6 ENTOMOI.OGICAL NEWS [Jan., '19 



trum. In the true genus Lachnus the terminal segment is long 

 and tapering. 



Type of genus Lachnus parvus Wilson. 



Unilachnus parvus (Wilson). (Plate I, C, figs. 1-5). 



This species is included in this paper to illustrate the genus 

 and also to show the distinction between this and other species 

 which have a simple or once forked median vein. A complete 

 description will be found in Volume 41 of the Transactions of 

 the American Entomological Society, 191 5, p. 104. It occurs 

 on the needles of Pinus virginiana and P. rigida and the type 

 locality is the District of Columbia. 



Alate viviparous female. Body elongate and slender, antennae and 

 legs medium slender and thickly covered with long slender hairs. An- 

 tennae reaching to the third pair of coxae and the beak reaching to 

 the second pair; beak broad and blunt at the tip. The third antennal 

 segment bears about eight small sensoria, the fourth two and the fifth 

 a single large one near the distal end ; sixth with the usual large one 

 near the base of the antennal spur. Wings hyaline and the median 

 vein but a very indistinct single piece as indicated in the accompany- 

 ing figure. Nectaries small and more or less bell-shaped. The opening 

 rather large for the base. Cauda bluntly angled. 



Measurements. Length of body, 1.48 mm.; width, 0.6 mm. Length 

 of antennal segments, III, 0.32 mm.; IV, 0.154 mm.; V, 0.176 mm.; 

 VI, 0.154 mm. Length of wing, 2.5 mm. Length of hind tibia, 0.92 

 mm. Length of hind tarsus, 0.066 mm, and 0.3 mm. Length of beak, 

 0.49 mm. 



Lachnus juniperivora new species. (Plate II, F, figs. 1-5.) 



From material collected by W. L. McAtee on Plummers Island, 

 Maryland, July 5, 1914, on Juniperimts virginiana. Types in 

 writer's collection. 



Alate viviparous female. Specimens in balsam show no distinct 

 coloration of antennae and legs, these parts appearing to be light dusky 

 throughout. Third antennal segment approximately equal in length 

 to the fourth and fifth segments, fourth segment shorter than the fifth, 

 fifth and sixth about equal. Third segment with about six round sen- 

 soria of irregular size and not in alignment ; fourth segment with two 

 and fifth with two. Beak extending to the tip of the abdomen. The 

 antennae are quite distinct from those of the other species in this 

 genus and the nectaries are much broader at the base than those of 

 Lachnus tomentosus. The wing venation is shown in Plate II, F, 

 fig. I. Nectaries with a wide sloping base. Cauda rounded, anal plate 



