14 A Monograph of Culicidae. 



The differences being as below : — 



Abdomen with plumose lateral hairs only on the first 



3 segments ; head with plumose hairs Anopheles. 



Abdomen with plumose lateral hairs to the 6th 



segment ; head with small simple hairs only Coelodiazesis. 



In the genus Janthinosoma, of Arribalzaga, they place my 

 scliolasticus (a Culex, so near fatigans, I am not sure if it is 

 distinct), and my Orabhamia pygmaea and G. jamaicensis, insects 

 of totally different appearance and habits to the type of 

 Janthinosoma. 



They find that larval characters place Pneumaculex signifer, 

 Coquillett, in the genus Mansonia. Still more surprising is 

 the fact that from these larval characters, Haemagogus, Stego- 

 myia, Grdbhamia, Howardina, Culicelsa, Culicada, etc., and even 

 Dyar's own genus Pseudoculex sink under Aedes. 



The plates by Mr. F. Knab of the anal segments of the 

 larvae will be of value for future work. 



COQUILLETT'S CLASSIFICATION OF MOSQUITOES. 



It is pleasing to turn to this classification issued by the 

 U.S. Department of Agriculture (Tech. Se. 11, Bureau of 

 Entomology, 1906). The characters taken in this are varied, 

 and are those dealing with scales, venation and adult characters 

 generally. Much the same sub-families as are adopted in this 

 work are given, namely : Anophelinae,Megarhininae,Psorophorinae, 

 Culicinae, Deinoceratinae, Uranotaeniinae, Trichoprosoponinae, but 

 the Aedeomyinae and Haemagoginae are sunk under the Culicinae. 

 This, in view of the genus Mimomyia, is wise ; but, nevertheless, 

 it is advantageous to retain the sub-family Aedeomyinae, and 

 when our knowledge is more advanced we shall probably find it 

 convenient for identification to form a group of those forms 

 intermediate between true Culicinae and Aedeomyinae. 



In this classification Mr. Coquillett, whilst advancing the 

 subject generally, seems to have made a retrograde movement by 

 sinking such genera of Felt's as Culicada and Culicelsa under 

 Arribalzaga's elder otatus. Under this name he includes species 

 which are surely far apart, as spenceri, Theobald (a distinct 

 Grabhamia), impiger, Walker (a true Culex), and triseriatus, Say, 

 and many other diverse forms. 



