1392.] 141 



ON NEW OR LITTLE KNOWN COCCIBM, CHIEFLY ENGLISH (No. 2), 



BY R. NEWSTEAD, F.E.S , 



CURATOR OF THE GROSVENOR MUSEUM, CHESTER. 



PLATE II. 



LeCANIUM minimum, 11. sp. 



? adult. Yellowisli-browii, flat, elongate, narrowly rounded in front; surface 

 rugosely punctured, with a strong central carina commencing just behind the black 

 eje-spots and terminating at the caudal scales. Dermis with a large and nearly 

 ^'ircular tesselation. Margins with equidistant hairs, more numerous near the anal 

 cleft. Caudal scales with four or five strong, short hairs. Antennae (fig. 1) of seven 

 joints, of which the 3rd, 4th and 7th are the longest, and in length nearly equal ; 

 the 5th and 6th shortest ; 1st and 2nd half the length of the 3i'd. Rostral filaments 

 (loop) extending just beyond insertion of posterior legs. Legs (fig. la) rather short ; 

 tarsi very little shorter than tibiae. Long, •75—2-50 mm. ; wide, '25—1 mm. 



This species, which lives on Areca and Abutilon, exactly resembles 

 very young females of Lecanium hesperiduvi, but that it is not that 

 species I am certain, as I have kept living examples under my obser- 

 vation on a growing plant for about twelve months, during which time 

 several generations were produced, but none ever exceeded the 

 measurement given above. The species is, therefore, clearly distinct, 

 and, from its small size, cannot be confounded with any hitherto 

 described. I was unable to discover a male, or ova, so the female is 

 undoubtedly viviparous. This and the other characters given place it 

 in Signoret's first series. 



Lecaj^ium assimile, n. sp. 



? adult. Long-oval, narrowed, and somewhat produced in front; dark red- 

 brown, or piceous, more or less shiny ; slightly gibbous in the middle, deeply 

 and irregularly foveolate at the sides, forming ia-regular carinee more prominent 

 near the margin. Antennae (fig. 2) of seven joints, of which the 3rd and 4th are 

 the longest and in length equal ; the 1st, 2nd and 7th shorter ; 5th and 6th shortest. 

 Legs (fig. 2a) long and slender ; tarsi about half the length of the tibiae ; digitules 

 to tarsi and claws slender. Long, 4 — 5'25 mm. ; wide, 2 — 3'50 ram. 



LarvfP : several were restored by boiling in potash, but they offered no salient 

 distinctive characters. 



Hab. : on Grindelia hirswta. Received from Mr. Alfred O, 

 Walker, Colwyn Bay, N. W. 



This species evidently belongs to Signoret's second series, and is 

 ;i11ied to L mori., Sign., and L. persic<B (Essai, p. 237). It is like the 

 former in the form of the scale and antennae ; but differs in the length 

 of the tarsi, and in not having the " grooved legs " described by 

 tSignoret. It is at once separated from the latter, which has eight 

 joints to the antennae. Described from five females. 



