Parabates, Foersler, and Parnbatus, Thomson. 323 



solely on the basis of the iletermiimtion by Ilerr Si^mund 

 BiMUiis of a Nurth Anu'iican Rpeiiineii sent hiiu by 

 Mr. Moriey as " f)f)heU<>iiieiis ii\>.? " lint there is not the 

 slightest oviilonce that the cletcrniiiiation was concct, or tliat 

 IK-rr Hrauns had any more knowledge ot what Opltelluideus 

 is than has Mr. Morh-y or anyone else who has not seen 

 Ash mead's specimen oi'Johnsoni. 



Mr. Morley's key to the genera (lOlii, /. c. p. 101) makes 

 no provision at all for Parabates, Foerster, s. a. (i. e. nigri- 

 carpuf, Thomson, a species without an areolel), as it neither 

 ai^iees with his Faui^cns and Parahatus^ both of which are 

 stated to have an areolet, nor with I'arca which is the only 

 provision made for species with the areolet absent, but which 

 diiVers in other respects. 



]^Ir. Morley does not make it clear what species of Paulsens 

 lack the occi[)ital carina}. It is weak in even the type- 

 species, testaceus, and readily may not be associated with 

 the relative length of the median and submedian colls, as he 

 6u;i:j;e8ts, nor with any other strucluial character. 



To sum up, there seem to be a group of species which have 

 the nervnlus interstitial (m— cu and M4 + CU1 opposite) and a 

 group which do not, but of the former two or three species 

 liiive the nervulus sometimes a little beyond the apex of the 

 cell, and one species {franU, known from a single German 

 female, which may be abnormal) has it widely before the 

 apex of the median cell. On the other hand, specimens of 

 testaceus, the ty|)e-species of Paniscus, determined for me by 

 Professor Schmiedekuecht, show a varyin*]; distance between 

 the apex of the median cell and the nervulus, in one case the 

 distance Ijeing f[uite insignificant. Secondly, nit/ricarpus, 

 7)i////V/Y//(r, ^-/(j//eaceHj, tarsatus, i/aiisuatius, virt/atiis, latungitla, 

 cristaius, ixnd /r a 71 ki are stated by Schmiedekuecht (in giving 

 his generic description) to lack an occipital carina, while he 

 slates that all of the species of /'a?jijof/5 possess such a carina. 

 kSo far as I have observed, this distinction hoUls, and probably 

 is the best jtrimary character available for group-definition. 

 j\lorley, treating of additional species from other parts of the 

 world, finals species lacking the carina which, on the basis of 

 the venational character just discussed, he treats as J'atiiscus, 

 Finally, nigricarpus and johnsom* lack an areolet normally, 

 but at least also lutllieralct' in aberrant individuals. 



• In tbe citso of johnsoui probably not euough iudixidunls are luuiwu 

 to 1x3 sure what is noruiul. 



