(on. A. C. OUDEMANS) LIST OF DUTCH ASABl. 123 



1st. Ven. Sc. Lett. Ari. (5) IV, p. 63, 1877; R. Canestrini, in 

 Bull. Soco Ven. Trent. Sc. Nat II, I, p. 162, 1881; TromUdidae 

 Kramer in Arch. Nat. p. 226, 247, 1877; in Zeit. ges. Nat. 51, 

 p. 532, 1878; in Vega Exped, Vetensk. Arbeter, III, p. 521, 

 1881; Haller, Milb. als Paras, d. Wirbellosen, p. 47, 1880; 

 MÉGNIN, Les Paras, et les malad, paras, p. 239, 253, 1880; 

 Tromhidüdae Murray, Econ. Entom. , Apt., p. 93, 117, 1877; 

 and TromUdijiae Claus, Grundz. Zool. 1, p. 653, 1880. 



3. Tromhidiiim opUionis Müll. — It is curious that I nowhere 

 met with the remai'k that Pagenstecher's TromUdium holosericeim 

 (Beiträge zur Anatomie der Milben , I) is nothing else but the 

 TromMdmm fulujmosum Herm. Pagenstecher himself wonders 

 (loc. cit. p. 3. foot-note) at Dugès's saying : le dos chargés de 

 papilles velues à leur bases et globuleuses à leui' extrémité )> 

 and he adds «(î?))), whilst he himself observes that the hairs 

 are very fine, tapering to their ends and feathered in quincunx 

 (loc. cit. p. 5 , tab. I , fig. IX). No wonder ! 



4. Anystis. — Von Heyden in 1826 (Isis) created the genus 

 Avystis for TromUdium cofuigenmi Herm as type. Koch in 1836 

 (Deu. Cr. Myr. Ar. 1. 6.) gave the name ^c^îw^^r/dj to a genus with 

 Actineda Jiilarls Koch as type. — Both these two animals do belong, 

 even at present, to the same genus; consequently this genus must 

 be called Anystis von Heyd. Most probably Ocypete rubra Leach is the 

 young of one of the species of the genus Anystis Heyd. If this be 

 settled, the genus should be called Ocypete Leach, 1814. Sun- 

 devall, 1833, writes Ocypeta, and Murray, 1877, Ocypetus. 



5. Anystis haccarnw, Linn. • — Acarits baccarum of Linné (Syst, 

 Nat. Ed. 10. n". 20. 1758J, Acarus arboreus ruber disienius : la- 

 teribus obscuriorïlms Linn. (Faun. Suec. Ed. 1. n". 1201) is decid- 

 edly the same animal as Hermann's Tromhidltim cornigerum ^ and 

 Koch's Actineda ri/jis. 



6. Belmistium. — Von Heyden, 1826, (Isis), created a genus 

 Belaustimn for TromMdimn murorum Herm. as type. — In 1834 

 ÜUGÈS (Ann. Sc. Nat. (2) I) gave the name RkyncJiolopIms to a 

 genus with Acarus ph al any old e s de Geer (noi phalangioides , as is 



