Zool.— Vol. I] CALVERT— ODONATA. 375 



considering it a distinct species is undoubted ; I think the point of departure 

 of the nodal sector is very variable in grandis, some Venezuelan specimens 

 on this character only would almost fall into Lestes (restricted). 



"To sum up on the point that intimately concerns you. I am strongly of 

 opinion that unless my example be very teneral (and I don't think it is ten- 

 eral ) it cannot be of the same race as your Baja Californian examples, and I 

 don't think it would be advisable to unite the latter therewith unless with a 

 strong mark of doubt, pending possibility of obtaining more materials for the 

 true californica. It is unfortunate there is no special locality for this latter, 

 but I don't think H. Edwards collected beyond the limits of the State of 

 California (I mean southward). 



" I might put the color matter more concisely, taking my original descrip- 

 tion in conjunction with your nomenclature. The only blackish color is as 

 follows: The two cuneate spots on top of head ; the prothorax in part ; the 

 two broad antehumeral bands, one on each side, which are very sharply cir- 

 cumscribed and scarcely reach the edge of the thorax at either end; the 

 isolated mesepimeral spot. All the rest of the thorax and abdomen is pale 

 brown, and whether the individual be teneral or not, I think it is beyond the 

 bounds of possibility that any further development of bronzy or blackish color 

 could take place. Therefore the differences between it and your Baja Cali- 

 fornian examples are infinitely greater than between these latter and typical 

 grandis.' 1 '' 



It seems advisable to place on record here some notes on 

 the Baja Californian specimens made subsequent to the 

 publication of my report and based on considerably less 

 than the whole number of individuals therein cited. 



The antehumeral stripe is in the males nearly two-thirds, in the females 

 and one male one-half, as wide as the distance between the mid-dorsal and 

 humeral sutures and its color varies from dark metallic brown, almost black, 

 to dark metallic green. There is a mesepimeral stripe, of nearly equal width 

 with the antehumeral stripe and of similar hue, which is followed by a yellow- 

 ish area less bright than in more typical grandis. The abdomen is of a very 

 dark, almost black, color but has a metallic green reflection. Pterostigma 

 dark brown, surmounting two and one-half to three and one-half cells. 

 Median vein and costa externally not yellowish but blackish, like* the rest of 

 the reticulation; 11-15 postnodals on the front wings, 11-13 on the hind. 



Dimensions: Abdomen, 6 41-45 mm., ? 36-37 mm.; hind wing, $ 

 30-33 mm., ? 32 mm. 1 



1 Shortly before receiving the proof of this paper, Prof. C. V. Piper sent me a male 

 ArckiUstcs from Yakima, Washington, Sept., 1894. Its abdomen is 36.5 mm. long, its 

 hind wing 28 mm. Pterostigma 3.5 mm., pale reddish brown, surmounting one long 

 cell and parts of one or two other smaller ones. Antehumeral stripes at their middle 

 one-half as wide as the distance from mid-dorsal carina to humeral suture, reaching 

 from antealar sinus almost to anterior mesothoracic margin, blackish with a slight 

 metallic green reflection. A mesepimeral spot of similar color, subequal width and 

 about one-half as long as the antehumeral stripe; below this spot the color is yellowish, 

 but not bright. Pruinosity has appeared on the thorax and base of the abdomen. The 

 appendages agree with my fig. 10, PI. XV, 1. c. In other respects this male agrees with 

 the Baja Californians described above, although its size is nearly that of A. californica. 



