REVISION OF THE SARCOPSYLLIDAE 
65 
Modified Segments.' — The eighth tergite (PI. I, Fig. 10) bears on the outer 
side a row ot about seven bristles. On the inner side, however, there is a row of 
about a dozen bristles, of which six or seven are long. In front of this row there is 
another more irregular row of short bristles. The number of bristles on this segment 
is much smaller than in H. psittaci. 
Length : $ (extended), 2-7 mm. 
Haller's specimens were taken off a bat {Molossus = Nyctinomus) from Brazil. 
We have ten of this insect from Parana, Brazil, off Histriotus velatus, and another 
$ from Buenos Aires, off Nyctinomus hrast/ieusis, this last collected by the late Dr. 
Carlos Berg. 
In addition to these we have examined two of Dr. Haller's specimens. 
3. Genus. DERMATOPHILUS 
Pulex Linne, Syst. Nat. ed. X. p. 614 (1758) (partim ; type : irritans). 
Dermatophilus Guerin, Icon. Regne Anim., Ins. p. 12 (1838 or 1839) (type : penetrans) ; Laboulb., 
Bull. Soc. Ent. France p. 155 (1874) [Rhynchoprion Herm. = Argas, a tick ; Dermatophilus 
has priority over Sarcopsylla) ; id., I.e. p. 1 14 (1875) (contra Westwood). 
Dermatophylus, Lucas, in Guerin, Diet. Pitt. Hist. Nat. VIII. p. 394 (1839). 
Sarcophaga Westwood (Guild mss. ; non Meigen, 1826), Trans. Ent. Soc. Loud. 1 1 . p. 200, 202 
(1840). 
Sarcopsylla id., I.e. p. 202 (1840) (type : penetrans) ; Taschenb., Die Flohe p. 44 (1880) (partim) ; 
Baker, Proc, U, S. Nat. Mus. XXVII p. 374 (1904). 
Rhynchoprion, Karsten (non Hermann, 1804), Bull. Soc. Imper. Moscou. p. 72 (1864); Guyon, 
Rev. Mag. Zool. p. 64 (1866) ; Baker, I.e. XXIX. p. 125 (1903). 
Several authors have applied the term Rhynchoprion Ok en to this genus. In 
this they were wrong. Hermann proposed that name for a tick in 1804.* Oken, 
in his Lehrb. Naturg. iii. p. 402 (18 15), employed the same name for his second and 
third genera of ticks. The Pulex penetrans (Oken does not write Rhynchoprion 
penetrans) was merely put in between the second and third genus, because Oken 
believed it to belong somewhere among the ticks. 
As regards the names Sarcopsylla and Dermatophilus we think there can be no 
doubt that Sarcopsylla was published later than Dermatophilus. Westwood, in 1865 
(Proc. Ent. Soc. Loud. (3). ii. p. 91), claims priority for his name, while in 1874 and 
1875 Laboulbene (Bull. Soc. Ent. France p. 155, resp. 1 14) maintains that Dermato- 
philus was published before Sarcopsylla. 
The facts, as far as we have been able to ascertain them, are these : — 
Sarcopsylla was published in 1 840. The name Dermatophilus appears first in the 
text of Guerin's Icon. Regne Animal. The exact date of publication of this text is not 
known to us. Westwood quoted the name Dermatophilus from this text at the end 
ot his paper ; but he says in Intr. Class. Ins. p. 493 (1 840), that he had received 
* Mem. Aptcres. 1804. 
J 
