112 ENTOMOLOGICAL NEWS. [June, 



of all others. The eggs of Danais archippus are also readily 

 found on the common silk or milk-weed (at the present time, 

 May loth). They are generally deposited on the underside of a 

 leaf, and usually only one on a plant, and if the leaves are care- 

 fully examined the eggs are easily seen. They are conical in 

 form and longitudinally ribbed, and between these run transverse 

 ones. They are white when laid, but gradually turn yellow, and 

 just before the young caterpillar is to emerge they change to a 

 steel-gray color. 



Another common species which is often found depositing its 

 eggs on clover is Colias philodice. The egg of this species is in 

 the shape of a spindle, and is attached to the plant by the point 

 or one end. They are pale yellow when first laid, but soon 

 change to a dark crimson, and are very interesting and pretty 

 objects. They are also longitudinally ribbed and crossed by 

 striae. It would be well if egg hunting were considered more 

 profitable by lepidopterists, as there is no doubt but what great 

 expertness could be acquired in this line, and in this way much 

 interesting knowledge would be gained, and when they were 

 carried through to the perfect state nice, bright, and faultless 

 specimens would be obtained. ED. 



o 



Pupa of Plaslocerus Schaumii. 



By FRANK E. BLAISDELL, M.D., Coronado, Cal. 



Length 13.4 mm. Form elongate, curved, non-pubescent. Color of 

 head, thorax and members, dirty white, with slight tinge of yellow; head 

 and thorax opaque; members translucent; abdominal segments fulvous; 

 central portions opaque; borders semi-transparent. Head deflexed and 

 sunken, rather deeply into prothorax; front full, with two slight depres- 

 sions separated by a median longitudinal ridge; denticulation of mandi- 

 bles visible. Antennae curved, thrown back so that middle of the con- 

 vexity touches corresponding portion of the side of prothorax; apices 

 near or resting against knees of anterior and posterior limbs, which ap- 

 proximate; pectinations directed inwards and backwards. Prothorax 

 quadrate, flexed upon mesothorax; anterior angles overlapping the eyes, 

 so as to cover the posterior half of their surface; posterior angles promi- 

 nent, strongly divergent; anterior border bearing two spines, each being 

 situated at the junction of the middle, with an outer third. Spines mod- 

 erately divergent, basal halves straight, stout; apical portions slender, 

 curved, chitinous; tips piceous. Mesonotal region depressed; elytral pads 

 striate, much narrower than those of wings, scarcely reaching base of 

 fourth abdominal segment. Metanotal region full, prominent; alar pads 



