4 ENTOMOLOGICAL NEWS. [March 



the specimen is somewhat worn the woolly hair can often only 

 be seen on the mesoplenra or on the pteropleura beneath the 

 wing. Compsomyia has no woolly hair and the clorsum of 

 the thorax is distinctly striped. For this latter genus the 

 name C7*/7/.s'on//a, proposed by Desvoidy in 1830, should 

 have priority over Compsomyia. Of PoTlenia I have seen but 

 one Xorth American species, P. mdis Fabr. Of Chrysowi/io 

 I have two species, the common (\ m<i<-fUri<t Fabr. and an 

 undescribed species from California. 



MeNciithrhiclld may be distinguished by the following char- 

 acters : Elbow of fourth longitudinal vein not angular, but 

 forming a gentle curve much as Graphomyia, the apical cn>s 

 vein convex outwardly. The third longitudinal vein either 

 without spines or with a very few at the extreme base. Genae 

 naked. 



Cjinomia is a genus for which 1 find structural characters in 

 the male sex only. The arista is usually plumose for not more 

 than two- thirds! its length. The hypopygium is very prominent ; 

 the apex of the abdomen ends with a pair of large, slightly 

 curved, pointed processes, which are directed eephalad along 

 the ventral surface of the abdomen, and usually more or le^- 

 concealed by the fifth ventral segment ; this fifth ventral seg- 

 ment is split in the median line from its caudal border about 

 half way to its cephalic border. The female presents the 

 most striking likeness to female Calliphorse. Neither the 

 shape of the head, the extent of plumosity of the arista, nor 

 the chsetotaxy being invariably such as to enable the sepa- 

 ration to be made. It is true that an anterior iutraalar, 

 or a third posterior achrostical macroclueta, is rarely present, 

 but their presence, though rare, is a bar to making their ab- 

 sence a generic character. I have found myself obliged to 

 rely upon the rather more elongate form of CI/HOIIIHI and still 

 more upon the pure metallic color of the abdomen, which is 

 almost absolutely free from pollinose coating (except in ('. 

 <'/<>IK/<I/<I Hough), to distinguish female Cynomyise from < 'alii - 

 phorae. 



Of ('i/ii<>ini I know four species: nioi'litonnii \<, tniici-ictnid 

 Hough, cl<ni</<tt(t Hough and lihlu Hough. 



The genera ( 1 <t//i/>lior<t. LiH'il'm and I'lionnni. established b\ 



