122 A. C. OUDEMANS. ACARI. 



to the tarsus I, and one long dorsal tactile hair on tarsus IV. Paratarsi (Fig. 10, n) tvvo- 

 jointed, with two strong claws and five-lobed fan-shaped caruncle or sticking-piece. I did not 

 observe supra- or infra-unguinal hairs, nor a médian bladder. 



Habitat. On the head of Goura sp. together with Thrombidium wichmanni Oudms. 

 and Tyroglyphus dimidiatus (Herm.) 



Celaenopsis weberi Oudms. 

 (Plate II, fig. 12—23). 



1905 March 1. Celaenopsis weberi nov. sp. OUDEMANS in Entomologische Berichte, 

 n°. 22, p. 216. 



Patria: New Guinea (Manokwari, 14 — 28 February 1903; 1 ex.). 

 Found by Messrs. de Beaufort and Lorentz. 



Maie (Fig. 12 — 23). Length 960 y.. Colour brown, like Uropoda, Cilliba, etc. Shape 

 broad oval, well shouldered, considerably constricted before the shoulders; posteriorly rounded, 

 scarcely pointed in the médian line ; remarkably flat (Fig. 14); legs I slender; other legs 

 thick. Texture smooth, polished, only wrinkled in the weak skin surrounding the base of the 

 rostrum and of legs I. 



Dorsal side (Fig. 12) wholly protected by one dorsal shield. Hairs. Four vertical bristles 

 of which the inner pair longer and widely apart. A little more backward a pair of short 

 bristles. On each shoulder a marginal bristle. Before the shoulders three marginal bristles, 

 Behind the shoulders nine marginal bristles and 6 submarginal bristles. A little before the 

 centre of the dorsum two stronger bristles widely apart. Far more backward a pair of short 

 bristles. Moreover 3 pairs of distinct pores in the anterior half and 3 pairs of ditto in the 

 posterior part of the dorsum. The bristles are curve and serrate on the convexity (Fig. 15). 



Ventral side (Fig. 13). Ail the shields hâve fused, even with the dorsal shield. The 

 whole mai-gin is transparent (see dotted line and fig. 15). From the médian posterior point 

 behind the anus to the shoulders we observe again a narrow transparent band (represented 

 in my figure by two dotted lines), which deceitfully imitâtes a séparation between a sterno- 

 metasterno-genito-ventro-peritrematic shield and two inguinal shields ; this, however, is not the 

 case , for examined with strong enlargements the whole ventral surface is provided with 

 extremely small and narrow scales (fig. 15) even those transparents bands, not, however, the 

 transparent margins (fig. 15). Anterior corners of sternal portion, and angles between coxal 

 II, III and IV rounded. The portion surrounding the camerostome and coxae I is not shielded, 

 weak and finely wrinkled. Génital aperture before the sternal portion small, aparently shut 

 by a little valve (fig. 22). Tritosternum (mentum, Bauchtaster) small, semicircular, with serrate 

 edge and a long distally bifid haired slip (Fig. 22). Anus small. Behind the anus two pores; 

 no cribruvi. On the usual places the minute stigmata and a narrow peritrenia, running for- 

 ward scarcely beyond coxae II. Hairs. Ail the hairs are minute bristles except one pair of 

 short ones on the oblique posterior margins. Three pairs of sternal bristles; one pair of meta- 

 sternal ones; one pair of génital ones far forward; 4 pairs of ventral ones and a group of 

 5 — 6 metapodial ones; aside of the anus 2 pairs of anal ones; no postanal hair. 



