380 GUNDLACH's work ox the ODOXATA of CUBA 



one left lateral. Mandibles, labium and first two antennal joints yellow. 

 There is a black spot at the latero-ventral angle of the pale postociilar spots; 

 elsewhere they are confluent with the yellow of the rear of the head. 



Fore and hind prothoracic lobes, thorax (except for the black stripes and 

 lines mentioned above, and a black line on the upper end of the obsolete first 

 lateral suture in the type but not in the paratype) sides of abdominal segments 

 one to eight (becoming blue on the posterior of these) and transverse basal 

 rings on three to six yellow; nine and sides of ten blue, dorsum of one to eight 

 and of ten black. 



Anal bridge (Tillyard) separating from the hind margin proximal to Cii-A 

 for a distance equal to (type) or shorter than (paratype) the length of the latter; 

 M2 arising near the fifth (front wings) or fourth (hind) postnodal; Mia arising 

 at eighth (front wings, seventh in left wing of paratype) or seventh (hind) 

 postnodal. 



Abdomen 30 (type) -26, hind wing 19 (type) -16, costal edge of stigma, 

 front wing, .63 (type) -.56 mm. 



Material examined: Type, Ic?, Enterprise, Florida, April 15, taken by 

 P. Laurent, in the collection of the Amer. Ent. Soc. (Acad. Nat. Sci. Phila.). 

 Paratype, Id", Cres[cen]t City, Florida, collection C. V. Riley (I'nited States 

 National Museum (head lacking)). 



The type has a pair of small pits on the middle prothoracic 

 lobe, similar to those possessed by the females of this group, but 

 smaller; each pit is just lateral to the dark longitudinal hne, 

 measures .08 x .04 mm., its greatest dimension obliquely trans- 

 verse to the main axis of the body, and is very shallow. Since 

 the paratype does not have these pits and since I have found a 

 single male each of signatum and of vesperum with j^its, I regard 

 their presence in males as indicating a partial gynandromorphism, 

 as in all other respects these three individuals appear to be com- 

 pletely male. 



This species is dedicated to the collector of the type, Mr. 

 PhiHp Laurent, of Philadelphia, to whom, during many years, 

 I have been indebted for specimens of Odonata. 



Mr. Rolla P. Currie, of the U. S. Bureau of Entomology, has 

 kindly placed the paratype at my disposal for study. 

 Enallagma vesperum new species (Plate XXXIII, figs. 3, 7-11, 20, 21; 

 plate XXXIV, figs. 29, 30.) 



The following literature refers to this species under the name of Enallagma 

 pollutum: 



1892. Harvey, Ent. News, iii, 91 (Chemo Stream, Bradley, Maine). 



1893. Calvert, Trans. Amer. Ent. Soc, xx, 239, pi. iii, fig. 27 ( cf apps.) (in part, 



Maine). 



1894. Wadsworth, Ent. News, v, 132 (Lake Cobbosseecontee, Maine). 



1895. Kellicott, Journ. Cincinnati Soc. Nat. Ilist.. xvii, 20(5 (Sandy Heach 



near Lakeside and Licking Reservoir, Ohio). 



