NEW SPECIES OF CERATOPOGOX. 9 



of black claws ; anal feet fleshy, armed with two rows of black 

 claws. Chjetotaxy of lateral half of head and body as follows : head 

 ornamented behind with one honey yellow, semitransparent, barbellate 

 bristle, in front of which is a large short simple spine, with white bulbous 

 base, in addition to a few simple bristles. Body with three longitudinal 

 rows of barbellate bristles, dorsal bristles honey yellow, enlarged in center ; 

 thoracic pair much enlarged and shorter than the others ; the dorso-lateral 

 bristles rise from double tubercles, which are simple on the last two seg- 

 ments ; anterior limbs of these tubercles tipped with long honey yellow 

 bristles ; those of the posterior limbs short and black ; lateral row of small, 

 simple tubercles tipped with dark brown bristles ; then subventrally are 

 several scattered simple bristles. 



FlG. 5. C. wheeleri. a, pupa; &, dorsal bristle; c, enlarged protJoracic dorsal 

 bristle ; d, furcate tubercle with its two bristles; e, lateral bristle. 



C. texfinus. h, dorsal clavate bristle ; /, lateral furcate tubercle with its bristles ; 

 n, small lateral bristle ; m, characteristic spine of pupa ; r, thoracic stigma of pupa. 



Pupa: 2.5-3 mm. long, pale yellow, head darker. Thorax with four 

 large barbellate spines on each side and several small ones with mucronate 

 tips ; anterior abdominal segments which are not incased in larval skin, 

 with five longitudinal rows of barbellate spines ; the spines of rows 2 and 

 4 longer and larger than the others. Ventrally is a row of very short 

 spines with mucronate tips. Anal segment forked with two finger-like 

 bodies at base of furcation. These tips were divergent in life and prob- 

 ably serve to retain the larval skin on the anal segments as the spines are 

 obsolete under this skin. These appendages were observed in all the 

 species of which puparia were seen. Duration of pupal stage 8-10 days. 



