594 MOSQUITOES OF NORTH AMERICA 



Arkansas, July 11, 1904 (H. S. Barber) ; Seott, Arkansas, October 6, 1908 (J. 

 K. Thibault, Jr.) ; Agricultural College, Mississippi, June 8, 1903 (G. W. 

 HeTrick) ; Tutwiler, Mississippi, August 2, 1904 (H. S. Barber) ; Jackson, 

 Mississippi, August 7, 1904 (H. S. Barber) ; Belzona, Mississippi, August 3, 

 1904 (H. S. Barber) ; Clarksdale, Mississippi, July 31, 1904 (H. S. Barber) ; 

 Yazoo City, Mississippi, August 5, 1904 (H. S. Barber) ; Johnson's Bayou, 

 Louisiana, July 36, 1906 (J. D. Mitchell) ; New Orleans, Louisiana, January 7. 

 1904 (S.G.Gill). 



In his early studies of the North American mosquitoes, Mr. D. W. Coquillett 

 identified this species as the Culex perturbans of Walker. Later, finding that 

 this identification was erroneous, he adopted the name Culex confinAs, assuming 

 it to be the Twniorhynchus confinnis of Arribdlzaga. StiU later he again 

 changed the name, adopting Cviex jamaicensis of Theobald. Our specira is 

 closdy related, but, we believe, specifically distinct from the insular form. 

 In fact, that type produces several local forms upon the mainland, which we 

 class as species, correctly, we think, with our present information. These species 

 are Psorophora texanum, P. floridense, P. toltecum, and P. colurribice. Con- 

 sequently we have felt obliged to make a fourth change in the name under which 

 this species is known. If this matter is kept in mind there will not be any di£B- 

 eulty experienced with the confusing synonymy. To show how confusing it is. 

 Dr. Pelt, misled by the numerous names, quotes the species twice, once as Culex 

 jamaicensis, then finding the name Culex confinis in one of Dr. Smith's publi- 

 cations, he supposed that this must be another species, which he quotes as un- 

 known to him, and adds Theobald's description compiled and translated by that 

 author from Arribalzaga's Latin description of specimens from the interior of 

 Argentina. It is entirely improbable that the Argentine species (confinnis) has 

 anything to do, even remotely, with any North American species. In fact, it re- 

 mains unknown today, and probably will so remain until someone procures 

 specimens from that remote locality. Mr. Theobald's subsequent identification 

 of Tceniorhynchus confinnis in specimens from Brazil and Trinidad is, we think, 

 incorrect, as he had before him specimens of Psorophora apicaiis (see p. 599). 

 We have cited this error of Dr. Pelt's at some length, as it shows to what extent 

 a matter of misidentification may lead. We could, in fact, pursue this chain of 

 error further, but it is scarcely necessary in this connection, beyond our citations 

 of the literature. 



PSOROPHORA INFINE (Dyar & Knab). 



Grabhamia confinis Coquillett (not Taeniorhynchus confi,nnis Arrlb&lzaga) , U. S. 



Dept. Agr., Bur. Ent., Tech. Ser. 11, 21, 1906. 

 Janthinosoma infine Dyar & Knab, Journ. N. Y. Ent. See, xiv, 181, 182, 1906. 

 Grabhamia infine Dyar, Proc. Ent See. Wash., viii, 16, 1906. 



Obiqinai. Description op Janthinosoma infine: 



The characters are normal for the genus. The antenna are greatly developed, the 

 anal segment short, the scales of the lateral comb of the eighth segment are joined 

 by a very weak chitinous band; the single scale has its apical spinule long. The 

 larvae were collected by Mr. Busck In Trinidad and St Domingo in rain water pools 

 and ditches, in a spring in a cave, in a slowly running spring, in a pot-hole in coral 

 Tock in the woods, In a pot-hole near the coast with rather salt water and in holes 

 made by wild pigs in the San Francisco Mts. of St Domingo. The specimens have 

 been named " Culex confinis," but confinis was described by Arribalzaga from the 

 Argentine and is referred by Blanchard to Tteniorhynchiis ; so we do not accept the 

 identification. 



The following is an abstract of the table : 



1. Antennae long and prominent, longer than the head 2 



2. Anal segment short, shorter than wide 4 



4. Pecten teeth of the air tube with four long sharp spines infine 



