189S.] 273 



or indistinct in adult individuals, but in the immature it is seen that there is a broad 

 whitish ante-humeral band, which is curved and obtuse at its base, and anteriorly is 

 continued half the length of the thorax as a fine line (not connected with the basal 

 portion as in the type-form) ; on the sides are two broad whitish bands divided by a 

 black line at the metathoracic suture (in the Sumba form there is a fine humeral line 

 parallel with the ante-humeral, but separated from it by a fine black line on the 

 mesothoracic suture). The wings are only faintly tinged in immature examples. 



By its large size and in other respects this seems to be a distinct 

 local form. As a rule I am disposed to deprecate the naming of 

 varieties in Odonata, biit the Galopterygincd lend themselves so much 

 to local variation, that such a process (especially in insular forms) is 

 here sometimes advantageous. 



LiBELLAGO LOMBOCKENSIS, Sp. n. 

 S (adult). i?ea(^ and fAoraa? deep black, with yellow markings : on the head 

 there is a large semi-ovate yellow spot at the corners of the mouth, almost connected 

 with a short broad line (obliquely divided into two parts) on the orbits ; a minute 

 yellow point (sometimes barely visible) on each side of the base of the epistome ; on 

 the top of the head are six yellow points, viz., one on each side transversely in the 

 anterior portion, one on each side longitudinally in the median portion, and one on 

 each side posteriorly, subtriangular in form and widely separated, on the back of the 

 dark brown eyes : prothorax having its raised anterior margin yellow in the middle, 

 a yellow point in the middle of its posterior margin, on which is a large reniform 

 point on each side, anterior to each of which is a small (nearly obliterated) spot ; the 

 hinder lobe forming a small semicircular lamina fringed with black hairs : thorax 

 having its anterior sinus short, broad and triangular, about one-third of the entire 

 length ; the yellow thoracic markings are as follows :- — a curved ante-humeral an- 

 terior line (broadest anteriorly) scarcely reaching to half the length of the thorax, a 

 narrow posterior humeral line, curved in the opposite direction, commencing above 

 the anterior wings and extending for more than half the length, a short, narrow 

 posterior line below the anterior wings, a broad band on each side (slightly constricted 

 in its middle) above the mesothoracic suture, not extending to the base, followed by 

 a similar, but shorter, metathoracic band abbreviated anteriorly, its end underlying 

 that of the superposed band ; on the pectus the coxal insertions, a broad semilunate 

 transverse spot on the metasternal area anteriorly, and a similar narrower one pos- 

 teriorly, are yellow ; interalar area spotted with yellow. 

 Legs black ; trochanters yellowish beneath. 



Abdomen slender and attenuate, red (no doubt bright red in life) ; first segment 

 black, reddish in its middle posteriorly above, and with a large suborbicular yellow 

 spot on each side ; genitalia of second segment black, and the sutures of the seg- 

 ments are narrowly black (scarcely evident on the posterior) ; 10th segment (reddish 

 in its middle above) and appendages black : superior appendages shorter than the 9th 

 segment, slender, forcipate, somewhat geniculate in the middle, beyond which the 

 apical portion is slightly clavate ; inferior appendages shorter, subcylindrical, the 

 apices incurved. ^ 



Wings narrow, hyaline, with black neuration ; pterostigma black, scarcely di- 



