114 (DR. A. C. OUDEMANS) 



short, curved rostral hairs. The pseudostiginala are circular, do 

 not project, and bear short, scarcely club-like pseudostigmatic 

 organs. 



Tlie dorsal surface of the abdomen is wrinkled on the sides , 

 shows a thickened ridge at the boundary of the céphalothorax 

 and two transversal and two longitudinal ridges, as delineated in 

 fig. 11. Six hairs on the fore-margin, and four transversal rows 

 of four hairs each adorn the dorsal surface of the abdomen , 

 the four rows being bowed backward ; the hairs are long-spatulate 

 (fig. 14). The surface of the céphalothorax is scaled as it were 

 (fig. 12); that of the abdomen minutely wrinkled (fig. 13). 



The ventral surface (fig. 16) of the céphalothorax distinctly shows 

 divisions for the legs (epimera). The epimera of each side are 

 contiguous, leaving a free median space. The genital covers form 

 an oval, each bearing seven minute hairs near their free border, 

 and two longer hairs or bristles. The anal aperture is very oblong- 

 oval ; its covers do not show any hair , but on the sides of the 

 aperture we observe one little hair. The posterior margin of the 

 abdomen bears two spatulate hairs, curved towards the centre. 



The legs (fig. 11) are ({uiie Cainisia-Wke , and bear thick , almost 

 club-like hairs, all curved towards the distal end of the leg. These 

 hairs show very minute notches (fig. 15). Only the tarsus has 

 several small, and the tibia one long smooth hair. 



5. List of Acari collected by Mr. J. D. Alfken , of Bremen. 



Mr. J. D. Alfken, of Bremen, kindly sent me the following 

 Acari. 



1. Poedlocliirus fucormn de Geer, nympha coleoptrata speciei 

 quaedam , on Carahns moniUs , Bremen, 27, 8, 1809, lex., and 

 on Carahus cmiceUatus , Bremen, 11, 9, 1899, 11 ex. 



2. Ilolostaqjis marginatus Herm. , feminae tritonympha , on 

 Mtisca domestica, Bremen, 18, 9, 1899, 1 ex., 7, 10, 1899, 

 1 ex., and 12, 10, 1899, 4 ex. 



3. FoJjjaspifi pafavimifi G. and B, Can , nympha homeomorpha 



