516 MK. R, E. TURNER ON [May 12, 



the Avidth of the head, strongly depressed anteriorly. Thorax and 

 median segment impimctate, subopaque ; the median segment 

 slender, half as long again as broad at the base, narrowed pos- 

 teriorly and oblique, with a median sulcus from the base not 

 reachino- the apex. First abdominal segment slender at the base, 

 with a longitudinal sulcus not reaching the apex, nearly as long 

 as the second segment ; the second and third segments strongly 

 transversely depressed at the base, The tarsi are without spines. 



Light ferruginous brown ; the head black ; the antennae (except 

 the two apical joints) castaneous. Wings hyaline, nervures pale 

 ferruginous. 



The second cubital cell is very small, only extending along the 

 transverse cubital nervure for less than one-third of its length, 

 the second recurrent nei-vure is received close to the base of the 

 cell ; the first cubital cell more than three times as long as the 

 third on the cubital nervure, receiving the first recurrent nervure 

 beyond two-thirds from the base. 



Length 5 mm. 



Hah. Cairns, Queensland {Turner) ; February. 



This is closely allied to some of the species of the Parapison 

 section in which the second cubital cell is wholly absent. The 

 strong convergence of the eyes towards the base of the clypeus is 

 remarkable. 



PisoN (Parapison) noctulum, sp. n. 



2 . Clypeus narrowly convex in the middle, nearly twice as 

 broad as long, the apical margin very . broadly rounded, clothed 

 with very short silvery pubescence. Antennae as long as the head, 

 thickened towards the apex, inserted a little further from each 

 other than from the eyes ; the second joint of the flagellum twice 

 as long as the first and half as long again as the third. Eyes 

 rather deeply emarginate, half as far again fi-om each other at the 

 base of the mandibles as on the vertex, separated on the vertex 

 by a distance about equal to the length of the two basal joints of 

 the flagellum. Head opaque, with a delicate longitudinal sulcus 

 below the anterior ocellus. Posterior ocelli half as far again from 

 each other as from the eyes, and as far from each other as from 

 the anterior ocellus. Thorax opaque, very minutely punctured ; 

 pronotum narrowed anteriorly and oblique, longer than in most 

 of the species of the genus, the posterior inargin as broad as the 

 head and on a level with the mesonotum. Median segment 

 shorter than the mesonotvim, narrowed and truncate posteriorly, 

 very delicately transversely striated, with a small smooth tri- 

 angular mark at the apex, fi-om the apex of the triangle a carina 

 reaches almost to the apex of the segment ; the surface of the 

 truncation is almost smooth, with a bi-oad median sulcus. Abdo- 

 men almost smooth, the apical margin of the segments depressed, 

 with sparse grey pubescence on the sides; the second segment 

 feebly transversely depressed at the base, equal in length to the 

 thu-d. The mesopleuras are opaque, very minutely punctured, 



