298 Transactions. — Zoology. 



racter. In size, colour, scaly serrated hairs, &c., the insects 

 from Hongkong exactly resemble those on cocoanut from 

 Mauritius and the Laccadive Islands. (See " Indian Museum 

 Notes," vol. iii., p. 66.) 



Aspidiotus setiger, sp. nov. Plate XVIII., fig. 3. 



Puparium of female very dark-drown or intense dull- 

 black ; circular ; convex ; diameter, about xV^- '^^^® larval 

 pellicle is central, very small, forming a minute apical shiny - 

 black boss. Texture of puparium thick and solid. On 

 turning it over the inside is smooth and black, with reddish 

 edge. 



Puparium of male light-brown, subelliptical, flattish ; 

 length, about -^-^in. Pellicle yellowish. 



Adult female very dark-brown ; form normal ; length, 

 about ^§hi. Abdomen tapering, with rather wavy sides ; 

 terminated by six subequal lobes, the outer margins of which 

 are sloping and very minutely serratulate ; between the two 

 median lobes are two short, slender, club-shaped organs, and 

 above them four others longer and larger. The margin of the 

 abdomen beyond the lobes is serrated and marked with many 

 short, elongated pores set closely together. Between the 

 lobes are some short, serrated, scaly hairs. Four groups of 

 spinnerets : upper groups with 10 to 14 orifices ; lower 

 groups, 10 to 12. On the thoracic and cephalic regions there 

 are several rather long hairs with tubercular bases. 



Adult male unknown. 



Hab. In Japan, on Qucrcus, sp. My specimens were sent 

 by Mr. Koebele from Yokohama. 



This insect approaches A. rossi in the form and colour of 

 the puparium and in the abdominal lobes, but it is larger, 

 and differs also in the club-shaped organs. The thoracic and 

 cephalic spiny hairs appear to separate it from all known 

 species. 



Aspidiotus dictyospermi, Morgan, var. arecse, Newstead. 



This insect has been sent to me by Dr. Alcock, of the 

 Indian Museum, on tea, in India : the exact locality is not 

 mentioned. All the characters agree with Mr. Newstead's 

 description. 



Genus Diaspis. 

 Diaspis calyptroides, Costa. 



During the year I have received from Dr. Alcock, of the 

 Indian Museum, Calcutta, an insect on prickly pear from 

 Southern India, which I found on examination to be identical 

 with a form known as Diaspis cacti, Comstock (2nd Cornell 

 University Eeport, 1883, p. 91). On further and closer 

 scrutiny it appeared to me that D. cacti could not be speci- 



