Studie o Coccidech. 15 



Summary of the bohemian text. 



Syngenaspis Parlatoriae n. g. n. sp. 

 Mytilaspís Newsteadi n. sp. 



Cryptococcus fagi Baernsprukg def. em. 



For tlie description I háve ušed speciinens both living and 

 boiled in KOH and niounted in glycerin ; of each species I háve 

 examined 10 specimens at least as to become fully acquainted with 

 the degree of variability of some organs especially of the number of 

 the wax-ducts. 



Numerals attached to single organs indicate therefore the limils 

 of their variability in number. 



Syngenaspis n. g. 



Scale of the íirst larva ((5', 9) (Tab. 1. fig. 4.) is elliptical, 

 convexed, of an equally thin layer of a white waxmatter, which forms 

 on the head only a sraall, discshaped heap, excavated on the apex. 



Length of the scale: 0"5 mm. 



Scale of the (^ (Tab. 1. fig. 6), white, flat, not carinated, with 

 parallel sides, rounded or acuminated posteriorly. The cast skin of 

 the Ist larva which retains its covering of the waxy scale, lies at 

 the cephalic extremity. 



Length: 1 mm. 



Scale of the 9 (Tab. 1. fig. 5) ; exuviae of larvae lie, at the 

 cephalic extremity; the first of them retains the white waxy larval 

 scale; the second is covered with a thin, ochreous, waxy layer and 

 is elongate-elliptical, rounded posteriorly; the following part of the 

 scale secreted by the adult female is ochreous yellow, ílat, with a more 

 or less distinct impression, with parallel sides or convex on one flank, 

 and rounded posteriorly. Ventral scale reaches to the first third of the 

 length of the scale and only a little inwardly ; antennae stumpshaped, 

 extremities Avanting ; two pairs of stigmata ; five groupes of spinnerets, 

 three (sometimes 4) pairs of lobes on telson, which is not limited 

 against the body distinctly and has no diífusely thickened cuticula. 



Length: 1*5 mm. 



Syngenaspis Parlatoriae n. sp. 



Adult female (Tab. 2. fig. L) oval, flat in the whole, yello- 

 wish rosecoloured ; the body is distinctly segmentated; the head, pro- 



