OF WASHINGTON. 119 



Mr. Coquillett has kindly placed at my disposal a copy of his 

 field notes (written in 1892) referring to the larva and pupa of 

 this species. These notes read as follows : 



" No. 344. Larva resembles fig. 364, page 432, of Packard's ' Guide to 

 the Study of Insects.' 



" Body 12 segmented, olive-brown in the younger ones, becoming salmon- 

 brown in the older ones; head black, horizontal, depressed, about one- 

 half longer than wide, one-half as Avide as the first thoracic segment; the 

 latter is longer than any of the other body segments and is marked with 

 two black dorsal spots placed transversely; body widest at the third ab 

 dominal segment, last segment rounded behind, devoid of processes, fur 

 nished with a retractile proleg ; body sparsely clothed with microscopic 

 hairs each tipped with a minute translucent globule, mostly white but 

 sometimes tinged with yellow; the six thoracic legs black; length 

 1.50 mm. 



" Found several at Los Angeles, Cal. , February 12, 1892, on orange trees 

 infested with Aspidiotus anrantii and red spiders upon both of which they 

 appeared to feed. In pupating the larval skin is worked back until the 

 middle of the dorsum of the first five abdominal segments are exposed to 

 view, but the sides of the fourth and fifth segments and the ends of the 

 wing cases remain concealed by the old larval skin. 



" The pupa varies in color from pale yellow to deep orange-yellow, with 

 the first thoracic segment dark brown and marked with a whitish medio- 

 dorsal line; the pupa is covered with short hairs most abundant at the 

 front end and sides, and each tipped with a minute translucent globule. 

 Length 1.25 mm. 



" Two larvge pupated March ist, but the date of the issuing of the adults 

 was not noted." 



Mr. Schwarz, in this connection, stated that in the North 

 American fauna there are comparatively few Coccinellida} that 

 feed upon the armored scales (Diaspinas). Beside the genus Chi- 

 locorus and allied genera he knew only a few isolated genera of 

 other sub-families which have this habit. These are (i) the 

 various species of Pscudoweisea; (2) the two species of Cephal- 

 oscymnus, our eastern species, which feeds upon the maple scale 

 (Aspidiotus furfurus}, and the western species which has been 

 observed in Arizona preying upon an Aspidiotus on oak ; (3) the 

 species of Nipus, our smallest Coccinellidas, representing the sub 

 family Cranophorinae, which* appear, however, to be too rare to 

 have any economic importance ; (4) the species of the genus 

 Scymnillus. 



In reply to a question by Prof. Piper, Mr. Schwarz stated that, so 

 far as has been observed, all Coccinellids that feed upon soft-bodied 

 scales and aphids feed also upon " red spiders" (Tetranychzis). 



