98 



closely related species on Chry soph y Hum from Montserrat, West Indies, 

 which we treat next, have convinced us that this Egyptian species 

 is in reality an Icerya and that therefore the new genus Crossotosoma 

 is a synonym. Mr. Douglas has seen only the adult female and the 

 newly hatched larvae and gives as his generic diagnosis the following: 

 "Antennae of eleven joints. Eyes not facetted, oval, produced in the 

 form of a subconical truncate tube. Rostrum present. Body sur- 

 rounded with a marginal fringe of long opaque processes. Anal ring 

 not present. Legs simple.'^ Later in his paper he say a: " In the larva 



Fig. 13. — Icerya cegyptiacum : a, newly hatched larva ; b, adult female form below ; c, same form 

 above— enlarged ; d, antenna of same— still more enlarged. (After Douglas.) 



with its six caudal setae, and in the adult 9 with eleven joints in 

 the antennae there are suggestions of the genus leerya, but the form 

 of the joints is different and most of the characters, notably the unique 

 structure of the eye, are divergent, as also they are variously from the 

 other genera of Monophloebidce of which Guerinia alone has similar sub- 

 pyriform joints in the antennae." 



All of the points of difference which Mr. Douglas has indicated be- 

 tween his new genus and Icerya we are able with one exception to 



