WARBURTON— THE ACARINA OF THE SEYCHELLES 355 



20. Notaspis simplex, n. sp. 



Differs only from N. flagellata in its somewhat smaller size and in the clavate pseudo- 

 stigmatic organs which are destitute of the whip-liiie pi'olongation. 

 Moss, Palm Valley, Praslin. 



21. Notaspis acutipes, n. sp. (PL 17, fig- 10). 

 Length about "35 mm. 



Cephalothorax almost an equilateral triangle. Lamellse short converging ridges with 

 slight cusps ; a well-marked translamella. Pseudostigmatic organs rather long and clavate, 

 with long-oval termination. Abdomen oval, somewhat pointed behind, finely punctate all 

 over, giving a roughened appearance. Legs long and slender ; tarsi particularly long and 

 sharp ; monodactyle. 



Moss, Mahe. 



22. Notaspis frontata, n. sp. (PL 17, fig. H). 

 Length about "16 mm. 



Cephalothorax rather broad ; pseudostigmata large, pseudostigmatic organs long, 

 clavate, with large oval head. The cephalothorax is divided into two regions by a 

 transverse line between the pseudostigmata with a median anterior loop and two 

 backwardly projecting processes. The portion in front of this is coarsely reticulate or 

 pitted. Two additional short lateral longitudinal ridges on the posterior portion. 

 Abdomen oval, rather broad behind, with four carinas in the anterior region and four 

 clavate hairs behind. Legs moniliform, monodactyle. 



A single specimen of this minute species was found in moss from Palm Valley, 

 Praslin, and was fortunately examined with some care, and i-oughly drawn, before 

 mounting it in balsam. It is quite possibly common, but its small size may readily cause 

 it to be overlooked. 



Damaeinee. 



23. Amerus seychellensis, n. sp. (PL 18, fig. 15). 

 Length about '53 mm. 



Body dark, veiy elongate, the cephalothorax almost equal in length to the abdomen. 

 Lamellae linear, very long and sub-parallel, giving off slight internal processes a little in 

 front of the pseudostigmata. Pseudostigmatic organs long, flagelliform, monodactyle. 



In general appearance it resembles A. speciosus, Pearce (Jour. Roy. Micr. Soc, 1906, 

 p. 272), but the cephalothorax is longer and the lateral projections (tectopedia) less 

 pronounced, while the pseudostigmatic organs are quite different. The abdomen is 

 similarly furnished with rather long hairs, but is more pointed posteriorly. 



A single specimen from moss, Cascade Estate, Mah^. 



24. DamcBus retiarius, n. sp. (PL 18, fig. 21). 

 Length about '36 mm. 



In size and general configuration much like D. verticillipes, Nicolet. Cephalothorax 



