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XI An annotated List of the Ephemeridse of New Zen- 

 land. By the Rev. A. E. Eaton, M.A., F.Z.S. 



[Read June 7th, 1899.] 



Plate X. 



Pseudo-Neuroptera. 



Family EPHEMEBID^. 



ICHTHYBOTUS, gen. nov. 



A GENUS of the Sectional Type of Ephemera, resem- 

 blincr Pcntagenia in style of wing-neuration, and m having 

 the ''median caudal seta abortive in the $ miago but 

 either not much shorter than or subequal in length to 

 the outer setse in ? . Legs as in Ephemera, excepting the 

 claws of the fore tarsus of the $ , the outer claw bemg 

 hooked and the inner obtuse, instead of both alike being 

 obtuse. Distinguished from the other genera of this 

 Sectional Type by the $ genital forceps, resembling in 

 pattern those of a Siphlurus (cf S. kcws/^ns),— the forceps 

 —basis subquadrate with the posterior angles obhquely 

 truncate for the insertion of the limbs, the first joint in 

 which is shorter than the basis. The name in C^reek 

 means fed on by fish. 



ICHTHYBOTUS HuDSONl. (Plate X, figs. la— Id, details.) 

 Ephemera Hudsoni, McLach., Ent. Mag. (2), v, p. 270 

 (Dec. 1894). 

 Complete specimens lately received by Mr. McLachlan 

 enable the description to be continued in respect ot the ^ 

 and ? imago, and have decided what was doubttui con- 

 cerning the genus. Genital forceps dull waxy yellowish, 

 slightly dingy at the tips. Penis bifid, with thm or 

 flattened lobes of even width, concave beneath, truncate 

 at the tips, and divergent. 



? Imago.— Wings transparent, tinted uniformly throughout the 

 disk with light yellowish green, with black neuration, except near 

 the wing-roots, where the stronger nervures become olive-brown and 

 TRANS. ENT. SOC. LOND. 1899.— PART III. (SEPT.) 



