June, i 9 o6.] KNAB : GOELDI'S " Os MOSQUITOS NO PARA." 75 



The eggs obtained by the author from another species, Tcenio- 

 rhynchus fulvus, leads him to express doubt that it should be retained 

 in the same genus. He calls attention to the great dissimilarity of the 

 imago to those of the two first-mentioned species and proposes the 

 generic name Chrysoconops for this species. The eggs are short, very 

 broad at the middle, tapering to a blunt point at each end, almost 

 rhombic in shape. They are laid detached, in a double row which 

 soon becomes disarranged.* 



Very good figures are given of Mansonia titillans in the act of ovi- 

 position and of its eggs. The eggs are laid detached, in a double 

 mass. They are broadest at middle, tapering at both ends, but much 

 more slender than those of Tamiorhynchus fulvus. 



A plate is devoted to the eggs of Janthinosoma musica andy. lutzii 

 which are likewise laid singly. The surface sculpture consists of re- 

 cumbent spines. 



Trichoprosopon nivipes demands especial attention as it is the rep- 

 resentative of Theobald's subfamily Trichoprosopina of which the 

 larvae were heretofore unknown. The author obtained larvae from the 

 water between the leaves of Bromelias, at the base of banana leaves and 

 like situations. The appearance of the pale larvae is well shown in a 

 photographic picture and their general resemblance to the Sabethinae 

 quite apparent. The figure of the mandibles hardly conveys the correct 

 impression as only the slender strongly dentate portion is shown. The 

 mandibles remind one strongly of the Chironomidae, particularly when 

 seen endwise and the great thickness of the base is apparent. There is 

 reason to believe that in his notes on the young larva of Trichoprosopo/i, 

 accompanied by a figure of the breathing tube, the author had before 

 him the larva of Limatus durhami which is often found associated with 

 Trichoprosopon. The pupa of Trichoprosopon has very small terminal 

 paddles and the last and penultimate segments bear ample tufts of 24- 

 26 and 14-16 hairs respectively, while the other segments bear only 

 single hairs. 



Limatus durhami, in the imago as in the larva agrees with Tricho- 

 prosopon in habits. Imagos in confinement refused to suck blood and 

 laid no eggs. When fed honey they only lived from 2-8 days. The 

 larva is characterized by a very elongated abdomen and a small, almost 

 rectangular head. The antennae are very small. The breathing tube 



* Mr. D. W. Coquillett has recognized in Tceniorhynchus fuh'us a species of 

 Psorophora, so that Chrysoconops Goeldi becomes a synonym of Psorophora. 



