Vol. Xxii] ENTOMOLOGICAL NEWS 147 



tain, and no Caloptery-gine other than Hetaerina is at present 

 known from Jamaica. The characters of the caudate gills and 

 of the mandibles are sufficiently interesting, even though the 

 nymphs are not fully determinable. 



Herewith I describe briefly and illustrate nymphs, I judge 

 to belong to the following species : Ncnrobasis chinensis 

 Linn; Calopteryx angustipennis Sel. ; Anisoplcnra comes 

 Hagen; Bayodcra indica Sel. ; Unknown nymph from Jamaica. 



Neurobasis chinensis (supposition). (Plate IV, figs. 1-4.) Hagen, 

 C. R. Soc. Ent., Belg., Vol. 23, p. Ixv, 1880. 



Several well grown nymphs in which the venation of the 

 adult could be in part recognized in the wings enabling me to 

 verify generically, at least, Dr. Hagen's supposition. No. 302, 

 M. C. Z., "Billespur, Himalaya, India. Carleton, 1872." 



Length, 30; lateral gills, 13 additional; median gill only 9 mm.; 

 abdomen, 20: mind femur. 7 mm.: width of head, 3 mm.; of abdomen, 

 2.2 mm. 



Body very elongate, slender and smooth. Head depressed, longer 

 than wide, narrowed both ways from the laterally prominent eyes, and 

 without dorsal tubercles. Antennae very long, the basal segment being 

 about twice as long as the head is wide, fusiform, and pubescent, espe- 

 cially upon the inner side, the second segment about one-eighth as long 

 as the first, and the remainder comprised in an unjointed slender 

 and tapering flagellum, that is somewhat longer than the second joint. 

 Labium slender, the hings reaching posteriorly to the mesothorax, 

 basal half of the mentum with parallel sides, suddenly widening just 

 beyond the middle to the bases of the lateral lobes, and then regularly 

 narrowing to the greatly produced tip, the anterior half being occupied 

 by a deep and wide oval median cleft, that is closed in front by the 

 close apposition and partial adherence of the slender lobes that bound 

 it ; these lobes show a slight constriction near the tip, and there is a pair 

 of spinules on the inner margins of the cleft at two-thirds its length. 

 The median cleft descends through somewhat more than half the 

 length of the mentum. The lateral lobes are very slender, almost 

 linear, with doubly and finely serrate inner margin, ending in a slender 

 and nearly straight hook, above which are two similar but larger hooks 

 on end, and above these three that together terminate the lateral lobe 

 is the usual movable hook on the external margin, with three minute 

 spinules just before its base above. 



