INSECUTOR INSCITI^ MENSTRUUS 117 



Besides the localities given in the monograph, the following 

 may be cited: Dona Maria, Chiapas, Mexico (D, L. Craw- 

 ford) ; Guatemala (R. Morales) ; Matapalo, Costa Rica, Jan- 

 uary 16, 1921 (A. Alfaro) ; Higuito, San Mateo, Costa Rica 

 (Pablo Schild) ; David, Panama, August 10, 1920 (J. Zetek) ; 

 Rupununi, British Guiana (K. S. Wise). 



The fortunate discovery of this long-sought male is due to 

 the indefatigability of Dr. Anastasio Alfaro of the Costa 

 Rican National Museum at San Jose. Dr. Alfaro met with 

 the species in some numbers, biting by day, and by sweeping 

 in the vicinity, secured the male. Twenty-two specimens were 

 thus taken at Matapalo, and accompanying them were only four 

 other mosquitoes, respectively, Culex declarator D. & K. 5 , 

 Acdcs taeniorhynchus Wied. 2 , Aedes cuneatus D. & K. $ , 

 too much rubbed to be sure, and Anopheles punctimacula D. 

 &K. 5. 



In the monograph we suggested that this mosquito was 

 probably predacious in the larval state, on account of its rarity, 

 and only single specimens being caught ; but if so, the Sabe- 

 fhoides nitidus must have consumed all of their prey in this 

 case, for they were in some numbers and no other Sabethid 

 was flying. The four mosquitoes caught with them are all 

 marsh-pool or ground-pool breeders, and could not have 

 formed the prey of a Sabethid larva. It occurs to us to make 

 the suggestion that this species is predacious on larvae occur- 

 ring in cocoanut husks, cacao shells and bamboo joints, such as 

 Haemagogus, etc. The specimens taken by Mr. Schild were 

 accompanied by Haemagogus iridicolor Dyar, and in Dr. 

 Alfaro's case the suggestion made above may explain the 

 absence of accompanying adults. 



Culex (Culex) chidesteri, new species. 



Described from two males. Proboscis with a pale whitish 

 band beyond the middle ; palpi exceeding the proboscis by more 

 than one length of the last Joint, black, the last two joints 

 hairy, a faint pale band on the long joint. Vestiture black, 

 as far as can be seen, both specimens being denuded ; in one 

 the tarsi are entirely black, in the other, very faint indica- 



