the Coccid genus Leucaspis. 463 



Leonard! divides the genus into three subgenera, which 

 he defines as follows : — 

 I. Pygidium furnished with "pectines" (= "plates," of 

 Comstock). 



A. Pygidium with " trullae " (=" lobes ") Leucaspis 



(s. str.). 



B. Pygidium without " trullae " . . . Anamaspis. 



II. Pygidium without " pectines " . . . . Actenaspis. 



His Anamaspis was erected to contain the single species 

 loewi {= sulci), but would now include indiae-orientalis, 

 kermanensis, pistaciae and solids. 



His Actenaspis was similarly made to contain a single 

 species— jOM5i7?a. He designates the marginal processes 

 of this species by the term " appendices," differentiating 

 them from the " pectines " attributed to the species that 

 he restricts to Leucaspis. I fail to see in what essential 

 particular these processes on the pygidium of pusilla differ 

 from those of pini, or signoreti. They arise in the same 

 manner and from the same area in all three species, and I 

 hold them to be strictly homologous structures. 



Leucaspis perezi, sp. nov. 



Puparium of female narrow, of normal form : consisting of the 

 blackish larval and nymphal pellicles thinly veiled by a white 

 secretionary covering which extends as a narrow border surrounding 

 the nymphal pellicle. Length T 25 to 1-8 mm. ; the average length 

 being approximately 1 • 5 mm. Larval pellicle dark brown, brownish- 

 ochreous at the anterior and posterior extremities. Nymphal 

 pellicle black or very dark brown, paler at posterior extremity. 

 Length of nymphal pellicle 1'15 to I'S mm.; average length of 

 20 examples 1*28 mm. 



Male puparium white : larval pellicle dark olivaceous brown. 

 Length 1*5 to 2 mm. 



Adult female (fig. 1) of normal form, narrowing to the rounded 

 cephalic extremity; widest across abdomen the sides of which are 

 broadly rounded and constricted rather abruptly at the base of the 

 pygidium. Rudimentary antennae conspicuous, consisting of a 

 cliitinous tubercle surmounted by from 3 to 4 stout spine-like setae. 

 Tentorium very large and conspicuous. Anterior spiracles situate 

 close to tentorium ; posterior spiracles at junctions of thoracic and 

 abdominal areas ; the two pairs widely separated. A small group 

 of from 5 to 6 parastigmatic pores above the anterior spiracles. In 



