MISCELLANEA. 139 



regarded as distinct species, but whicli Mr. Walsh looks upon as 

 merely two forms of one and tlie same insect. 



That the two forms are distinct enough is evident. Mr. "Walsh 

 calls attention particularly to nine points of difference. 



" 1. The fovea at the base of the scutel is twice or thrice as deep 

 in spongifica, and the longitudinal carina which bisects it is twice or 

 thrice as lofty." 



*' 2. In spongijica there are three deep and wide, transversely 

 corrugated, longitudinal striae or sutures in front of the scutel, one 

 central one extending nearly to the collare, but becoming narrower 

 as it approaches it, and two divergent lateral ones fading out as they 

 approach the humerus. In aciculata, it is only in particular lights 

 that traces of these striae are discoverable, and they do not extend 

 nearly so far forwards.'* 



" 3. In aciculata, on each side of the notum, beginning at the 

 collare and terminating suddenly about half way to the scutel, is an 

 almost invariably conspicuous, obtuse, glabrous carina, each parallel 

 with the other, and distant from the other about as far as the two 

 posterior ocelli are. In spongijica it is only in two or three 

 specimens and in certain lights, that faint traces of these two carinas 

 are discoverable." 



" 4. In aciculata, the mesonotum is very finely aciculate,or covered 

 with fine regularly parallel rugas before the scutel, except in two or 

 three specimens, where it is somewhat irregularly, but very finely 

 rugose. In spongijica it is very coarsely rugose. There is some 

 little variation in both these two forms, but comparing the most 

 coarsely sculptured aciculata with the most finely sculptured 

 spongijica, the rugosities are at least twice as coarse in the latter, i.e. 

 each rugosity is twice as wide." 



** 5. The sculpture of the rest of the thorax, and also of the head, 

 is about twice as coarse in spongijica as in aciculata." 



" 6. The body of aciculata is uniformly black, except that the 

 abdomen is sometimes piceous below. In two $ spongijica the 

 thorax is almost rust red, (as observed in a single $ C. q. coccinece 

 by Osten Sacken, Proc. Ent. Soc. Phila. J., p. 244,) and the abdomen 

 piceous red ; in another 9 the thorax is tinged with rust red and the 

 abdomen piceous ; and in the fourth ? the thorax is black, and the 

 abdomen is piceous red ; the remaining ? specimen being uniformly 

 black, as are also both 6 $. In the closely allied or identical species 

 g. inanisj however, one of my two (^ $ has a piceous red abdomen, 

 and all my 9 $ ? have a black thorax and a piceous red abdomen." 



