18 Mr. F. P. 0:imbiiJ{i^o — A Revision 



uiul( r Ilia new fronus Pezionyx (Hist. Nat. Ar. p. HS). -1/. ic- 

 ier ica^ C. L. Koch, was renioveil under Bmchi/tlich by 

 Aussercr in 1871 (Verb. z.-b. Ges. Wien, p. 173), and in the 

 same publication he limits Trechona to ^[. zebra and 3f. lyco- 

 siformis, the latter beinu- included doubtfully — " Hicrher 

 gehort vielleicht hoch." M. zebroj however, was no longer 

 available under Trechona, and cannot possibly be the type, 

 since it had already been removed by Simon ; so that ^f. ly- 

 cosiforvns remains as the type, for it was originally included 

 in the genus, and, doubtfully or otherwise, was definitely 

 referred by Ausserer to Trechona in his limitation, an action 

 which is quite valid, since he founded a new genus at the 

 time out of the species originally included. 



Simon, in Hist. Nat. Ar. (2) i. p. 179, selected T. venosa 

 (Latreilk')=2'eZ*r«, Walck., as the type, sinking his own 

 genus Pezionyx. 



Type, Trechona lycosiformis (C. L. Koch). — Brazil. 



Pezionyx, E. Simon, Hist. Nat. Ar. p. 68 (1SG4). 



Four species were originally referred to this genus : — 

 (1) Myyale zebra, Walck., Brazil; (2) Diplura macrnra, 

 Koeh, St. Juan ; (3) Trechona drassiformis, Koch {puniiliOj 

 Walck.), St. Thomas ; (4) Mygah guyanensis, Walck., 

 Guiajia. 



Of these macrura had already been occupied as the type of 

 Jjiplura, 0. L. Koch (Uebersicht, v, p. 75, 1850). 



This genus has never, so far as I am aware, been broken 

 up, nor have any of the species been removed to any new 

 genera founded on them. The reference of one or more of 

 them to Trechona and other genera by authors does not in- 

 volve any valid process of elimination or limitation. 



The type, then, remains to be selected, and 1 here select 

 P. zebra (Walck.) =P. venosa (Latreille) as the type. 



Type, Pezionyx zebra (Walck ) = P. venosa (Latreille). — 

 Brazil. 



SlGALoii:SSA, Templeton, in Blackw. Sp. Gt. Bt. & Ir. pt. ii. 

 p. li)8 (18G4); MS. History of Irish Arachnida. 



Blackwall publishes Templetou's species Siyaloessa aurata 

 under Theridiu)i auratum. 



Type, Hiyaloessa aurata, Templeton, 18G4. — Ireland. 



SiNAMORUS, Templeton, in Blackwall, Sp. Gt. Bt. & Ir. 

 pt. ii. p. 198 (1864); MS. History of Irish Arachnida. 

 Blackwall publishes Templeton's s\)Qc'ies Sinamorus hcema- 

 tosiujinu under Theridivn hamatostiyma. 



