174 [January, 



an extent, that it is only on tteir general style that one can place 

 any reliance." I find, however, one marking very constant, and by 

 which the two species can at once be differentiated, although authors 

 seem not to have observed this character, namely, tJie marking of the 

 anterior tihice. With respect to this, we could range the small AcantMa 

 (of the saltatoria group) in two lines : 



(1). The anterior border of the anterior tibife with an entire, very 

 distinct, black line, extending^ora the extreme base nearly to the apex : 

 A. pallipes, Fabr., A. vestita, Dougl., A. palustris, Dough, and A. are- 

 nicola, Scholz. 



(2) . The anterior tibias with the base and apex black, and in the 

 middle a rather short black, sometimes almost effaced, line (the black 

 marking interrupted before the base and apex by a testaceous interval) : 

 A. saltatoria, L., A. marginella, Fieb., A. stellata, Curt., A. melanoscela, 

 Fieb., and A. costalis, Sahib. 



CoEiscus versus Nabis. I do not know any reason why the name 

 Coriscus, given for this genus by Schrank in his " Fauna Boica," p. 46 

 (1801), cannot be employed (c. f. Stal, Enum. Hem., iii, 112). 

 Schrank' s description is certainly very short, but not shorter than that 

 of Fabricius, and from the descriptions of the two species {dauci = 

 brevipennis, Hahn, or apterus, Fabr., auct.,* and crassipes = ferus, 

 Linn. ?), it is also evident that this genus is identical with Nabis, 

 Latr., auct. (^Nabis, Latr., including also Prostemma') . 



CoEiscus (Nabis) Poweei, Saund. (Syn., p. 627, 6). According 

 to the examination of typical specimens, kindly sent to me by Mr. 

 Saunders, his JSfabis Poweri (Ent. Mo. Mag., xii, p. 250) is synonymous 

 with N. lineatus, Dahlb. (Yet. Akad. HandL, 1850, p. 228). Mr. 

 Saunders says, I. c, "It is also allied to N. Uneatus, Dahlb., a species 

 unknown to me ; but, according to Renter's description, the present 

 species appears to be distinct, especially in the narrow body of the $ ." 

 This narrow body of the female is, however, just characteristic of N. 

 Uneatus, and I also begin my description (Ofv., Vet. Akad. Forh., 

 1872, p. 69) by " elongatus," &c. Last autumn I found many speci- 

 mens of Uneatus in South Finland, of which the breadth of the abdomen 

 is little variable. The "hami copulationis" of the male in my specimens 

 are formed quite as in Poweri, Saund., and there is no doubt of the 

 identity of the two. 



* It seems to me not certain whether iJeduOTU« apUrv,s, Fabr., is a Coriicus or Coranus sub- 

 apterus, Do Geer. — O. M. R. 



