Zool.— Vol. I.] CALVERT— ODONATA. 397 



border, while the adjacent clypeus and the labium are in many cases much 

 paler and even green or yellowish. In the teneral males abdominal segments 

 1-7 are pale green, mid-dorsal carina of 3-7, a lateral stripe on 1-3, and lat- 

 eral margins of 4-7 (wider in posterior half) brown. Abdomen beneath 

 dark brownish with indistinct paler spots at the bases of the segments. 



Female pattern of coloring of abdomen as here described for teneral males, 

 but 8-10 are similar to 6 and 7. 



22 $ 13 ? Tepic, Oct., 1894, Eisen and Vaslit. 

 73 3 9 " Nov., 1894, " 



296 16? 



After comparing a type male of basifusca with specimens 

 of abjecta Ramb. and fusca Ramb., identified by Baron de 

 Selys, in the Museum of Comparative Zoology, Cambridge, 

 I incline to my first opinion 1 that basifusca is synonymous 

 with abjecta. Mr. McLachlan wrote me, "On making a 

 casual comparison with a specimen from Brazil labeled 

 "■fusca Rbr.' by Selys, it is difficult to find any good char- 

 acter save that the basal spot in the latter is rather more 

 extended." I leave basifusca under these suspicions until 

 a review of the American species of Trithcmis shall be 

 made. 



33. Trithemis Montezuma, sp. nov. 



Female. Vertex, concave at tip, and frons dark plum color with a slight 

 metallic reflection. Sides of frons and clypeus pale greenish. Lips luteous. 

 Eyes in contact for a distance nearly equal to the length of the occiput, which 

 is black above, yellow behind. Rear of head yellow with some obscure 

 darker marks. 



Thorax and abdomen dark brown, pruinose, through which some yellow 

 appears near the bases of the legs. These brown, tibiae paler, tarsi blackish. 

 Abdominal appendages yellowish, longer than 10, not quite as long as 9. 

 Vulvar lamina one-sixth as long as 9, erect, margin rounded, entire. 



Wings somewhat milky. Reticulation, membranule and pterostigma dark 

 brown, the latter surmounting one cell and parts of two others, arculus a little 

 nearer the base than the second antenodal, nodal sector very slightly waved 

 beyond its middle, at least some double cells between the subnodal sector 

 and the supplementary sector next below. Front wings brownish at base to 

 about the level of the submedian cross-vein, but its limit nowhere sharply 

 marked, apex brown for a width of two cells, eleven antenodals, eight 



• 1. c, p. 537- 



