202 



of the protomerite; endocyte of the protoraerite grayish brown in color 

 and rather dense, that of the deutomerite very dense and almost black; 

 nucleus very obscure or invisible in the living animal. All specimens 

 examined under 1000 /< were cephalonts. One gregarine, 1140^/, was 

 seen to throw off its epimerite. The epimerite was almost disconnected 

 when the gregarine was first observed and the protomerite was being 

 jerked from side to side vigorously. This jerking of the protomerite 

 continued for some time after the epimerite was completely thrown off. 



Sporont. General structure the same as that of the cephalont; 

 protomerite rounded anteriorly and rather globose ; deutomerite greatly 

 elongated, pointed and tapering posteriorly, its region of maximum 

 width just back of the junction with the protomerite; length of the pro- 

 tomerite 8 to 12 in the length of the deutomerite; width of the deuto- 

 merite about equal to the length of the protomerite. 



This gregarine was found in large numbers in each of the several 

 specimens of the host examined. It was not active, moving slowly if at 

 all. When treated with tap water the anterior third of the deuto- 

 merite became greatly enlarged, the epicyte and sarcocyte swelling away 

 from the endocyte. 



The observation of this gregarine and Gregarina grisea in two 

 species of Tenebrionid beetles closely related to Xylopinus sapcrdiodes 

 offers an explanation of the two types of gregarines figured by Craw- 

 ley, 1. c, as Gregarina xylopini. Figures 29 and 30 as taken from 

 Leidy 's MS. are of different gregarines, a fact recognized by Crawley. 

 Figure 30 represents a gregarine closely related to G. grisea^ while 

 figure 29 is apparently of a sporont of Stephanophora xopha. In the ab- 

 sence of other description the name Gregarina xylopini should be re- 

 stricted to figure 30, since it gives more characters than figure 29, which 

 is clearly of a gregarine not referable to the family Gregarinidae. 



4. Die Stephaniden Formosas. 



Von Dr. Günther En der lein, Stettin. 



eingeg. 26. April 1913. 



Die Stephanidenausbeute Sauter's aus Formosa im Deutschen 

 Entomologischen Museum in Dahlem enthält sechs noch unbekannte 

 Arten, die sich auf die Gattungen Parastcphanellu^, Diastephanus und 

 Foenatopus verteilen. Es zeigt sich auch an der Hand dieses Materials 

 wieder, daß die Größendifferenzen innerhalb einer Art bei den Stepha- 

 niden eine auffällige Größe erreichen, wie sie wohl kaum von einer 

 andern Insektenfamilie übertroffen wird. So ist das kleinste $ von 

 Foenatopus formosaiius 'Eiuderl. 12,4 mm, das größte 21V2iiim lang. 



