192 (dr. a. c. oudbmans). list of dutch acabi. 



Wassenaar, July. — On Sciurus vulgaris, Utrecht, July (Oude- 

 mans, and Mr. J. de Kruijff). — On Felis domestica, Wassenaar, 

 July (Mr P. van der Kellen). — On Cervus elaphiis , Apeldoorn, 

 May, July (Mr. J. de Kruyff). 



2. Ixodes hexagonus Leach. {Ixodes autumnalis Leach) [Ixodes 

 erinacei Aud.) {Ixodes crenulatus Koch). — Free, (Dr. A. W. M. 

 van Hasselt). — On Putorlus putorlus , The Hague. — On Erina- 

 ceus eurojiaeus , Utrecht, June. — On Lacerta agilis, Zeist, 

 (Dr. R. Horst). 



Rhipistomides Koch. 



D e r ni a c e n t r Koch. 



3. Dermacentor sp. — On Numenius arquata, Utrecht, July, 

 (Mr J. de Kruyff). 



4. Dermacentor sp. — On Otus otus , Utrecht , June , (Mr. J. 



Kruyff). 



Remarks. 



1. By the courtesy of Dr. A. W. M. van Hasselt I received 

 an Amhlyomma, the locality was not noted down. 



Dr. Henri W. de Graaf presented to me an Amhlyomma^ found 

 on a kind of Testudo, in Gochinchina. 



I myself picked up two specimens of an Amhlyomma from a 

 Testudo tabulata, arrived at the Zoological Gardens of the Hague 

 from Paramaribo. 



Mr. Anton Greshoff, of Brazzaville, Congo, handed me some 

 specimens of that locality , which are of the most brillancy , irisating 

 like mother-of-pearl. The figures on the back show a close affinity 

 to the species called Amhlyomma vetmstum Koch . of Senegal and 

 Amhlyomma ammlipes Koch of South-Africa, so that within the 

 genus Amblyomma Koch there exist smaller groups. 



On a Trìglyphodoìi dendrophilum , a snake from Java, in the 

 collection of the High City School of Sneek , I found a few specim- 

 ns of Riciniae. The Director of that institution , Dr. Andreae , 

 kindly permitted me to examine them. My investigation lead to 

 the result that the specimens were Amblyomma helvolmn Koch 



