124 NEUROPTERA. 
gg. Middle prothoracic lobe without teeth; abd. seg. 8 blue, with a 
black stripe each side, 9 black; some orange on dorsum of 1} 
and2 2 6 ew ew ew ee ee ee ee eee ee [AL corvula.] 
(The females of J. damula are unknown.) 
1. Ischnura ramburi. 
Agrion ramburii, Selys, Rev. Odon. Eur. p. 186 (1850) *; in Sagra’s Hist. Cuba, Ins. p. 468 (1857) ’. 
Ischnura ramburii, Selys, Bull. Acad. Belg. (2) xli. p. 272 (1876)°; Kolbe, Arch. f. Naturg. liv..1, 
t. 13. fig. 3 (basal half of front wing) (1888) ‘; Calvert, Trans. Am. Ent. Soc. xx. p. 240 (1893)? ; 
Martin, Boll. Mus. Zool. Torino, xi. no. 239, p. 3 (1896) °; Prinzessin Therese, Berl. ent. 
Zeitschr. xlv. p. 263 (1900) ’. 
Agrion senegalense, var., Rambur, Névr. p. 277 (1842) °. 
Agrion tuberculatum, Selys, i in Sagra’s Hist. Cuba, Ins. p. 467 (1857)°; Hagen, Syn. Neur. N. Am. 
p. 76 (1861)”. 
Agrion iners, Hagen, loc. cit. p. 75 (1861)"; Provancher, Nat. Can. vill. p. 324 (1876) ”; Pettit, 
Can. Ent. vi. p. 45 (1874) ™*. 
The following are some measurements from individuals from different localities made in investigation of 
de Selys’s suggestion *, ‘ Peut-étre existe-t-il plusieurs races ” :— 
Philadeipis Pa, | Gotha, Florida. City of Mexico. 
mm. mm. mm. 
Abdomen <6 ........ 23-25 22°5-25°5 24:5 
black @ ........ 25 23-24 24°5-26°5 
orange? ........ 25 23°5-26 24-26 
olive @2 ........ 25-27 27 24-5 
Hind wing ¢ ........ 14-15 14-17 17 
black 9 ........ 17 15-16 18-19 
orange? ........ 18 16-18°5 18-20 
olive 2 ........ 18 19 19 
Other localities are represented by so few specimens as to make them useless for comparison. In spite 
of their longer wings, the individuals from the City of Mexico have not more postcubitals than those from 
Gotha. 
Hab. Norta America, Quebec 2, Ontario }%, Watch Hill, Rhode Island (P. P. C.) to 
Florida 5, Louisiana ® 11, Texas 5.—MeExico 3 (Deppe 1), Mazatlan (A. M. NV. H.: lor. 2), 
Tampico !!, Mexico city (Barrett, colls. Adams, McLachlan, P. P.C.: 46,7 bl. 2, 
7 or. 2,1 ol. 2), Campeche 1°, Teapa (H. H. Smith: 1 or. 2), Acapulco (Hassler 
Exped., M.C. Z.: 1 3), Tehuantepec (Deam: 1 ol. 2 ).—Cotomaia, Barranquilla ’ 
“ VENEZUELA, Magdalena ” 3 (is not ‘‘ Venezuela” an error for “‘ Colombia” ?); GutaNa, 
Cayenne !°; Peru, Lima (M. C. Z.: 1 or. 2); Cxitn, Arica? (formerly in Peru); 
PARAGUAY (Borelli 6); West Inpies, Cuba 10 11, 
I. ramburt is very similar to I. senegalensis (Rambur), found throughout the tropical 
regions of the Old World. It apparently differs by its usually (but not invariably) 
larger size; the male inferior appendages a little shorter (about three-fourths as long 
as the tenth abdominal segment, while in J. senegalensis they are equal to that 
