DIPTERA. 385 
Insect. Eur., VI, 25, and is entirely blind. Its thorax is divided 
into two transversal portions. The under part of the last joint 
of the tarsi is furnished with a transverse range of spines form-. 
ing acomb. Long before this, Reaumer had observed an ana- 
logous parasitical animal (if it be not the same), provided with 
a proboscis, on the Bee. He has figured it in his Memoirs, V, 
pl. xxxviii, fig. 1—4. 
The head of the others Pupipara—Phthtromyies, Lat.—is very 
small or almost wanting. It forms a minute, vertical body near the 
anterior and dorsal extremity of the thorax. 
They constitute the genus 
Myctreripia, Lat.—Puruirivium, Herm. 
These Insects have neither wings nor halteres, and resemble spi- 
ders still more than the preceding ones. They live on Bats. Lin- 
nus arranged one species, and the only one he knew, with the Pedi- 
culi *. 
* Lat., Ibid.; and the Encyc. Méthod., article Nyctéribie, and the same article 
of the Nouv. Dict. d’Hist. Nat., 2nd edition. See also the Memoir of Professor 
Nitzsch on Epizoic Insects. 
