PYCNOGONII'A 39 



three stout sub-equal joints, followed by a fourth nearly as long as the three together, 

 only a great deal more slender, and terminating in a very minute claw ; a conical 

 aMnmen lies at the extremity of the trunk, the posterior part of which is provided 

 with a small number of very long sets. 



LEIONYMPHON. 



Prof. Mobius (23) has described this genus as follows : 



" Korper knnhaarig. Rampf bn-it. Heintriger am Grundc rtiHaminciisUxwcnd. ITala knrz und 

 breit. Augeiihugcl koniach mit 4 Angen. ROnel walicnforinig. Finger olmu Zahnc. Palpen 

 iinin-li. .Iri;.'. Brutbeine cchngliedrig, 7. Glied beim Mannchen kun and dick ; allu Gliedcr nur kon 



I..!.,.:-.." 



LKIOimiFHOlf, HJ. 9 



Humpf ebenso breit wio lang. Dio bcintragcndcn Scitenforsatze dcr Rompfglicdcr stoascn 

 BOHunmen. Kopfsegment breit. Angentriiger konisch. 



Rteel walzenformip. Scheron konvr al der Riimel. Finger ohne Zahnc. Palpen ncnnglicdrig. 



Bratbeine ichnglicdrig ohne eigcntumlich geformte Donicn oder Zahne an den 4 Ictzcn Gliedern. 

 An den minnlicben Brntbeinen ist das 7. Glied sehr kurz, aber viel dicker ills die andcrn 3 Endgliedcr. 



This genus was established for the reception of a remarkably fine species, L. 

 *tri<t(um (Mobius), of which however only two examples were taken, and both of them 

 immature. A species in the- same collection described by Prof. Mobius as CotoMtadrit 

 i/HJxHiii appeared to me to be closely related, and an examination of the two Hpecies 

 which I have been permitted to make fully confirmed this suspicion. The ' Discovery ' 

 has brought from the Antarctic several species which arc unquestionably very closely 

 related. The ' Francais ' (2) has also found two species. Two more were described 

 some years ago by Dr. Pfefler (24), from South Georgia, and placed by him in the genus 



That the genus Leionymphon is very closely related to Ammothca is Ixsyond all 

 question. To this latter genus not less than thirty species have been ascribed, but 

 many of them present such peculiar characters that they cannot fairly IK- included. It 

 is not possible here to revise the genus, but I have considered it desirable to modify 

 Prof. Mobius' definition of the genus Leionymplum, and to give a list of those species 

 which I consider should be included therein. 



LraONYMPHON. 



Body more or low robot, with tnnsrem ridges developed to a grater or lew extent. The 

 lateral proocaea widely separated or otherwise ; span rather than apinea, or trace* of them, occur on 

 the lateral proceen and fin* coze. 



The Proboacu ii Urge, cylindrical or pyrifonu. 



The Palps are nine-jointed, the last fire joint* being short. 



* " An'ot gUU. Die 4 letiten Olieder der Brntbeine aind niehl mit eigeotUmlich gefonntoa Zahnea oder 

 DociMnl 



