NO. 1417. RE VISION OF AMERICAN SIPHONAPTERA—BA KER. 125 



from the original description. The statement that the insect does not 

 jump is true only, of course, when it fastens itself to the host. The 

 same habit is characteristic of Argojtsylla (/((Jlhidcea. Indeed Ollift's 

 species is very close to Argoj^ojlla, if not actually a memlxn- of that 

 genus. Carefully made detail drawings of its head, mouth parts, and 

 legs are especiall}" needed. 



Genus RHYNCHOPRION Oken. 



1815. Rhynclioprlon Oken, Naturgesch. f. alle Stiinde, III, p. 402. 

 1840. Surcopsylla Westwood, Trans. Ent. Soc. Lund., II, p. 202. 

 1893. Sarcoimilla Bezzi, Rev. Ital. Sci. Nat. y Boll: Nat., XIII, p. 23. 

 1904. /SVnroy>.s7/Wa TiRABOscni, Arehiv. de Parasit., VIII, p. 302. 



Oken used this name for this genus lirst, and indicated a well-known 

 species as its type, thus detinitely establishing it. 



SYNOPSIS OF SPECIES. 



A. Last article of anterior and middle tarsi almost spineless; the head angled at about 

 a third of the distance from mouth to l)ase of vertex jx'iii'traiiK 



AA, Last article of anterior and middle tarsi normally spined; the head angled at 

 about one-seventh of the distance from mouth to base of vertex nvcata 



Genus ARGOPSYLLA Enderlein. 



1901. J?'(/o;;s^*///a Enderlein, Deutsches Tief-see Exped., 1898-99, III, p. 263. 

 1904. Xestop.v/Ua Baker, Proc. U. S. Nat. Mus., XXVII, p. 374. 



Between the dates of the conclusion of the Revision and its publica- 

 tion there appeared a new generic name — Ar<j<)pnyJ}a — antedating by 

 publication the name Xti^foju^i/lla. It was published in the advance 

 sheets of a general article in a rather remote Avork. Hxcept for the 

 kindness of the author, it would have remained unknown to the writer 



even now. 



SYNOPSIS OF SPECIES. 



A. Mandibles a third longer than the length of head from base of mandibles to 

 base of vertex; abdomen in the pregnant female long, subcylindrical, with a 

 broad membranous separation at the pleurpe, the stomata thus high up toward 

 the dorsal line rhynchopsylla 



AA. Mandibles about as long as length of head; abdomen of normal form, and with 

 the tergites and sternites overlapping even in the pregnant female . . .gaU'macea 



Family MALACOPSYLLID.E. 



1898. MegapsyUid:r Baker, Journ. N. Y. Ent. Soc, VI, ]>. 53. 

 1903. Megaj)synid,r W AiiLGRKy;, Arehiv fi'ir Zool., I, p. 191. 



With the recognition of the proper name for the unique genus, the 

 name of the family changes also. 



Genus MALACOPSYLLA Weyenbergh. 



1881. Malacopsylla Weyenbergh, Periodico Zoologico, III, p. 271. 

 1898. Megapsylla Baker, Journ. N. Y. Ent. Soc, VI, p. 53. 



1903. Megapsylla Wahlgren, Arehiv fiir Zool., I, p. 191. 



1904. Malacopsylla Rothschild, Novitat. Zool., XI, p. 603, 



