100 PROCEEDINGS OF THE NATIONAL MUSEUM. tol. 60. 



genus, or whether it should remain in the group of species of which 

 Lepidosa'phes is typical. 



Genus COCCOMYTILUS Leonardi. 

 Plate 6, fig. 1. 



Genotype — MytUaspis convexa Maskell. 



References.— YQviiHildi, Cat. Cocc. World, 1903, pp. 304, 307.— Leon- 

 ardi, Ann. R. Sc. sup. agr. Portici, ser. 2, vol. 5, 1904, p. 4, 9. 



Leonardi apparently failed to designate a type species for this 

 genus, and it seems to have -first been set in the Femald catalogue. 



The Maskell collection contains a single slide of " adult female, 

 1892" and a small quantity of uinnounted material of this species, 

 the latter under No. 347. 



Adult female. — Scale as described by Maskell and Leonardi ; body 

 elongate, broadest about the middle, narrowed anteriorly; cephalo- 

 thorax and anterior abdominal segments in fully matured individuals 

 hardened, chitinized, and brittle, remainder of abdomen, except 

 portions of the pygidiiim, membranous; antennae small tubercles 

 bearing two setae of unequal length and some conical protuberances ; 

 spiracles small, anterior with 3-5 pores, posterior with 2-3 pores; 

 head with some pairs of small setae around margin; margins of 

 thoracic and abdominal segments with clusters of numerous tubular 

 ducts, some ventral, some dorsal ; with a cluster of conical gland 

 spines with somewhat enlarged bases ventrally posterior to each 

 spiracle ; with similar gland spines ventrally on the second and third 

 abdominal segments near margin; with a few marginal setae and 

 straight, tapering gland spines on remaining segments; pygidium 

 somewhat chitinized, the margin uniformly curved, with three pairs 

 of lobes, all protruding, the median large, prominent, the apical 

 border rounded and more or less distinctly notched at each side, sec- 

 ond lobes about half as long and wide, the posterior margin nearly 

 straight, somewhate crenulate, third lobes well beyond second, ob- 

 tusely triangular, the outer face longest, margin beyond this irregu- 

 larly toothed and incised developing projections resembling the 

 third pair of lobes but not chitinized ; gland spines present, two 

 betw^een median lobes, two between these and second lobes, first two, 

 then one, between second and third lobes, two outside of third lobes 

 and two more beyond two toothlike projections of the margin, all 

 small but gradually enlarging from the median out; marginal setae 

 present, dorsally one inside, one outside each median lobe, one out- 

 side each second and third lobe, one beyond marginal projection, 

 ventrally one outside each median lobe, and one below and beyond 

 each of the remaining dorsal setae, these all fairly large ; no incisions 

 with thickened edges; no chitinous paraphyses; anal opening rather 

 small, approximately circular, placed near the base of the pygidium ; 



