26a 



duced Coccidse to any great extent ; while we are not likely to 

 have any suitable recent fauna parasites until after the advent of 

 the scales, since if by chance a Chalcid come to us over sea, it 

 would find nothing in which to propagate its species. 



Some of our imported scales, as will be explained in detail 

 when the species are discussed, are infested by parasites. For 

 example Mytilasjns citricoln, an injurious orange scale, is infested 

 both in Jamaica and Antigua. But so far as I have been able 

 to observe, the Jamaica Coccidae have few enemies, and to this, 

 in large part, is probably to be attributed their great abundance. 

 It is hoped, at some future time, to introduce some of the Coccid- 

 enemies that are likely to be useful, but of this more hereafter. 

 Prof. C. V. Riley, who is more competent than anyone else to 

 judge of such a matter writes (March 25, 1892): "I think it 

 would an easy matter for you to import the parasites of any par- 

 ticular scale which may be common to Jamaica and this country 

 and I will gladly help you when opportunity offers." 



How TO SEND Scale-insects by Post. 



Later on, it is proposed to treat with the various species 

 separately and in detail. In the meanwhile, the writer will be 

 very glad to receive Scale-insects from any part of Trinidad or the 

 West Indies. They are as a rule extremely easy to collect : all 

 that is necessary is to cut off some of the infested leaves or twigs, 

 and put them in an envelope, writing on the outside the name of 

 the plant, the estimated severity of the attack, the locality, and 

 the name of the collector. Such envelopes may be enclosed in a 

 larger one, and sent by post in the ordinary way. Species that 

 are soft, or liable to be damaged, can be sent inside a small joint 

 of bamboo, or any convenient receptacle. It is better not to put 

 the specimens in any air-tight box, especially if the leaves are 

 fresh, as they ai-e liable to rot. 



[Any specimens sent will be duly acknowledged and identi- 

 fied, and proper credit given in publication. They should 

 be addressed to Mr. T. D. A. Cockerell, Las Cruces, New 

 Mexico, U.S.A., or to Mr. F. W. Urich, Trinidad, British 

 West Indies.] 



DETERMINATION OF A TRINIDAD TICK. 



Some specimens of ticks collected at Mayaro, East Coast, 

 as well as some others taken from snakes from different districts 

 of the Island were submitted to Dr George Marx of Washington 

 who kindly determined them as Ambylomma mixtum, C. Koch. 



