64 THE COCCIDAE 



and consist of six segments which are enlarged so that the distal 

 portion of the flagellum is distinctly clavate. This enlargement is 

 located in the segment which bears several short setae and about 

 four setae which are longer than the entire antennae. There is a 

 single ocellana located on each side of the head on a tubercle 

 which is situated near the articulation of an antenna. The 

 segmentation of the body is indistinct but more distinct than is 

 usual with coccids and more distinct than in the later nymphal 

 stages of this species. The rostralis extends as a loop into the 

 long deeply invaginated crumena. The head, thorax, and abdomen 

 bear numerous cerores which are arranged in longitudinal rows, 

 one along each lateral margin and four others between them. 

 These cerores form transverse rows, two on the head, three on the 

 prothorax, two each on the mesothorax and metathorax, and one 

 on each of the nine abdominal segments. The setae are numerous, 

 placed among the cerores and like them arranged in transverse 

 rows. The cuticle bearing each seta is swollen, pimple-like, and 

 forms a chalaza. The calyx marking the articulation of each seta 

 to its swelling is distinct. On the antennae, legs, and rostrum the 

 setae are of the ordinary type. The setae are longer on the lateral 

 than on the mesal portions of the body, while the six setae at the 

 caudal end of the abdomen, three on each side of the meson and 

 known as the anal chalazae, are as long as the entire body. These 

 setae are always borne by large swellings. The short, smooth, 

 transverse areas between the cerores and chalazae mark the posi- 

 tion of the coriae. The legs are normal in form and all their 

 sclerites are easily identified. Each coxa bears a distinct coxartis 

 which articulates against a coxacoila located in a curved linear 

 episternum. The ental surface of this sclerite is produced as a 

 distinct apodema. The thoracic spiracles are normal in position. 

 Each contains a prominent spiracularia extending into the body 

 cavity from the cephalic margin of the peritreme, which in the 

 case of the metaspiracle is connected with the mesapodema. The 

 abdominal spiracles are very small and difficult to identfy. They 

 are located in two pairs on the seventh and eighth abdominal 

 segments. The rectum is chitinized forming a rectal tube bearing 

 rings of anacerores. The portion of the rectum situated between 

 the anus and the rectal tube is flexible and not strongly chitinized. 

 The sexes are indistinguishable during this nymphal stage. 



The individuals of the first nymphal stage of this subfamily 

 are, so far is known, characteristic in form. The long clavate 



