle Crust., Brachyures et Anomures, Monaco, 1894, p. 63 : T, R, R. Stebbing, 

 Hist. Crust. 1893, p. 166, and Marine Inv. S. Africa, Crust. 1900, p. 27 : Holmes, Synops. 

 Calif. Stalk-eyed Crust. 1900, p. 55 : Young, Stalk-eyed Crust. Br. Guiana, etc., 1900, 

 p. 385 ; Alcock, Cat. Indian Deep-Sea Crust. 1901, p. 216. 



Carapace strongly calcified in front of the cervical groove, less strongly 

 in the cardiac region, not much broadened posteriorly : rostrum broad and 

 obsolescent. 



Abdomen well-developed, soft, spirally-coiled or straight, but always non- 

 symmetrical : the last tergum and the telson well-calcified, the first two terga 

 very thin, the other terga hardly recognizable. 



Eyestalks of moderate length and slenderness, eyes well developed : 

 ophthalmic scales spiniform and widely separated. 



Antennular peduncle, and especially its terminal joint, long : the upper 

 flagellum of remarkable length, comparatively. Antennal acicle and flagel- 

 lum long. 



External maxillipeds widely separated at base : the exopodite of the 

 1st maxillipeds is non-flagellate. The endopodite (palp) of the 1st maxillae 

 has a rudimentary papillar flagellum. 



The chelipeds are dissimilar and unequal, the right being vastly the 

 larger : the fingers move in an obliquely-vertical plane, and the finger-tips 

 are calcareous or minutely corneous. 



The 2nd and 3rd pairs of legs are remarkably long, especially as to the 

 dactylus, which is sabre-shaped and twisted. The 4th pair of legs are sub- 

 cheliform and the 5ih pair cheliform ; in both there is the usual subterminal 

 pavement-like patch of granules, as there is also on both rami of the tail-fan. 



In the male the first two abdominal somites carry each a pair of unira- 

 mous appendages modified for sexual purposes, and the next three somites 

 have on the left side only each a biramous appendage, of which one ramus 

 is almost rudimentary. In the female, with the exception of the appenda<^es 

 that form the symmetrical tail-fan, there are no paired appendages, but each 

 of the somites, II — V, carries on the left side only a biramous appendage, the 

 last of which (somite 5) resembles the corresponding appendage of the male in 

 having one ramus rudimentary. 



In the female there is only one oviduct, and it opens on the coxa of the 

 3rd left thoracic leg. 



