558 IVAR TRAGARDH 



teeth, one longer interior, and one exterior one, half as long. 

 The interior tooth more than one third the entire length of the 

 lobe, whereas in the typical spécimen it attains half the length 

 of the latter. The fine bifurcated, médian appendage, situated 

 below the base of the médian cusp, was broken off. 



Mandibl6s(fig. 66). Oudemans' drawing of thèse seems to 

 be somewhat cut-and-dried. He is, however, right in saying that 

 the chela is smaller than in C. nemorensis and C. cervus. 



Chela narrow, more than three times as long as it is wide 

 at the base, tapering towards the top. Lower jaw slightly shor- 

 ter than the upper one, with very short terminal tooth, at the 

 back of which there are two small, blunt teeth of equal size. 

 Upper jaw with large, perpendicular terminal tooth, projecting 

 beyond the top *of the lower jaw ; farther back, a narrow, 

 thin blade; pilus dentarius very small and placed, not at the 

 edge of the jaw, as is unsually the case, but laterally and sub- 

 terminally, thus in the same place as in C. Kochi Tgdh (com- 

 pare 1910, pp. 418 to 419, text-fig. 81). Tins characteristic 

 seems, accordingly, to be a generic feature. 



Hypostoma without any pecuharities ; itis, however, worth 

 pointing ont that themaxillary plates hâve almost the same 

 configuration as in C. Kochi, viz. a. latéral, oval lobe, directed 

 sideways, with a broad anterior fringe. 



Ventral side (fig. 67).This difïers, naturally, from that of the 

 tritonympha, but also from the other species, the adult (1) 

 females of which are known ; and the différences, being to 

 ail appearances of a generic, rather than a spécifie, nature, 

 seem to justify the assumption that the descriptions hitherto 

 existing are not reliable mth regard to thèse characteristics. 



As has so often been the case, it is the metasternal shields 

 and hairs that hâve been overlooked. 



(1) It ought to be pointed ont, however, that there seems to prevail some uneertainty as to 

 whether the females delineated by Berlese are really adults or only nymphae. But this does not 

 affect the question of metasternal shields and hairs being présent, or not. There is no doubt 

 whatever that, whether the shields are free or fused with otlier sliields, the position of the metas- 

 ternal hairs indicates which is the case. 



