379 
The specimen was seut to the Entomologist by Mr. Cockerell for 
name, and its apparent economic importance seems to justify this 
isolated description. 
The insect belongs to the subfamily Encyrtine and the genus Cer- 
chysius. This genus was erected by Westwood in 1832 (London and 
Edinburg Philosophical Magazine and Journal of Science, Vol. 1, July 
to December, 1832, p. 127), with very brief characters, for Encyrtus 
urocerus Dalman. The genus, however, is rejected by Mayr, who 
retains wrocerus in the genus Hneyrtus. Thomson makes use of Cer- 
chysius, with a somewhat indefinite diagnosis. In certain material 
collected on the island of St. Vincent by Mr. Herbert H. Smith, and 
sent to Prof. Riley, I have found three species which possess in part 
the characters of Dalman’s HL. wrocerus, and I have deemed it best to. 
use the generic name Cerchysius, especially as the terebral characters 
alone separate the forms from all other members of the true genus 
Eneyrtus. The characters which may be deemed of generic value, 
and in which the St. Vincent species as well as that from Jamaica agree, 
are as follows: 
Genus CERCHYSIUS Westwood. 
Female.—Head subsemiglobose; eyes rather widely separated; ocelli forming a 
right angled triangle; antenne inserted below middle of face; scape somewhat. 
widened below and reaching nearly or quite to vertex; flagellum long, slender, and 
cylindrical; club very slightly enlarged. Mesoscutum and scutellum somewhat flat- 
tened, either plane or together somewhat tectiform, the scuto-scutellar furrow form- 
ing the ridge in the tectiform species; scapule meeting at apex. Abdomen trian- 
gular or subtriangular; terebra exserted for at least haif the length of the abdomen 
‘proper. Legs rather longer than normal, resembling in this respect those of Lep- 
tomastix; middle tibial spur nearly or quite as long as first tarsal joint. Wings 
with short marginal and rather short postmarginal and stigmal veins, the latter 
subequal in length; anarrow, oblique, hairless streak extending from costal margin 
at stigmal vein to near base of wing on anal margin. 
Male.—Differs from female mainly in the funicle joints of the antenne which are 
plano-convex dorsally and slightly concave ventrally, subequal in length, each about 
three times as long as broad, and each furnished with two whorls of long hair. The 
spur of the middle tibia is rather longer than the corresponding first tarsal joint. 
CERCHYSIUS ICERY, sp. nov. 
Female.—Length (to tip of terebra) 1.8 mm; expanse 2.7 mm. ; antennal scape nearly 
cylindrical; flagellum unfortunately broken off in both antenne of the only specimen 
reared. Head and mesonotum very finely shagreened, the head with additional 
sparse fine punctures; lateral ocelli close to border of eyes, mesonotum glistening, 
with a few delicate sparse punctures particularly observable upon the scutellum; 
mesoscutellum with a delicate longitudinal impressed furrow from anterior apex to. 
near middle; mesopleura finely shagreened, glistening; abdomen smgoth, subtrian- 
gular; terebra as long as abdomen. Wing veins dark brown, marginal very 
short; fore-wings hyaline with a roundish dusky spot below stigma. General color 
honey-yellow, legs lighter than the body; especially front cox and middle tibie and 
tarsi; eyes black, ocelli dark, reddish brown; pronotum dusky near center; meso- 
Scutum dusky at central anterior margin, metanotum fuscous; third joint of ab- 
_domen above black; apical half of mesopleura black; hind tibie black except at tip. 
I; 
_ Described from one female specimen reared by Mr. T. D. A. Cockerell, 
at Kingston, Jamaica, from Icerya rose. 
b 
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