16 Transactions. — Zoology. 



deed those of L. dcpressum, Targioni, though they are more 

 translucent than in the latter. In point of fact, there would 

 seem to be much similarity in the markings of several species 

 of Lecanium, and identification is not easy. Comstock (Ag. 

 Eeport, 1880, p. 336) says that the anogeuital ring of L. olea 

 has only six hahs : this may serve to further distinguish L. 

 cassinice, ^vhere, as in most insects of the genus, these hairs are 

 very numerous. 



Lecanium longulum, Douglas. 



Lecanium chirimoliie. mihi, N.Z. Trans., vol. xxii., 1889, 

 p. 137. 



In the Entomologist's Monthli/ Magazine, vol. xxiv., 1887, 

 p. 97, Mr. J. W. Douglas describes a species, L. longulum, 

 with food-plant (amongst others) Annona vmricata. I had 

 not seen his description when writing last year on L. chirimolia, 

 but have since not only read it but had the opportunity of 

 examining two specimens which Mr. Douglas has been good 

 enough to send me. I am compelled to consider the two 

 species as identical, and to abandon mine. The extremities of 

 L. longulum are rather more broadly rounded than in my own 

 types, but I do not consider the difference as important. Mr. 

 Douglas is inclined to think that L. longuhim has antennae of 

 eight joints, but he is doubtful on the point. In my Fijian 

 species the antenna has certainly seven joints, and I believe 

 this will also be the case with the other. The same genus of 

 plants fin"nishes a food-plant for both insects. I think that 

 the abdominal cleft and the distance of the antennae from the 

 cephalic extremity are perhaps a little longer in my specimens 

 than in those of Mr. Douglas. The dorsal "long pale clear 

 oval spot " mentioned in the description of L. longulum is not 

 to be detected in the dead dried specimens before me. But, 

 on the whole, I deem it best to identify the two species, and 

 therefore to abandon L. chirimolia in favour of Mr. Douglas. 



Lecanium ribis, Fitch, Trans, of New York Agric. Soc, 

 1856 ; Signoret, Essai, p. 462. 



Adult female dark-brown in colour, or with a slight reddish 

 tinge. Form semi-globular, attached to the plant by the 

 edges, which are not broadly flattened ; becoming hollow at 

 gestation, with eggs and larvae beneath. Diameter averaging 

 about lin., but sometimes reaching ^in. Epidermis not 

 carinated, nor exhibiting any oval perforations or tessellated 

 markings ; btit near the margins there are many fine transverse 

 corrugations or small wrinkles. 



Female of second stage yellow or yellowish-brown, flattish, 

 elongated, elliptical. Length about rsin. It is not cari- 



