200 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Arribalzaga. Chaoborus was founded upon a larva which 

 lyichteustein gave the specific name antisepticns without hav- 

 ing- the least suspicion of its position in systematic zoology. 

 The larvae of the species of Chaoborus resemble each other 

 very closely and can only be differentiated on minute struc- 

 tural details. It is very doubtful that Lichtenstein's descrip- 

 tion and figure will make possible the specific identification of 

 his larva. Moreover, the European species of Chaoborus have 

 never been carefully studied from a systematic standpoint and 

 no proof exists that the Tipula crystalina of De Geer, which 

 Coquillett indicates as the type, is specifically identical with 

 Chaoborus antisepticus Ljchtenstein. In the case of Hetero- 

 nvcha Coquillett indicates Culex aestuans Wiedemann as the 

 type. Arribalzaga founded his genus upon a species which 

 he supposed to be new and which he called H. dolosa. This 

 species is most probably identical with Culex quinquefasciatus 

 Say. Wiedemann's Culex acsluans, as far as the reviewer is 

 aware, has never been identified with certainty. The short 

 description will apply to almost any plainly colored mosquito, 

 and it might easily belong to a genus other than Culex. Un- 

 til the types of Culex aestuans are studied in the light of 

 modern knowledge, its identity cannot be asserted. Wiede- 

 mann's species came from Brazil, that of Arribalzaga from the 

 Argentine. 



In conclusion, it should be stated that the value of Mr. 

 Coquillett's work, for determining the status of genera, is 

 greatly weakened by the fact that he limited himself to the 

 North American region. Manifestly anyone entering seriously 

 into the question of genera in a given group will have to in- 

 vestigate all the genera and their types, regardless of the part 

 of the earth they were described from. One of the excellent 

 features of the work is the accompanying index to the genera 

 and species, such as one misses very keenly in the Aldrich 

 Catalogue. 



DESCRIPTION OF A NEW CAPSID. 



BY OTTO HEIDEMANN. 



Capsus solani, new species (fig-. 3). 



Body elongate-oval, shining black, beset with pale, short hairs. 

 Head very fine, sparingly, punctate; a transverse, short depression 

 basally near inner side of each eye; the eyes large, about half as long 

 as the head, viewed from side. Antennae moderately long, the first 

 joint as long as the distance between the eyes in the male; second 

 joint gradually thickening a little towards the apical part, nearly as 



