Grammacephalus harpago Linnavuori
(Fig. 4D, E)
Grammacephalus harpago Linnavuori, 1978: 476 .
Material examined. No specimen examined.
Remarks. This species also resembles G. pugio in external features and in having a retrorse dorsal spine on the pygofer process, but is much smaller in size and can readily be differentiated by the subapical position of the spine on the male pygofer process.