1895. PBOCEEDINGS OF THE NATIONAL MUSEUM. 137 



second and third coxre; tlie huineral stripe is narrow and not well 

 defined. 



The coloring- of abdominal segments 2-7 is more like that of the 

 female of the Stockholm collection than of the male. 



Stripes on the feet brown, rather ill defined. 



Antecnbitals 11-12 on front wings, 8-9 on hind wings, 0-8 i^ostcu- 

 bitals on all wings. First and fifth antecnbitals thicker on all wings. 

 No subcostal cross vein (of Karsch). Three cells after the triangles, 

 then two rows. 



Afeasurements. — Total length, 43 mm. Abdomen, 33. Front wing, 

 26-27. Hind wing, 25-20. Ptero'stigma, 3.5. Superior appendages, 3. 



One male has lost the last four abdominal segments. 



In spite of the diflereuces described above, I believe these specimens 

 to belong to 0. eognatus (Eambur) Selys, because the ai)pendages, the 

 size of the body, and the pterostigma agree with the description 

 thereof. The most serious differences are the absence of the occipital 

 spines and the presence of the frontal denticles. 



ANAX RUTHERFORDI, McLachlan. 



Anaxrutherfordi, McLachlan, Ent. Mo. Mag., XX, p. 128, 188.S. — Kirhy, Cat. Odon., 

 p. 85, 1890. 



Female. — -Frons, nasus, and rhinarium pale greenish yellow; no spot 

 on the frons. Labrura and labium a little more obscure. Free margin 

 of the labrum slightly edged with blackish. Mandibles exteriorly pale 

 yellow, their tips black. Vertex blackish, its tip light brown, forming 

 a crescent, concave anteriorly, when viewed from above. Occiput and 

 rear of the head brownish yellow; hind margin of the occiput concave. 



Colors of the thorax changed; perhaps greenish on the side, darker 

 on dorsum. 



Abdomen stout, base inflated, thence tapering gradually to 7, apex a 

 little wider. A sniiplementary lateral carina on 6-10, but faintly 

 marked on and 10. Between the two lateral eariiiM' of each side of ()-9 

 are some blackish marks. A cluster of fine black denticles on the 

 median apical dorsum of 2; ventral apex of 10 with numerous slightly 

 larger black denticles. General color of the abdomen reddish brown 

 in the dried specimen ; a basal black spot on 1 ; an apical black spot 

 on 2-8, interrupted and divided into two spots by the dorsal carina on 

 5-7; a median dorsal black spot on 9; 10 paler than the preceding- 

 segments, apparently unspotted. 



Appendages leaflike, reddish brown, a little longer than the last two 

 segments, apices moderately acute. 



Femora reddish, tibise and tarsi black. 



Wings hyaline, smoky along the posterior margin. Eeticulation 

 reddish brown about as far as the nodus, then becoming dark brown or 

 black; the costa remains a light brown, however, for nearly its entire 

 length. A yellow cloud at the base of all the wings between the costa 



