A. C. OnUEMANS, NOTES ON ACARI. 39 



bristles, one directed outward and forward, the second inward 

 and forward Femur: proxiiually and outward a bristle; distally 

 and inward a knife-shaped hair, with sharp edge forward and 

 blunt edge backward and provided with two sharp teeth or 

 bristle-like outgrows. Genu with the usual two knife-like 

 hairs; tibia and tarsus normal. The palps are tapering 

 slightly. 



Legs (fig. 30) slender, resp. 1550, 990, 1050 and 1550 

 fx long. On femur and genu II, femur and genu III, and on 

 all the joints of leg IV there are one or more rod-like and 

 distally hairy hairs (as represented in fig. 32). T a r s u s IV (fig. 

 37) distally like in the male with two dorsal and two ventral 

 short but strong spines and with two rather short supra- 

 praelarsal (sense?) hairs. Praetarsus IV (fig. 37) short, 

 distally with two heart-shaped supra-unguinal sticking pieces 

 and a subunguinal caruncle not unlike an inverse flying bat. 



2. Parasitus coleoptratorum concretripilus Oudms. 



(With Plate 3, fig. 38). 



Parasitus coleoptratorum conci etipilus Oudms. in Entom. 

 Bericht, p. 154. 1 Mei 1904. 



Deutonympha. Hitherto I only found a deutonympha. A 

 description of it in all minute particularities I consider super- 

 fluous. The only difference between this variety and the real 

 species is the situation of the vertical hairs. These are implanted 

 so near the median line, that their areolae of implantation 

 touch each other. 



Most probably we do not have here to deal with a mere 

 accident, possibly caused by a damaging of the vertex 

 whilst the creature was still protonympha, or even larva, or 

 even egg; but a spriugvariation or mutation, as we already 

 met with and described of Glycypliagus domesticus concretipilus 

 Oudms., and which in favorable instances could induce the 

 origin of a new species. 



