1892.] ENTOMOLOGICAL NEWS. 79 



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

 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 egg 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 egg 

 parasites do much towards keeping down the Canna butterfly in 

 Jamaica. The Trichogramma 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. WittfiVM, 

 plainly visible. The egg 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 

 \]^ mm., color white, with a purple-gray tinge, especially aboVe. 

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

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

 the leaf, near the edge, which it bends by spinning a transv< 

 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 onlv a 

 few very short and inconspicuous hairs. Thesha]"- is rylindnral, 

 with a large head; different from P. zabulon as figured by Fren.-h. 

 On November 30! 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. f<|iiidi*tant, n> tw< t^s t.. tailing, 

 They have about twenty-four well-marked ribs. The larva: proved to be l.i,,|,mi; 

 tuids. but the imago was not reared. 



