PEDTCDLIP;R, POLYCTKNIPiE. 
489 
Antennae 5-jointed. 
Thorax and abdomen not sharply sepa- 
rated rhthirius, Leach. 
Thorax and abdomen sharply separated. 
Thorax gradually reaching the width 
of the abdomen Pediculus, Linn. 
Thorax narrower than the large ab- 
domen Ilcematopinus, Leach. 
Antennae 3- jointed Pedicinus^ Gervais. 
Phthirkis inguinalis, Redi (puhis, L.), pi. i. fig. 8, Pediculus vestimenti, 
Nitz., pi. i. fig. 6 , capitis, Nilz., pi. i. figs. 1 & 2, Pedicinus eurygaster, 
Gerv., pi. i. fig. 3, Hcematopinus sphccrocepTialus, Denny, pi. i. fig. 4, serratus, 
Denny, pi. i. fig. 6, acanthojms, Nitz., pi. ii. fig. 3, clavicornis, Nitz., 
leucophccus, Burm., hispidus and Iceviusculus, Grube, spinulosus, Nitz. 
(denticulatus, Nitz.), pi. i. fig. 7, spiniger, Denny, pi. ii. fig. 1, affinis, 
Denny, pi. i. fig. 9, lyriocephalus, Burm. (lyriceps, Nitz.), pi. ii. fig. 2, 
piliferus, Burm. {canis-familiaris^ Mull, isopus and flavidus, Nitz.), 
crassicornis, Redi, pi. ii. fig. 7, eurysternus, Nitz., pi. ii. fig. 8, sctosus, 
Burm. {phoccB, Luc.), tenuirostris, Burm. (vituli, L., oxyrhynchus, Nitz.), 
pi. ii. fig 9, hrevicornis, sp. n., p. 43, from Camelopardalis giraffa, Am- 
sterdam, stenopsisy Burm. (schistopygus, Nitz.), pi. ii. fig. 4, macrocephalus, 
Nitz. {asini, L.), pi. ii. fig. 5, urius, Moufet (sm‘.5, L.), pL ii. fig. 6, tuber- 
culatus, Nitz., and ventricosus, Denny, are described and (where indicated) 
figured. Hcematopinus reclinatus, Nitz., spiculifer, phthiriopsis {huffali, 
Deg.), and saccatus, Gerv., cameli, Redi, and leptocephalus,'EhveTih., are also 
briefly discussed. The alimentary canal of H. lyriocephalus is figured, 
pi. XX. fig. 1. 
POLYCTENIDJE. 
This family is proposed by Westwood, Thesaurus ent. oxon., for the 
reception of the genus Polyctenes, characterized by him at p. 198, and 
including P. fumarius, sp. n., pi. xxxviii., parasitic on the bat Molossus 
fumarius, from Jamaica, and P. molossus (Westw. & Giglioli), pis. xxxix. 
xl, parasitic on M. chincnsis. Both possess a haustolluui, very similar 
in form to that of the genuine Hemijdera-lleteroptera, and are set 
with rows of strong flat spines. It seems doubtful whether, in a more 
advanced stage of growth, the dorsal scales in these species might not be 
further developed into elytra or hemelytra. 
