THE CANADIAN ENTOMOLOGIST 61 



portion of first and second terga, and proximal portion of saw- 

 guides, black or brownish. — Colorado smithi Rohwer. 



aa. Head and thorax, except pleura?, glossy black ; frontal crest moderate- 

 ly prominent, deeply interrupted by an extension of the elongate 

 suboval median fovea; ocellar basin distinct with rounded walls 

 extending around median ocellus; antennae with third and fourth 

 segments subequal; head and thorax finely setaceous; saw-guides 

 straight above, pointed at distal end above, and ventral margin 

 convex and oblique at distal end; colour reddish-yellow with 

 head, including clypeus, labrum and antennae, the pronotum 

 except the lateral portion, the mesothorax and metathorax 

 except the lateral aspects; the pectus, and the tips of the tarsi 

 black; the proximal portion of the stigma and the longitudinal 

 veins extending through the disc of the wing blackish ; the male 

 differs in having the antenna? reddish-yellow and the frontal 

 crest obsolete and the sides of the median fovea continuous with 

 the sides of the ocellar basin ; the proximal end of the ventral 

 side of the third antennal segment provided with a blunt, rounded 

 projection. — \ ictoria, British Columbia, bred by \V. Downes 

 from larvae on lombard>- poplar. — Type deposited in National 

 Collection of Insects, Ottawa, from which it was 

 received victoria , n . sp . 



NOTES ON COCCI D.t VL (HEMIPTERA).* 



BV G. F. FERRIS. 



Stanford University, Calif. 



Genus Porococcus Ckll. 

 Coccidae referable to the subfamily Dactylopiinae (of the Fernald Cata- 

 logue) and belonging to the Pseiidococciis group, that is, with at least the posterior 

 pair of dorsal ostioles present. Adult female with the legs and antennae present, 

 the former without a tooth on the claw, the latter 6-7-segmented ; without 

 cerarii of the usual type but with the last three or four abdominal segments 

 bearing at each lateral margin a chitinized area which may be continuous with 

 a chitinized area extending across the dorsum of the segment and is beset with 

 stout, conical spines; trilocular pores numerous and very conspicuous; anal 

 ring with six long setae, well developed and heavily chitinized, not borne at the 

 inner end of an invagination. 



Adult female enclosed within a test of hard, black secretion which in texture 

 much resembles that of the genus Tachardia. 



Type of the genus, Porococcus tinctoriiis Ckll 



Notes. — In the Fernald Catalogue this genus is placed near Ericoccus but 

 it is distinctly a pseudococcine form. At present the genus contains but the 

 type species and another, P. pergandeii Ckll., both of which occur on mistletoe 

 in Mexico. 



-*Continued from Canadian Entomologist, \'o!. LII, p. .32. 

 March, 1920 



