Ill 

 " SOME NEW CEYLON COCOIBJEr 



BY 



A. Rutherford, m.a., b.sc.,* 

 Govt. Eiit. of Cej^lon. 



Ripersia Ihece, sp. no v. 



Adult female, oval-cylindrical, about 2 mm. long, enclosed in a loose 

 white test. 



Derm thickly studded with small, circular gland-pores. Antenna of seven 

 segments, the seventh segment much the longest and ending in a lono 

 seta ; basal segment broader than long ; segments 3, 4, 5 and 6 shortest 

 and of much the same length ; setie on all segments. Legs well develop- 

 ed, very stout. Coxa stout, and twice as broad as long ; femur stout usually 

 not more than twice as long as broad ; tibia but slightly longer than the 

 tarsus and both stout ; tarsal claw broad at base, sharply incurved at the 

 apex ; digitules present, tarsal simple, ungual apparently dilated at apex. 



Anal ring with six long setse ; the setse rise from a hyaline band bor- 

 dered on each side by a row of gland-pores. Anal lobes indistinct : 

 position indicated by a long seta ; near the base of this seta a group of 

 small, scattered, circular pores, two stout conical spines and several more 

 slender spines. Similar groups of pores and spines (2 or 3 in a group) 

 occur on the lateral margins of the segments in front of the anal segment. 

 Stout conical spines and a few long slender spines and numerous small 

 pores occur all over the bodj'. 



On branches of tea at Peradeniya, June 1913 and July 1914. All the 

 insects in one colony were irregularly ruptured at one end and resembled 

 somewhat small dipterous puparia from which the adult fly had escaped. 

 A colony of what was probably the same species of insect, observed in June 

 1913, had been apparently completely exterminated by the caterpillars of 

 Spalgis epius, a large number of the j)up£e of this Lyccenid, occurring on 

 the bush. 



This insect in the seven-segmented antennte and in the general character 

 of the legs resembles Dactylopius tliececola, Gr., described from roots of tea 

 plants from India. It shows many points of difference however. 



Coccus litzece, sp. nov. 



Female insect flattish, dark-brown and covered with granular paletus of 

 yellowish-white wax. There is a medium dorsal and two submarginal 

 ridges; the medium ridge is connected with the submarginal ridges by 

 two transverse ridges and numerous ridges run from the submarginal ridges 

 to the margin. The shape is roughly circular, the anterior end sometimes 

 being slightly acuminate. Length about 3 mm. It resembles somewhat 

 L. piiperis, Gr., but is much darker in colour and eyes are not visible. 



Male scale occurring along with female, scarce ; composed of 18 plates. 

 In slide preparations the positions of the ridges stand out as translucent 

 areas ; the mid-dorsal clear area does not reach to the anal plates. 

 Oval translucent areas occur in groups, especially on the marginal and sub- 

 marginal areas and cephalad of the anal plates. There is a particularly 

 prominent group towards the inner margin of each of the chitinised areas 

 lying between the clear areas corresponding to the ridges ; it lies just 

 lateral of the position of the submarginal ridge. 



"■SYq regret to announce that Mr. Rutherford has died since writing- this paper — Eds. 



