no. 3644 TIPHIIDAE — KROMBEIN 3 



University during the summer of 1965. Poecilotiphia albomaculata 

 Cameron belongs to the Myzininae, but it is either a synonym of 

 Meria Illiger or a good genus closely allied to Meria. Myzine api- 

 macula Cameron is a species of Mesa and certainly cannot be the 

 opposite sex of albomaculata. Methocha rugosa Cameron from Ceylon 

 is colored similarly to the species I assign to Hylomesa, but it is 

 definitely a member of the Methochinae, not of the Myzininae as 

 suggested by Turner. The only previously described taxa referable 

 to what I describe here as Hylomesa are: Myzine tricolor Smith 

 (1858), Myzine dimidiaticomis Bingham (1896), Elis (Mesa) crasse- 

 punctata Turner (1914), Elis (Mesa) ugandensis Turner (1918), Elis 

 (Mesa) tricolor longiceps Turner (1918), and Elis (Mesa) tricolor 

 shuckardi Turner (1918). 



For the loan of material discussed in the following pages or for 

 other assistance, I am indebted to: Dr. Clare Baltazar, Philippine 

 Bureau of Plant Industry, Manila (PBPI) ; Dr. Delfa Guiglia, Museo 

 Civico di Storia Naturale, Genoa (MCSN) ; Dr. Fred Keiser, Natur- 

 historisches Museum, Basel (NMB) ; Dr. M. A. Lieftinck, Rijks- 

 museum van Natuurlijke Historie, Leiden (RNH) ; Dr. Laszlo Moczar, 

 Termeszettudomanyi Muzeum Allattara, Budapest (TMA); Dr. J. F. 

 Perkins, British Museum (Natural History), London (BMNH); Dr. 

 H. K. Townes, Ann Arbor, Mich. (HKT); Mr. C. R. Vardy, British 

 Museum (Natural History), London; Dr. G. C. Varley, Hope Museum, 

 Oxford University (HMOU) ; Dr. I. H. H. Yarrow, British Museum 

 (Natural History), London; Dr. C. M. Yoshimoto, Bernice P. Bishop 

 Museum, Honolulu, Hawaii (BPBM). 



Mrs. Elsie H. Froeschner made the habitus illustrations that 

 accompany this article, and Mr. Andre" Pizzini made the genitalia 

 figures. 



Hylomesa, new genus 



Type-species: Myzine tricolor Smith, 1858. 



Female. — Head porrect, more or less quadrate as viewed from 

 above; eye comparatively smaller than in Mesa, touching base of 

 mandible, inner margin shallowly and broadly emarginate; mandible 

 stout, slightly curved, with a stout subapical tooth on inner margin 

 that is smaller than the apical tooth, groove parallel to outer margin 

 bearing a series of long, stiff hairs and a short median groove bearing 

 shorter hairs, no groove parallel to inner margin; antennae arising 

 from beneath frontal lobes, pedicel concealed in recessed apex of 

 scape, thus antennae apparently 11-segmented; ocelli small, three 

 in number; clypeus broad and narrow, median keel weak to strongly 

 produced, the apical margin with a small rounded lobe on each side, 

 the median lobe broadly rounded and usually with a pair of small, 



