12. HEMIPTERA. 



1. Cocci else 



by 

 ROBERT NEWSTEAD. 



With 31 figures in the text. 



This collection of Coccidae, made by Dr. YNGVE SJOSTEDT in Kilimandjaro, 

 East Africa, contains seven species representing six genera: six of the species being 

 new to science. Excluding the larvae, which it is practically impossible to count, 

 this collection consists of 192 individuals in the following proportions: Monophlebus 

 pallidus, n. sp., 1 J": M. Sjostedti, n. sp., 1 adult ?, 2 immature ??; Walkeriana 

 africana, n. sp., 49 ?? and numerous larvae; Stictococcus multispinosus, n. sp., 7 ?? 

 and a few young ??; Dactylopius coccineus, n. sp., 31 ??; Riper sia anomala, n. sp., 

 42 ??; Saissetia (Lecanium) oleae, BERN., 59 ??. The difficulty of obtaining satis- 

 factory preparations for microscopical study is, however, so great that many of the 

 specimens had to be sacrificed in order to determine the essential anatomical cha- 

 racters of these insects; so that in all cases the total number of individuals has been 

 reduced. 



The two species of Monophlebus, as will be seen on referring to the above list, 

 are poorly represented; but the material, though scanty, was sufficiently well pre- 

 served for diagnostic purposes, and the great size of the insects also afforded an 

 easier means of determining their salient characteristics than is usually presented by 

 this obscure group of insects. 



Hitherto nothing was apparently known of the Coccidae of this region, and 

 Dr. SJOSTEDT is, therefore, to be congratulated on the discovery of so large a pro- 

 portion of new species some of which are quite remarkable. In a collection so rich 

 in new material it is not possible to offer, in a comprehensive form, extensive ob- 

 servations on the Coccid fauna of this region as compared with that of other parts 

 of the African continent more especially so as our knowledge of the coccid fauna of 

 Africa is, broadly speaking, so little known at the present moment. It is interesting 

 to note, however, that, so far at least as the collection goes, there is an entire absence 



Sfootedts Kilimandjaro-JMeru Expedition. /'.' 1 



