EXPLANATION OF THE PLATES. 255 



Plate XX 1 1 1. fig. 1. Ornithobius Cygni, 1 a, posterior leg; 1 6, anterior 

 leg ; 1 c, one of the clypeal processes ; 1 d, one of the 

 mandibles ; 1 e, antennae ; If, antennae of female. 



fig. 2. Ornithobius gonioplurus, 2 a, posterior leg ; 2 b, anterior 



leg; 2c, antennae of the female; 2 d, antennae of 

 the male. 



fig. 3. Ornithobius atro-marginatus, 3 a, antennae ; 3 b, ante- 

 rior leg. 



fig. 4. Laemobothrium laticolle, 4 #, under view of the oral 



apparatus ; 4 b, maxillary palpi ; 4 c, labial palpi ; 

 4 d, posterior leg. 



fig. 5. Physostomum Bombycillae, 6 a, posterior leg. 



fig. 6. Physostomum mystax, 5 a, posterior leg. 



Plate XXIV. fig. 1. Gyropus ovalis, 1 a, anterior leg; 1 b, posterior leg ; 1 c, 

 antennae. 



fig. 2. Gyropus gracilis, 2 d, antennae; 2 e, posterior leg ; 2/ 1 , 



anterior leg. 



fig. 3. Haematopinus acanthopns, 3 a, posterior leg ; 3 &, an- 

 tennae. 



fig. 4. Haematopinus Lyriocephalus, 4 , antennae ; 4 b, ante- 

 rior leg ; 4 c } posterior leg ; 4 d, ova. 



fig. 5. Haematopinus spinulosus, 5 a, antennae ; 5 b, anterior 



leg ; 5 c, posterior leg. 



fig. 6. Haematopinus spiniger, 6 a, posterior leg ; 6 b, antennae. 



Plate XXV. fig. 1. Haematopinus Asini, a, anterior leg ; &, antennae. 



fig. 2. Haematopinus suis, c, anterior leg ; d, antennae ; e, mag- 

 nified view of the Haustellum. 



fig. 3. Hsematopinus Vituli, pr, antennae ; h, posterior leg. 



fig. 4. Haematopinus piliferus, i, antennae ; k, posterior leg. 



fig. 5. Haematopinus eurysternus, I, antennae ; m, anterior leg; 



f, one of the ova. 



- fig. 6. Haematopinus ventricosus, n, antennae ; o, posterior leg. 



Plate XXVI. fig. 1. Pediculus vestimenti, a, antennae; b, posterior leg; c, 

 anterior leg ; e, haustellum withdrawn ; f, do. par- 

 tially protruded ; g, do. exhibiting the lateral horny 

 hooks ; h, do. with the setiferous sheath. 



fig- 2. Pediculus Capitis, i, anterior leg;,/, posterior leg? d, 



antennae. 



fig. 3. Phthirius inguinalis, k> anterior leg ; l } antennae ; in, 



posterior leg. 



t t No allusion is made in the body of the work to fig. 7, pi. VI. which 

 was drawn from a specimen found beneath the wing of an Avocett, which 

 had been stuffed upwards of 20 years. Several months subsequently, I re- 

 ceived recent specimens of the Nirmus decipiens, pi. XI. fig. 2. from Dr. 

 Burmeister, and upon comparing the above with these, I suspected it might 

 be the immature state of that species, but from the dried and evidently 

 much altered appearance of the specimen, I could not satisfy myself upon 

 their identity, though it bore a strong resemblance in some points. For 

 this reason I omitted any description lest I should lead to error. 



