1892.] ENTOMOLOGICAL NEWS. 79 



the young larvae. Very many of the eggs never produce larvae, 

 but fall victims to a small hymenopterous parasite. This was 

 first observed by Mr. Bowrey, and is specially interesting, because 

 hitherto no parasite of C. ethlius seems to have been recorded. 

 I have not very carefully examined these &%g parasites, but they 

 are evidently of the genus Trichogramma, or closely allied thereto. 

 A specimen, compared with Riley's figure of T. pretiosa, has a 

 broader head, and the thorax is larger in proportion to the ab- 

 domen (my specimen is probably a male); the upper wings are 

 apparently more truncate, and the lower seem more slender. 

 With the Trichogramma I found a broken specimen of a different 

 Chalcid, with a broad abdomen about a third longer than wide, 

 a thorax much the same size and shape, wings stretching con- 

 siderably beyond 'the tip of the abdomen, submarginal vein 

 rather stout, marginal curved away from the costa, stigmal long, 

 with a distinct, though small knob, last pair of legs very long, 

 stretching beyond the tips of closed wings. These notes, al- 

 though so fragmentary, may serve for comparison with parasites 

 of C ethlius that may be found elsewhere. Certainly, these ^^<g 

 parasites do much towards keeping down the Canna butterfly in 

 Jamaica. The Trichogra?nma is the important one; whether the 

 other species is common remains to be seen. Eggs of C. ethlius 

 brought to me by Mr. Bowrey on Oct. 24, 1891, were laid singly 

 on a leaf of Canna.^ They are, as stated by Dr. Wittfield, 

 plainly visible. The ^^% is rounded, in section forming rather 

 more than half a circle, smooth, shiny, opaque, with fine im- 

 pressed microscopic punctures or lines, but no ribs. Diameter 

 154^ mm., color white, with a purple-gray tinge, especially above. 

 The egg-shell is white after the exclusion of the larva. The 

 lately-hatched larva is 4 mm. long, and rests on the underside of 

 the leaf, near the edge, which it bends by spinning a transverse 

 thread 4 mm. long. It is pale green (Scudder says pale yellowish 

 brown) with a black shiny head, which has a deep longitudinal 

 sulcus on the crown. Thoracic shield black; body with only a 

 few very short and inconspicuous hairs. The shape is cylindrical, 

 with a large head; different from P. zabulon as figured by French. 

 On November 3d the larva was 13 mm. long, cylindrical, looking 



- * On the same leaf I found the eggs of an unknown moth; these are smaller, and laid 

 in a group of eighty or more, very regularly in rows, equidistant, no two eggs touching, 

 They have about twenty-four well-marked ribs. The larvae proved to be looping Noc- 

 tuids. but the imago was not reared. 



