BORNEAN DRAGONFLIES. 55 
Tt has the basal subcostal nerve of the second series present on all 
four wings; the hamuli are large and the “ Penischale ” is small. 
The upper pair of anal appendages are very similar to those 
figured by Ris for LZ. perforatus Ris and L. sauteri Ris. 
It is characterized by the possession of a single row of cells 
only in the whole anal area, and by the rather striking yellow 
spot on the dorsum of segment 10 of the abdomen. (For figures 
of genital appendage of this species see Laidlaw, loc. cit.) 
The type: d is in the British Museum. 
[LEPTOGOMPHUS KELANTANENSIS (Laidlaw).#?f 
Leptogomphus kelantanensis Williamson, loc. cit. p. 291 (1907). 
Gomphus consobrinus Laidlaw (nom. preoccup.), Proc. Zool. Soc. 
Lond. 1902, i. p. 80, pl. v.-fig. 5. 
Gomphus kelantanensis Laidlaw, Proc. Zool. Soc. Lond. 1902, 
li. p. 382 (footnote). 
This species belongs to section A of the genus, according to 
Dr. Ris’ arrangement. There is no basal postcostal of the second 
series, the hamuli are small, and the “ Penischale” large. The 
single male captured is fully adult and its sober colouring is 
excellently shown in Mr. Wilson’s figure, where the venational 
characters are also satisfactorily exhibited (Proc. Zool. Soc. Lond. 
1902, pl. v. fig. 5). 
Like Z. williamsoni, this species has its anal area composed of a 
single row of cells. The upper anal appendages are rather small, 
with a single well-marked but small tooth on their outer side at 
about the middle of their length; the apppendage terminates in 
a fine upturned point; each extremity of the lower appendage is 
hooked upwards rather abruptly at its termination. 
The type ¢ is in the Zoological Museum of the University of 
- Cambridge. | 
BURMAGOMPHUS VERMICULATUS (Martin), subsp. INSULARIS, nov. 
Ceti) 2) 
Gomphus vermiculatus Martin, Mission Pavie, p. 11 (sep.). 
Burmagomphus vermiculatus Williamson (nee Martin 2), loc. 
eit. pp. 298-301, figs. 27, 28, 29 (10); (Ris, Tijdschrift v. Entom., 
Deel lv. 1912, p. 164). 
Sie 
An interesting addition to the fauna of Borneo. In size it 
agrees closely with Williamson’s specimens from Burmah, in 
most other respects it appears to approach the individuals de- 
scribed by Martin from Tonkin. I am disposed to believe that 
Willamson’s examples represent a species distinct from the true 
B. vermiculatus of Martin; but cannot be certain on the point 
without a good supply of material from the two localities. 
In any case the present specimen agrees rather with Martin’s 
specimen than with those described by Williamson. 
_ * Not recorded fram Borneo. 
+ {The parentheses around the names of authors placed after scientific names in 
this paper are used in accordance with Article 23 of the International Rules of 
Nomenclature. (Proc. 7th Int. Cong. Boston, 1907, p. 44 (1912) —Eprror. | 
