426 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.43. 



PARASPINIPHORA MACULATA Meigen. 



Not SO far as I know recorded for America. It is easily distin- 

 guished by the characters given in the table. Bred from snails. 



PARASPINIPHORA SCUTELLATA Brues. 



Plate 35, fig. 7. 



The type is in the Museum collection from Grenada, West Indies. 

 An easUy distinguished species. 



PARASPINIPHORA SPINOSISSIMA Strobl. 

 Plate 35, fig. 4. 



I found a specimen of this species in the collection along with 

 C. spinipes Coquillett. In addition to the character mentioned m 

 the table this species has two spines on the postero-dorsal surface 

 of fore tibia, one at the basal and one at the apical third, and 4-5 

 spines on each of the antero- and postero-dorsal surfaces of hind 

 tibia and 4-5 very long apical spines on the latter. It is a deep 

 black species, only the halteres, leg joints, and fore tarsi and tibiae 

 pale. The bristles are ver}^ strong; the wing has the costa to about 

 the middle and the first section from the humeral vein to the tip of 

 first vein more than one and one-half times as long as the remainder. 



Locality. — Plummers Island, Maryland (W. L. McAtee), 23-4-08. 



PARASPINIPHORA BERGENSTAMMI Mik. 

 Plate 35, fig. 6. 



There is evidently considerable confusion regarding this species. 

 Doctor Wood recorded a new species with two dorso-central thoracic 

 bristles under the name of domestica. He had taken quite a number of 

 females of typical lergenstammi with the usual two pairs of bristles, 

 but could not get the male. On the other hand he had taken 17 

 males of his domestica, but failed to find the female of it. Under 

 the impression that these bristles were an unfailing guide he described 

 the male as a new species. Some time afterwards, in identifying the 

 Phoridge sent me from Cambridge University Museum (England) , I 

 found a male and female taken in copulation which represented both 

 species, and on the strength of all the circumstances I sunk domestica 

 Wood as a synonym of hergenstammi Mik. In examining the material 

 in the United States National Museum collection I found a species 

 standing as comstocH, Aldrich, that is in my opinion typical her- 

 genstammi, and as I can not see any particular in which it varies from 

 Mik's species have sunk this name as a synonym of that species. 

 The position of the spines on the hind tibia in the type specimen of 

 comstocH Aldrich agree with Becker's description, which is, "one 



