44 ACARIDEA. 
with me to Europe drawings and more or less fragmentary notes of many of the soft- 
bodied species, I had no opportunity of comparing the types themselves with European 
forms and the descriptions of authors. 
These remarks will perhaps incite future inquirers to fix their attention more 
particularly on these fragile forms. 
The list which follows contains the names of all the species of Acari hitherto 
described from Mexico and Central America. In it I have incorporated certain 
corrections and criticisms, which will be found under the names of the species to which 
they severally refer. 
List of the Species of Acaridea hitherto described from Mexico and Central America. 
Suborder I. ACARINA-TRACHEATA. 
Fam. TROMBIDIDA, ©. L. Koch. 
TROMBIDIUM, Latr. 
1. Trombidium mexicanum. 
Trombidium mexicanum, Stoll, antea, p. 1, Tab. I. figg. 1-1 d. 
Hab. Mexico, Presidio. 
This undoubtedly bears a remarkable affinity to 7. dubrweilli, A. Dugés; yet it 
cannot be considered to coincide with that species, as it seems to differ not only in size, 
but also in some minor details as regards the disposition of the hairs and the form of 
the palpi and mandibles. 
2. Trombidium dubrueilli. 
Trombidium dubrueillii, Alf. Dugés, La Naturaleza, vii. p. 806, t. 8. figg. 1-10. 
Hab. Mexico, Guanajuato, Tupataro. 
8. Trombidium hispidum. 
Trombidium hispidum, Stoll, antea, p. 2, Tab. IL. figg. 1-1 d. 
_ Hab. GuatEmata, Retalhuleu. 
4. Trombidium nasutum. 
Trombidium nasutum, Stoll, anted, p. 2, Tab. IIT. figg. 1-lg. 
Hab. GuateMALA, Retalhuleu. 
