HIPPOBOSCIDAE. 



17 



genus Lynchia really belongs to the same group as does the type of Ornithoponus , 

 and that the former name consequently antedates Ornithoponus. For the genus 

 Lynchia of authors he has proposed the name Pseudolynchia. 



Another generic name involved is Icosta Speiser, the type of which is OJfersia 

 dioxyrhina Speiser. I am convinced that this genus is inseparable from that 

 which should now be called Lynchia, and that the name Icosta is to be added 

 to the synonymy of the latter. 



Although the species dealt with below has very probably already been named, 

 it is here described as new for the following reasons. The genus Lynchia, as 

 now understood, contains something over forty species. Material available 

 to me shows that the positive separation of many of the forms can only be 

 accomplished by means of a method of study, and of characters, not previously 

 employed in the work that has been done upon the group. Species cannot be 

 identified, except perhaps in a relatively small number of cases, from the pub- 

 lished descriptions and figures, nor even by means of actual comparison of 

 pinned and shrivelled specimens. It follows, then, that the least objectionable 

 course will be to describe as new those forms that cannot definitely be recognised. 



Lynchia samoana, n.sp. / 



Text-figs. 5 and 6. , 



Material examined. — Holotype female, one paratype female, and a broken 

 specimen of indeterminable sex, from Merula samoensis, Malololelei, Upolu, 

 Samoa, 20.vi.l924 ; allotype male and paratype female from Myiar/m vanicorensis, 

 same locality, 29. vi. 1924 (J. S. Armstrong). 



Female (text-fig. 5), length (on slide) 4-5-5 mm. A rather uniformly pale 

 brown species. 



Head with the clypeus deeply emarginate and produced on each side into 

 a short, horn-like process about the antenna, these processes black (text-fig. 6b). 

 Vertical triangle very large, extending almost to the centre of the head, and with 

 a very slight median incision anteriorly ; orbits with but three or four setae, 

 two of these moderately long ; antennae with a conspicuous cluster of black 

 setae at apex. 



Thorax almost destitute of setae, both dorsally and ventrally, having 

 only the few indicated in the figure. Humeral process only moderately large, 

 concealing the rather small spiracle ; scutellum rather narrowly rounded ; 

 VT. 1. 2 



