292 MR. J. O. WESTWOOD ON NYCTERIBIA. 
The references of this species to Linnzus and others, given by Dr. Leach, must be 
considered as dubious. Frisch has represented an insect which from the shortness of 
the legs may possibly be intended for this species!. That it is not the one figured by 
Latreille in the ‘ Histoire Naturelle’ and the ‘ Genera Crustaceorum’ (with which it is 
doubtfully considered as synonymous by Dr. Leach) is evident from the length and 
slenderness of the legs in the figures contained in those works. 
11. NycTERIBIA BIARTICULATA. 
Nyct. pallide ochracea, abdomine obscuriore ; pedibus elongatis, dilatatis, longé setosis, setd 
unicd ad basin tibiarum longissimd, coxis anticis brevibus ; abdomine ? quasi 2-arti- 
culato, segmento primo supra longits producto, stylis duobus caudalibus elongatis cylin- 
dricis porrectis ad apicem longeé setosis ; 3 6?-articulato, subtus ad apicem stylis duobus 
incurvis ad ventrem adpressis ; thorace subtus concolore. (3, 2) 
Long. corp. lin. 14 (2 secundum Leach). 
Phthiridium biarticulatum, Herm., Mém. Apt., pl. 6. f. 1. 2. 
Phthir. Hermanni, Leach, Zool. Misc., wii. pl. 144. 3; ?. 
Celeripes Vespertilionis, Mont., in Linn. Trans., ix. p. 166. 
Nycteribia Vespertilionis, Mont., in Linn. Trans., wi. p. 11. t. 3. f. 5. ¢. 
Hab. in Rhinolopho Ferro-equino Angliz, Germanie, Italie. 
Mus. Brit., et Stephens. 
Oss. Species distinctissima, sectionem peculiarem in genere constituens. 
I have restored Hermann’s name for this species, to obviate the confusion which has 
arisen from his chief description having been derived from a different species, as well 
as from a sense of justice to that author?. 
‘ Ins. Deutschl., vol. i. part 5. pl. 5. 
2 Since the above Paper was read, Dr. Horsfield has been so kind as to afford me an opportunity of examining 
a large Nycteribia, collected by himself in Java, and contained in the collection of the East India Company, 
which differs from Nyct. Sykesii only in haying the terminal abdominal sete extending to some distance along 
the middle of the disc of the abdomen. 
I may add that Dr. Perty has published the description and figure of a minute insect, which appears to be 
nearly allied to Nycteribia, in the ‘ Delectus Animalium Articulatorum Brasilie’, under the name of Lipoptera 
Phyjllostomatis. The description is not, however, sufficiently precise to enable me to judge with certainty of 
its real structure. 

